diff --git a/CHANGELOG.md b/CHANGELOG.md
index 671ba888..1bc4a70e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Bug fixes
 
+* `ChatBedrock()`'s default model (previously `"us.anthropic.claude-sonnet-4-6"`) is now `"us.anthropic.claude-sonnet-5"`, which mantle's `api="messages"` endpoint actually serves. Separately, the cross-region inference prefix (e.g. `"us."`) is now stripped from the model id sent in requests to `api="messages"` and `api="responses"`, since mantle rejects it even though Converse requires it. Previously, a mantle-only model with a cross-region prefix (e.g. `model="us.openai.gpt-5.4"`) would 404. (#411)
 * `.to_solver()` no longer corrupts the system prompt or the prior turns it reads out of Inspect AI's message state. The system prompt was being set to the `repr()` of the `ChatMessageSystem` object rather than its text, and message content arriving in Inspect AI's `str` form (rather than as a list of `Content`) was iterated one character at a time. (#407)
 * `ChatGoogle()` no longer raises `ValueError: Unknown content type: ContentThinking` on the second and later turns when `reasoning` is enabled; thinking content is now replayed to the model as thought parts, and the `thought_signature` on thought parts is preserved (previously only tool-call parts kept it). (#403)
 * `ChatOllama()` now distinguishes a remote endpoint it can't reach from a genuinely missing local install, and validates a supplied `model` against `/api/tags` at construction time instead of only when `model` is omitted. (#393)
diff --git a/chatlas/_provider_bedrock.py b/chatlas/_provider_bedrock.py
index 12fdd603..ddba8dec 100644
--- a/chatlas/_provider_bedrock.py
+++ b/chatlas/_provider_bedrock.py
@@ -26,7 +26,7 @@
 
 BedrockAPI = Literal["converse", "messages", "responses"]
 
-DEFAULT_MODEL = "us.anthropic.claude-sonnet-4-6"
+DEFAULT_MODEL = "us.anthropic.claude-sonnet-5"
 
 MANTLE_HOST = "https://bedrock-mantle.{region}.api.aws"
 
@@ -98,7 +98,7 @@ def ChatBedrock(
         A system prompt to set the behavior of the assistant.
     model
         The model to use for the chat. Defaults to
-        `"us.anthropic.claude-sonnet-4-6"`.
+        `"us.anthropic.claude-sonnet-5"`.
     api
         Which Bedrock API to use. The default, `None`, picks the API from
         `model`.
@@ -183,7 +183,9 @@ def ChatBedrock(
             )
         return Chat(
             provider=BedrockResponsesProvider(
-                model=model,
+                # Converse needs the cross-region inference prefix, but mantle
+                # rejects it on the model id in the request.
+                model=bedrock_strip_region_prefix(model),
                 aws_profile=aws_profile,
                 aws_region=region,
                 base_url=base_url,
@@ -215,7 +217,9 @@ def ChatBedrock(
 
     return Chat(
         provider=BedrockMessagesProvider(
-            model=model,
+            # Converse needs the cross-region inference prefix, but mantle
+            # rejects it on the model id in the request.
+            model=bedrock_strip_region_prefix(model),
             aws_profile=aws_profile,
             aws_region=region,
             base_url=base_url,
@@ -457,6 +461,19 @@ def bedrock_api_for_model(model: Optional[str]) -> BedrockAPI:
     return MODEL_APIS.get(CROSS_REGION_PREFIX.sub("", model), "converse")
 
 
+def bedrock_strip_region_prefix(model: str) -> str:
+    """
+    Strip a cross-region inference prefix (e.g. `"us."`) from `model`.
+
+    Converse needs the prefix on the model id it's sent, since that's how it
+    picks the inference profile. Mantle's Anthropic and OpenAI-compatible
+    endpoints have no such concept and 404 if the prefix is included, so it
+    must be stripped from the model id used in requests to `"messages"` and
+    `"responses"`.
+    """
+    return CROSS_REGION_PREFIX.sub("", model)
+
+
 def aws_endpoint_url(var: str, default: str) -> str:
     """An AWS service endpoint override env var, or `default` when unset."""
     url = os.environ.get(var, "")
diff --git a/chatlas/data/prices.json b/chatlas/data/prices.json
index 3578b77b..e5cb4e40 100644
--- a/chatlas/data/prices.json
+++ b/chatlas/data/prices.json
@@ -1,7 +1,7 @@
 {
   "schema_version": 1,
   "min_ellmer_version": "0.5.0",
-  "updated_at": "2026-08-24T06:42:01Z",
+  "updated_at": "2026-09-02T12:13:24Z",
   "data": [
     {
       "provider": "AWS/Bedrock",
@@ -61,6 +61,13 @@
       "output": 17.5,
       "cached_input": 0.546875
     },
+    {
+      "provider": "AWS/Bedrock",
+      "model": "amazon.nova-2-sonic-v1:0",
+      "variant": "",
+      "input": 0.33,
+      "output": 2.75
+    },
     {
       "provider": "AWS/Bedrock",
       "model": "amazon.nova-lite-v1:0",
@@ -82,6 +89,13 @@
       "input": 0.8,
       "output": 3.2
     },
+    {
+      "provider": "AWS/Bedrock",
+      "model": "amazon.nova-sonic-v1:0",
+      "variant": "",
+      "input": 0.06,
+      "output": 0.24
+    },
     {
       "provider": "AWS/Bedrock",
       "model": "amazon.titan-embed-g1-text-02",
@@ -219,6 +233,14 @@
       "output": 50,
       "cached_input": 1
     },
+    {
+      "provider": "AWS/Bedrock",
+      "model": "anthropic.claude-fable-5-1",
+      "variant": "",
+      "input": 10,
+      "output": 50,
+      "cached_input": 0.25
+    },
     {
       "provider": "AWS/Bedrock",
       "model": "anthropic.claude-haiku-4-5-20251001-v1:0",
@@ -1104,6 +1126,14 @@
       "output": 55,
       "cached_input": 1.1
     },
+    {
+      "provider": "AWS/Bedrock",
+      "model": "eu.anthropic.claude-fable-5-1",
+      "variant": "",
+      "input": 11,
+      "output": 55,
+      "cached_input": 0.275
+    },
     {
       "provider": "AWS/Bedrock",
       "model": "eu.anthropic.claude-haiku-4-5-20251001-v1:0",
@@ -1287,6 +1317,14 @@
       "output": 50,
       "cached_input": 1
     },
+    {
+      "provider": "AWS/Bedrock",
+      "model": "global.anthropic.claude-fable-5-1",
+      "variant": "",
+      "input": 10,
+      "output": 50,
+      "cached_input": 0.25
+    },
     {
       "provider": "AWS/Bedrock",
       "model": "global.anthropic.claude-haiku-4-5-20251001-v1:0",
@@ -1417,17 +1455,17 @@
       "provider": "AWS/Bedrock",
       "model": "global.openai.gpt-5.6-sol",
       "variant": "",
-      "input": 5,
-      "output": 30,
-      "cached_input": 0.5
+      "input": 4,
+      "output": 20,
+      "cached_input": 0.4
     },
     {
       "provider": "AWS/Bedrock",
       "model": "global.openai.gpt-5.6-sol",
       "variant": "above_272k_tokens",
-      "input": 10,
-      "output": 45,
-      "cached_input": 1
+      "input": 8,
+      "output": 30,
+      "cached_input": 0.8
     },
     {
       "provider": "AWS/Bedrock",
@@ -1862,6 +1900,14 @@
       "output": 16.5,
       "cached_input": 0.275
     },
+    {
+      "provider": "AWS/Bedrock",
+      "model": "openai.gpt-5.4",
+      "variant": "above_272k_tokens",
+      "input": 5.5,
+      "output": 24.75,
+      "cached_input": 0.55
+    },
     {
       "provider": "AWS/Bedrock",
       "model": "openai.gpt-5.5",
@@ -1870,6 +1916,22 @@
       "output": 33,
       "cached_input": 0.55
     },
+    {
+      "provider": "AWS/Bedrock",
+      "model": "openai.gpt-5.5",
+      "variant": "above_272k_tokens",
+      "input": 11,
+      "output": 49.5,
+      "cached_input": 1.1
+    },
+    {
+      "provider": "AWS/Bedrock",
+      "model": "openai.gpt-5.6-cyber",
+      "variant": "",
+      "input": 13.75,
+      "output": 82.5,
+      "cached_input": 1.375
+    },
     {
       "provider": "AWS/Bedrock",
       "model": "openai.gpt-5.6-luna",
@@ -2661,6 +2723,14 @@
       "output": 55,
       "cached_input": 1.1
     },
+    {
+      "provider": "AWS/Bedrock",
+      "model": "us.anthropic.claude-fable-5-1",
+      "variant": "",
+      "input": 11,
+      "output": 55,
+      "cached_input": 0.275
+    },
     {
       "provider": "AWS/Bedrock",
       "model": "us.anthropic.claude-haiku-4-5-20251001-v1:0",
@@ -2912,17 +2982,17 @@
       "provider": "AWS/Bedrock",
       "model": "us.openai.gpt-5.6-sol",
       "variant": "",
-      "input": 5.5,
-      "output": 33,
-      "cached_input": 0.55
+      "input": 4.4,
+      "output": 22,
+      "cached_input": 0.44
     },
     {
       "provider": "AWS/Bedrock",
       "model": "us.openai.gpt-5.6-sol",
       "variant": "above_272k_tokens",
-      "input": 11,
-      "output": 49.5,
-      "cached_input": 1.1
+      "input": 8.8,
+      "output": 33,
+      "cached_input": 0.88
     },
     {
       "provider": "AWS/Bedrock",
@@ -3082,6 +3152,14 @@
       "output": 50,
       "cached_input": 1
     },
+    {
+      "provider": "Anthropic",
+      "model": "claude-fable-5-1",
+      "variant": "",
+      "input": 10,
+      "output": 50,
+      "cached_input": 0.25
+    },
     {
       "provider": "Anthropic",
       "model": "claude-haiku-4-5",
@@ -3494,13 +3572,21 @@
       "output": 49.5,
       "cached_input": 1.1
     },
+    {
+      "provider": "Azure/OpenAI",
+      "model": "eu/gpt-5.6",
+      "variant": "above_272k_tokens_priority",
+      "input": 22,
+      "output": 99,
+      "cached_input": 2.2
+    },
     {
       "provider": "Azure/OpenAI",
       "model": "eu/gpt-5.6",
       "variant": "priority",
-      "input": 13.75,
-      "output": 82.5,
-      "cached_input": 1.375
+      "input": 11,
+      "output": 66,
+      "cached_input": 1.1
     },
     {
       "provider": "Azure/OpenAI",
@@ -3518,13 +3604,21 @@
       "output": 1.98,
       "cached_input": 0.044
     },
+    {
+      "provider": "Azure/OpenAI",
+      "model": "eu/gpt-5.6-luna",
+      "variant": "above_272k_tokens_priority",
+      "input": 0.88,
+      "output": 3.96,
+      "cached_input": 0.088
+    },
     {
       "provider": "Azure/OpenAI",
       "model": "eu/gpt-5.6-luna",
       "variant": "priority",
-      "input": 0.55,
-      "output": 3.3,
-      "cached_input": 0.055
+      "input": 0.44,
+      "output": 2.64,
+      "cached_input": 0.044
     },
     {
       "provider": "Azure/OpenAI",
@@ -3542,13 +3636,21 @@
       "output": 49.5,
       "cached_input": 1.1
     },
+    {
+      "provider": "Azure/OpenAI",
+      "model": "eu/gpt-5.6-sol",
+      "variant": "above_272k_tokens_priority",
+      "input": 22,
+      "output": 99,
+      "cached_input": 2.2
+    },
     {
       "provider": "Azure/OpenAI",
       "model": "eu/gpt-5.6-sol",
       "variant": "priority",
-      "input": 13.75,
-      "output": 82.5,
-      "cached_input": 1.375
+      "input": 11,
+      "output": 66,
+      "cached_input": 1.1
     },
     {
       "provider": "Azure/OpenAI",
@@ -3566,13 +3668,21 @@
       "output": 19.8,
       "cached_input": 0.44
     },
+    {
+      "provider": "Azure/OpenAI",
+      "model": "eu/gpt-5.6-terra",
+      "variant": "above_272k_tokens_priority",
+      "input": 8.8,
+      "output": 39.6,
+      "cached_input": 0.88
+    },
     {
       "provider": "Azure/OpenAI",
       "model": "eu/gpt-5.6-terra",
       "variant": "priority",
-      "input": 5.5,
-      "output": 33,
-      "cached_input": 0.55
+      "input": 4.4,
+      "output": 26.4,
+      "cached_input": 0.44
     },
     {
       "provider": "Azure/OpenAI",
@@ -5173,13 +5283,21 @@
       "output": 49.5,
       "cached_input": 1.1
     },
+    {
+      "provider": "Azure/OpenAI",
+      "model": "us/gpt-5.6",
+      "variant": "above_272k_tokens_priority",
+      "input": 22,
+      "output": 99,
+      "cached_input": 2.2
+    },
     {
       "provider": "Azure/OpenAI",
       "model": "us/gpt-5.6",
       "variant": "priority",
-      "input": 13.75,
-      "output": 82.5,
-      "cached_input": 1.375
+      "input": 11,
+      "output": 66,
+      "cached_input": 1.1
     },
     {
       "provider": "Azure/OpenAI",
@@ -5197,13 +5315,21 @@
       "output": 1.98,
       "cached_input": 0.044
     },
+    {
+      "provider": "Azure/OpenAI",
+      "model": "us/gpt-5.6-luna",
+      "variant": "above_272k_tokens_priority",
+      "input": 0.88,
+      "output": 3.96,
+      "cached_input": 0.088
+    },
     {
       "provider": "Azure/OpenAI",
       "model": "us/gpt-5.6-luna",
       "variant": "priority",
-      "input": 0.55,
-      "output": 3.3,
-      "cached_input": 0.055
+      "input": 0.44,
+      "output": 2.64,
+      "cached_input": 0.044
     },
     {
       "provider": "Azure/OpenAI",
@@ -5221,13 +5347,21 @@
       "output": 49.5,
       "cached_input": 1.1
     },
+    {
+      "provider": "Azure/OpenAI",
+      "model": "us/gpt-5.6-sol",
+      "variant": "above_272k_tokens_priority",
+      "input": 22,
+      "output": 99,
+      "cached_input": 2.2
+    },
     {
       "provider": "Azure/OpenAI",
       "model": "us/gpt-5.6-sol",
       "variant": "priority",
-      "input": 13.75,
-      "output": 82.5,
-      "cached_input": 1.375
+      "input": 11,
+      "output": 66,
+      "cached_input": 1.1
     },
     {
       "provider": "Azure/OpenAI",
@@ -5245,13 +5379,21 @@
       "output": 19.8,
       "cached_input": 0.44
     },
+    {
+      "provider": "Azure/OpenAI",
+      "model": "us/gpt-5.6-terra",
+      "variant": "above_272k_tokens_priority",
+      "input": 8.8,
+      "output": 39.6,
+      "cached_input": 0.88
+    },
     {
       "provider": "Azure/OpenAI",
       "model": "us/gpt-5.6-terra",
       "variant": "priority",
-      "input": 5.5,
-      "output": 33,
-      "cached_input": 0.55
+      "input": 4.4,
+      "output": 26.4,
+      "cached_input": 0.44
     },
     {
       "provider": "Azure/OpenAI",
@@ -5418,7 +5560,7 @@
       "variant": "",
       "input": 0.1,
       "output": 0.4,
-      "cached_input": 0.025
+      "cached_input": 0.01
     },
     {
       "provider": "Google/Gemini",
@@ -5432,22 +5574,22 @@
       "provider": "Google/Gemini",
       "model": "gemini-2.5-flash-native-audio-latest",
       "variant": "",
-      "input": 0.3,
-      "output": 2.5
+      "input": 0.5,
+      "output": 2
     },
     {
       "provider": "Google/Gemini",
       "model": "gemini-2.5-flash-native-audio-preview-09-2025",
       "variant": "",
-      "input": 0.3,
-      "output": 2.5
+      "input": 0.5,
+      "output": 2
     },
     {
       "provider": "Google/Gemini",
       "model": "gemini-2.5-flash-native-audio-preview-12-2025",
       "variant": "",
-      "input": 0.3,
-      "output": 2.5
+      "input": 0.5,
+      "output": 2
     },
     {
       "provider": "Google/Gemini",
@@ -5455,14 +5597,14 @@
       "variant": "",
       "input": 0.3,
       "output": 2.5,
-      "cached_input": 0.075
+      "cached_input": 0.03
     },
     {
       "provider": "Google/Gemini",
       "model": "gemini-2.5-flash-preview-tts",
       "variant": "",
-      "input": 0.3,
-      "output": 2.5
+      "input": 0.5,
+      "output": 10
     },
     {
       "provider": "Google/Gemini",
@@ -5498,18 +5640,10 @@
       "provider": "Google/Gemini",
       "model": "gemini-2.5-pro-preview-tts",
       "variant": "",
-      "input": 1.25,
-      "output": 10,
+      "input": 1,
+      "output": 20,
       "cached_input": 0.125
     },
-    {
-      "provider": "Google/Gemini",
-      "model": "gemini-2.5-pro-preview-tts",
-      "variant": "above_200k_tokens",
-      "input": 2.5,
-      "output": 15,
-      "cached_input": 0.25
-    },
     {
       "provider": "Google/Gemini",
       "model": "gemini-3-flash-preview",
@@ -5835,6 +5969,20 @@
       "input": 3.5,
       "output": 21
     },
+    {
+      "provider": "Google/Gemini",
+      "model": "gemini-3.5-transcribe",
+      "variant": "",
+      "input": 2,
+      "output": 12
+    },
+    {
+      "provider": "Google/Gemini",
+      "model": "gemini-3.5-transcribe-live",
+      "variant": "",
+      "input": 3.5,
+      "output": 21
+    },
     {
       "provider": "Google/Gemini",
       "model": "gemini-3.6-flash",
@@ -5960,10 +6108,17 @@
       "provider": "Google/Gemini",
       "model": "gemini-live-2.5-flash-preview-native-audio-09-2025",
       "variant": "",
-      "input": 0.3,
+      "input": 0.5,
       "output": 2,
       "cached_input": 0.075
     },
+    {
+      "provider": "Google/Gemini",
+      "model": "gemini-omni-1.1-flash",
+      "variant": "",
+      "input": 1.5,
+      "output": 9
+    },
     {
       "provider": "Google/Gemini",
       "model": "gemini-omni-flash-preview",
@@ -6017,6 +6172,20 @@
       "input": 2,
       "output": 10
     },
+    {
+      "provider": "Google/Gemini",
+      "model": "nano-banana-pro-preview",
+      "variant": "",
+      "input": 2,
+      "output": 12
+    },
+    {
+      "provider": "Google/Gemini",
+      "model": "nano-banana-pro-preview",
+      "variant": "batches",
+      "input": 1,
+      "output": 6
+    },
     {
       "provider": "Google/Vertex",
       "model": "deep-research-pro-preview-12-2025",
@@ -6107,7 +6276,7 @@
       "variant": "",
       "input": 0.1,
       "output": 0.4,
-      "cached_input": 0.025
+      "cached_input": 0.01
     },
     {
       "provider": "Google/Vertex",
@@ -6123,7 +6292,7 @@
       "variant": "",
       "input": 0.3,
       "output": 2.5,
-      "cached_input": 0.075
+      "cached_input": 0.03
     },
     {
       "provider": "Google/Vertex",
@@ -6145,18 +6314,10 @@
       "provider": "Google/Vertex",
       "model": "gemini-2.5-pro-preview-tts",
       "variant": "",
-      "input": 1.25,
-      "output": 10,
+      "input": 1,
+      "output": 20,
       "cached_input": 0.125
     },
-    {
-      "provider": "Google/Vertex",
-      "model": "gemini-2.5-pro-preview-tts",
-      "variant": "above_200k_tokens",
-      "input": 2.5,
-      "output": 15,
-      "cached_input": 0.25
-    },
     {
       "provider": "Google/Vertex",
       "model": "gemini-3-flash-preview",
@@ -6422,7 +6583,7 @@
       "variant": "flex",
       "input": 0.15,
       "output": 1.25,
-      "cached_input": 0.02
+      "cached_input": 0.015
     },
     {
       "provider": "Google/Vertex",
@@ -6494,11 +6655,18 @@
       "output": 6.75,
       "cached_input": 0.135
     },
+    {
+      "provider": "Google/Vertex",
+      "model": "gemini-live-2.5-flash-native-audio",
+      "variant": "",
+      "input": 0.5,
+      "output": 2
+    },
     {
       "provider": "Google/Vertex",
       "model": "gemini-live-2.5-flash-preview-native-audio-09-2025",
       "variant": "",
-      "input": 0.3,
+      "input": 0.5,
       "output": 2,
       "cached_input": 0.075
     },
@@ -6656,7 +6824,7 @@
       "variant": "flex",
       "input": 0.15,
       "output": 1.25,
-      "cached_input": 0.02
+      "cached_input": 0.015
     },
     {
       "provider": "Google/Vertex",
@@ -6768,6 +6936,13 @@
       "input": 0.6,
       "output": 3
     },
+    {
+      "provider": "Groq",
+      "model": "qwen/qwen3.8-27b",
+      "variant": "",
+      "input": 0.8,
+      "output": 4
+    },
     {
       "provider": "Mistral",
       "model": "codestral-2405",
@@ -6780,26 +6955,30 @@
       "model": "codestral-2508",
       "variant": "",
       "input": 0.3,
-      "output": 0.9
+      "output": 0.9,
+      "cached_input": 0.03
     },
     {
       "provider": "Mistral",
       "model": "codestral-embed",
       "variant": "",
-      "input": 0.15
+      "input": 0.15,
+      "cached_input": 0.015
     },
     {
       "provider": "Mistral",
       "model": "codestral-embed-2505",
       "variant": "",
-      "input": 0.15
+      "input": 0.15,
+      "cached_input": 0.015
     },
     {
       "provider": "Mistral",
       "model": "codestral-latest",
       "variant": "",
       "input": 0.3,
-      "output": 0.9
+      "output": 0.9,
+      "cached_input": 0.03
     },
     {
       "provider": "Mistral",
@@ -6923,38 +7102,94 @@
     },
     {
       "provider": "Mistral",
-      "model": "ministral-3-14b-2512",
+      "model": "ministral-14b-2512",
       "variant": "",
       "input": 0.2,
       "output": 0.2
     },
+    {
+      "provider": "Mistral",
+      "model": "ministral-14b-latest",
+      "variant": "",
+      "input": 0.2,
+      "output": 0.2
+    },
+    {
+      "provider": "Mistral",
+      "model": "ministral-3-14b-2512",
+      "variant": "",
+      "input": 0.2,
+      "output": 0.2,
+      "cached_input": 0.02
+    },
     {
       "provider": "Mistral",
       "model": "ministral-3-3b-2512",
       "variant": "",
       "input": 0.1,
-      "output": 0.1
+      "output": 0.1,
+      "cached_input": 0.01
     },
     {
       "provider": "Mistral",
       "model": "ministral-3-8b-2512",
       "variant": "",
       "input": 0.15,
-      "output": 0.15
+      "output": 0.15,
+      "cached_input": 0.015
+    },
+    {
+      "provider": "Mistral",
+      "model": "ministral-3b-2512",
+      "variant": "",
+      "input": 0.1,
+      "output": 0.1
+    },
+    {
+      "provider": "Mistral",
+      "model": "ministral-3b-latest",
+      "variant": "",
+      "input": 0.1,
+      "output": 0.1
     },
     {
       "provider": "Mistral",
       "model": "ministral-8b-2512",
       "variant": "",
       "input": 0.15,
-      "output": 0.15
+      "output": 0.15,
+      "cached_input": 0.015
     },
     {
       "provider": "Mistral",
       "model": "ministral-8b-latest",
       "variant": "",
       "input": 0.15,
-      "output": 0.15
+      "output": 0.15,
+      "cached_input": 0.015
+    },
+    {
+      "provider": "Mistral",
+      "model": "mistral-code-agent-latest",
+      "variant": "",
+      "input": 0.4,
+      "output": 2
+    },
+    {
+      "provider": "Mistral",
+      "model": "mistral-code-fim-latest",
+      "variant": "",
+      "input": 0.3,
+      "output": 0.9,
+      "cached_input": 0.03
+    },
+    {
+      "provider": "Mistral",
+      "model": "mistral-code-latest",
+      "variant": "",
+      "input": 0.3,
+      "output": 0.9,
+      "cached_input": 0.03
     },
     {
       "provider": "Mistral",
@@ -6962,6 +7197,12 @@
       "variant": "",
       "input": 0.1
     },
+    {
+      "provider": "Mistral",
+      "model": "mistral-embed-2312",
+      "variant": "",
+      "input": 0.1
+    },
     {
       "provider": "Mistral",
       "model": "mistral-large-2402",
@@ -6988,21 +7229,24 @@
       "model": "mistral-large-2512",
       "variant": "",
       "input": 0.5,
-      "output": 1.5
+      "output": 1.5,
+      "cached_input": 0.05
     },
     {
       "provider": "Mistral",
       "model": "mistral-large-3",
       "variant": "",
       "input": 0.5,
-      "output": 1.5
+      "output": 1.5,
+      "cached_input": 0.05
     },
     {
       "provider": "Mistral",
       "model": "mistral-large-latest",
       "variant": "",
       "input": 0.5,
-      "output": 1.5
+      "output": 1.5,
+      "cached_input": 0.05
     },
     {
       "provider": "Mistral",
@@ -7037,6 +7281,14 @@
       "model": "mistral-medium-2604",
       "variant": "",
       "input": 1.5,
+      "output": 7.5,
+      "cached_input": 0.15
+    },
+    {
+      "provider": "Mistral",
+      "model": "mistral-medium-3",
+      "variant": "",
+      "input": 1.5,
       "output": 7.5
     },
     {
@@ -7051,14 +7303,24 @@
       "model": "mistral-medium-3-5",
       "variant": "",
       "input": 1.5,
-      "output": 7.5
+      "output": 7.5,
+      "cached_input": 0.15
+    },
+    {
+      "provider": "Mistral",
+      "model": "mistral-medium-3.5",
+      "variant": "",
+      "input": 1.5,
+      "output": 7.5,
+      "cached_input": 0.15
     },
     {
       "provider": "Mistral",
       "model": "mistral-medium-latest",
       "variant": "",
       "input": 1.5,
-      "output": 7.5
+      "output": 7.5,
+      "cached_input": 0.15
     },
     {
       "provider": "Mistral",
@@ -7072,7 +7334,8 @@
       "model": "mistral-small-2603",
       "variant": "",
       "input": 0.15,
-      "output": 0.6
+      "output": 0.6,
+      "cached_input": 0.015
     },
     {
       "provider": "Mistral",
@@ -7086,7 +7349,8 @@
       "model": "mistral-small-latest",
       "variant": "",
       "input": 0.15,
-      "output": 0.6
+      "output": 0.6,
+      "cached_input": 0.015
     },
     {
       "provider": "Mistral",
@@ -7095,6 +7359,30 @@
       "input": 0.25,
       "output": 0.25
     },
+    {
+      "provider": "Mistral",
+      "model": "mistral-vibe-cli-fast",
+      "variant": "",
+      "input": 0.15,
+      "output": 0.6,
+      "cached_input": 0.015
+    },
+    {
+      "provider": "Mistral",
+      "model": "mistral-vibe-cli-latest",
+      "variant": "",
+      "input": 1.5,
+      "output": 7.5,
+      "cached_input": 0.15
+    },
+    {
+      "provider": "Mistral",
+      "model": "mistral-vibe-cli-with-tools",
+      "variant": "",
+      "input": 1.5,
+      "output": 7.5,
+      "cached_input": 0.15
+    },
     {
       "provider": "Mistral",
       "model": "open-codestral-mamba",
@@ -7158,6 +7446,20 @@
       "input": 2,
       "output": 6
     },
+    {
+      "provider": "Mistral",
+      "model": "voxtral-small-2507",
+      "variant": "",
+      "input": 0.1,
+      "output": 0.4
+    },
+    {
+      "provider": "Mistral",
+      "model": "voxtral-small-latest",
+      "variant": "",
+      "input": 0.1,
+      "output": 0.4
+    },
     {
       "provider": "Mistral",
       "model": "zai-glm-5-2",
diff --git a/chatlas/types/anthropic/_submit.py b/chatlas/types/anthropic/_submit.py
index 5931a0c3..af13d8b7 100644
--- a/chatlas/types/anthropic/_submit.py
+++ b/chatlas/types/anthropic/_submit.py
@@ -46,6 +46,8 @@ class SubmitInputArgs(TypedDict, total=False):
     messages: Iterable[anthropic.types.message_param.MessageParam]
     model: Union[
         Literal[
+            "claude-fable-5-1",
+            "claude-mythos-5-1",
             "claude-sonnet-5",
             "claude-fable-5",
             "claude-mythos-5",
diff --git a/tests/test_provider_bedrock_converse.py b/tests/test_provider_bedrock_converse.py
index 4d5e0f71..f17435d6 100644
--- a/tests/test_provider_bedrock_converse.py
+++ b/tests/test_provider_bedrock_converse.py
@@ -1044,7 +1044,7 @@ def test_default_model_is_ellmers_claude_sonnet(self):
 
         chat = ChatBedrock(aws_region="us-east-1")
 
-        assert chat.provider.model == "us.anthropic.claude-sonnet-4-6"
+        assert chat.provider.model == "us.anthropic.claude-sonnet-5"
         assert isinstance(chat.provider, BedrockConverseProvider)
 
     def test_claude_routes_to_converse_not_mantle(self):
diff --git a/tests/test_provider_bedrock_mantle.py b/tests/test_provider_bedrock_mantle.py
index 63545ded..ac5c1d7f 100644
--- a/tests/test_provider_bedrock_mantle.py
+++ b/tests/test_provider_bedrock_mantle.py
@@ -120,6 +120,12 @@ def test_client_points_at_the_openai_v1_mantle_path(self):
             "https://bedrock-mantle.us-west-2.api.aws/openai/v1"
         )
 
+    def test_cross_region_prefix_is_stripped_from_the_responses_model(self):
+        # Converse needs the prefix, but mantle 404s if it's included in the
+        # request's model id.
+        chat = ChatBedrock(model="us.openai.gpt-5.4", aws_region="us-east-1")
+        assert chat.provider.model == "openai.gpt-5.4"
+
     def test_list_models_uses_the_v1_mantle_path(self):
         # Mantle serves model listings at /v1/models; /openai/v1/models 404s,
         # so list_models() must hit a different base URL than chat requests do.
@@ -204,6 +210,23 @@ def test_client_points_at_the_anthropic_mantle_path(self):
             "https://bedrock-mantle.us-east-1.api.aws/anthropic"
         )
 
+    def test_default_model_is_served_by_mantle(self):
+        # The default model carries a cross-region prefix (needed for
+        # Converse), but it must still resolve to a model mantle's Anthropic
+        # endpoint actually serves when `api="messages"` is requested
+        # explicitly without a model.
+        from chatlas._provider_bedrock import DEFAULT_MODEL
+
+        chat = ChatBedrock(api="messages", aws_region="us-east-1")
+        assert chat.provider.model == "anthropic.claude-sonnet-5"
+        assert DEFAULT_MODEL == "us.anthropic.claude-sonnet-5"
+
+    def test_cross_region_prefix_is_stripped_from_the_messages_model(self):
+        # Converse needs the prefix, but mantle 404s if it's included in the
+        # request's model id.
+        chat = ChatBedrock(model="us.anthropic.claude-mythos-5", aws_region="us-east-1")
+        assert chat.provider.model == "anthropic.claude-mythos-5"
+
     def test_cache_auto_becomes_a_5m_ttl(self):
         chat = ChatBedrock(
             model="anthropic.claude-haiku-4-5", api="messages", aws_region="us-east-1"