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feat(claude): add claude-fable-5-1 and bump Claude Code fingerprint to 2.1.251 #5405

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feat(claude): add claude-fable-5-1 and bump Claude Code fingerprint to 2.1.251 #5405

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31 changes: 30 additions & 1 deletion internal/registry/models/models.json
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Original file line number Diff line number Diff line change
Expand Up @@ -249,6 +249,36 @@
"text"
]
},
{
"id": "claude-fable-5-1",
"object": "model",
"created": 1788393600,
"owned_by": "anthropic",
"type": "claude",
"display_name": "Claude Fable 5.1",
"description": "Anthropic's most capable widely released model, for the most demanding reasoning and long-horizon agentic work",
"context_length": 1000000,
"max_completion_tokens": 128000,
"thinking": {
"min": 1024,
"max": 128000,
"zero_allowed": true,
"levels": [
"low",
"medium",
"high",
"xhigh",
"max"
]
},
"supportedInputModalities": [
"text",
"image"
],
"supportedOutputModalities": [
"text"
]
},
{
"id": "claude-opus-4-5-20251101",
"object": "model",
Expand Down Expand Up @@ -3611,7 +3641,6 @@
"text"
]
}

],
"xai": [
{
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2 changes: 1 addition & 1 deletion internal/runtime/executor/helps/claude_device_profile.go
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Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,7 @@ import (
)

const (
defaultClaudeFingerprintUserAgent = "claude-cli/2.1.220 (external, cli)"
defaultClaudeFingerprintUserAgent = "claude-cli/2.1.251 (external, cli)"

@chatgpt-codex-connector chatgpt-codex-connector Bot Sep 2, 2026

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P1 Badge Update tests for the 2.1.251 fingerprint

Changing this baseline alters both the emitted User-Agent and the billing header version returned by DefaultClaudeVersion, but the committed executor tests still require claude-cli/2.1.220 and cc_version=2.1.220 (notably TestClaudeExecutor_NonClaudeRequestUsesClaudeCode220CLIFingerprint and TestClaudeExecutor_ConfirmedClaudeCodeRequestPreservesInteractiveIdentity). Consequently, the required go test ./... suite will fail once dependencies are available; update the affected fixtures and assertions alongside the baseline.

Useful? React with 👍 / 👎.

defaultClaudeFingerprintPackageVersion = "0.94.0"
defaultClaudeFingerprintRuntimeVersion = "v26.3.0"
defaultClaudeFingerprintOS = "MacOS"
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