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Enable Claude 5.1 through Anthropic - #2138

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DanielButler1 merged 1 commit into
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fix/enable-anthropic-fable51-20260901
Sep 1, 2026
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Enable Claude 5.1 through Anthropic#2138
DanielButler1 merged 1 commit into
mainfrom
fix/enable-anthropic-fable51-20260901

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Summary

Correct the Claude 5.1 launch configuration so Fable 5.1 and first-party-only Mythos 5.1 are available exclusively through the direct Anthropic provider.

Solution

  • Enable the direct Anthropic gateway routes for Claude Fable 5.1 and Claude Mythos 5.1.
  • Keep Anthropic US, Claude Platform on AWS, Amazon Bedrock, and Google Vertex AI mappings disabled.
  • Add the Mythos 5.1 canonical record and sync the June 2026 cutoff, 1M context, and 64K default / 128K maximum output reported for both models.
  • Move the stable Fable alias to Fable 5.1.
  • Add provisional inherited Fable/Mythos pricing required for safe gateway accounting until 5.1-specific rates are published.
  • Regenerate the OpenAPI and SDK model-ID surfaces.

Validation

  • pnpm run openapi:gen — passed; existing unsupported-schema warnings only.
  • pnpm run validate:data — passed with existing non-blocking catalogue warnings.
  • pnpm run validate:pricing — passed.
  • pnpm run validate:gateway — passed.
  • git diff --check — passed.

Release impact

Adds a patch changeset for @phaseo/data-catalog and exposes both Claude 5.1 IDs through generated SDK model constants.

No visual evidence is required because this is a catalogue and gateway-routing correction.

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Project Deployment Actions Updated
phaseo Building Building Preview Sep 1, 2026 5:44pm UTC

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@DanielButler1
DanielButler1 merged commit f7d96ed into main Sep 1, 2026
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Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

Scanned Files

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@DanielButler1
DanielButler1 deleted the fix/enable-anthropic-fable51-20260901 branch September 1, 2026 17:44

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💡 Codex Review

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Reviewed commit: 27daf54e38

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"api_model_id": "anthropic/claude-fable-5.1",
"capability_id": "text.generate",
"rules": [
{ "meter": "input_text_tokens", "unit": "token", "unit_size": 1000000, "price_per_unit": 10, "currency": "USD", "pricing_plan": "standard", "note": "Provisional Fable 5 rate pending Fable 5.1-specific pricing.", "match": [], "priority": 100, "effective_from": "2026-09-01T00:00:00Z", "region": null, "cache_duration_seconds": null, "conditions": [], "source": null },

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P1 Badge Do not bill 5.1 usage using inferred legacy prices

When Anthropic's 5.1 rates differ from Fable/Mythos 5, these active pricing cards make computeBill charge customers the legacy $10 input/$50 output rates even though every token rule has source: null and is explicitly described as provisional; the Mythos 5.1 card repeats the same issue. Keep the routes disabled until authoritative rates exist, or represent the price as unknown rather than installing inferred billing values.

AGENTS.md reference: packages/data/catalog/AGENTS.md:L10-L10

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@@ -0,0 +1,5 @@
---
"@phaseo/data-catalog": patch

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P2 Badge Add the modified SDK packages to the changeset

This changeset bumps only @phaseo/data-catalog, although the commit adds public model constants/types to the TypeScript, Python, Go, C#, Java, PHP, and Ruby SDKs. The SDK auto-release script will not compensate because the presence of this manual changeset makes it skip generation, so the next release can consume these edits without publishing new SDK package versions; list each affected SDK package with the appropriate patch bump.

AGENTS.md reference: packages/sdk/AGENTS.md:L23-L23

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