21. v0.9.1 — Current AI model catalogs

Prepared 2026-08-22. This patch refreshes every AI assistant model selector against the providers' current catalogs and updates the integration behavior required by those models. Follows v0.9.0.

Updated

• OpenAI. The selector now offers GPT-5.6 Sol, Terra, and Luna, with gpt-5.6-terra as the balanced default.
• Anthropic. Claude Sonnet 5 is the default alongside Opus 5, Fable 5, and Haiku 4.5. Fable is visibly marked as requiring 30-day retention and being unavailable under zero-data-retention arrangements.
• Google AI Studio. Gemini 3.7 Flash is the default, with Gemini 3.6 Flash, 3.5 Flash, and the explicitly marked Gemini 3.1 Pro Preview available.
• AWS Bedrock. Claude Sonnet 5 is the default alongside Opus 5, Opus 4.8, Haiku 4.5, and Nova 2 Lite. Callable inference-profile IDs are preserved exactly instead of constructing regional prefixes that may not exist.
• Google Vertex AI. Gemini 3.5 Flash is the long-lived default, with current Gemini Flash, Gemini 3.1 Pro Preview, and supported Claude 4.x models available through the global endpoint.

Compatibility and migration

• Known stored model IDs migrate to a current tier-equivalent replacement, while unknown, custom, or malformed IDs fall back safely to the selected provider's default.
• The AI SDK remains on the compatible v6 generation, pinned to current patches; Bedrock and Vertex now use native ProviderV3 adapters rather than legacy compatibility wrappers.
• GPT-5.6 reasoning, Claude, and Gemini 3 requests omit fixed sampling controls that conflict with provider-managed reasoning defaults.
• Direct Anthropic streaming preserves signed and redacted thinking blocks across tool-call rounds and reports refusal stops explicitly.
• Provider setup documentation records the static catalog policy, preview and retention labels, Bedrock source-region requirements, and Vertex global-routing caveats.

Verification

• Dedicated regressions cover exact provider catalogs and defaults, unique current and legacy IDs, local-storage migrations, unsupported custom IDs, sampling policy, Bedrock ID preservation, current proxy fixtures, and Anthropic thinking/refusal streams.
• A frozen dependency install, the complete automated suite, TypeScript, lint, and the optimized production build passed during release preparation. The suite covered 254 files and 1,939 tests, and the build generated all 102 static pages.

Next steps

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