- Add `gpt-6-astra` model specifications and capabilities to registry models.
- Update Codex client models configuration and instructions for `gpt-6-astra`.
- Bump default Codex client version and user-agent to `0.153.3` in model fetcher tool.
- Add `claude-fable-5-1` model definition with thinking configuration and multimodal capabilities.
- Add `gemini-3.8-flash` and `gemini-3.8-flash-high` model definitions across Google and Antigravity registries.
Remove gemini-3-flash-agent and legacy gemini-3.5-flash entries from the embedded antigravity model registry in models.json, as upstream Google Cloud Code / Antigravity endpoints return 500 UNKNOWN for these model IDs. Update excluded model tests to assert against active model gemini-pro-agent instead.
- Add `RegistrationEpoch` and `Generation` tracking to `Auth` and model registry to prevent stale scheduling and snapshot reconciliation races.
- Implement scheduler removal tombstones and `ApplyClientModelProjections` in the model registry to atomically discard out-of-order state updates.
- Track logical route models across execution results and preserve active model cooldowns during registry reconciliation.
- Add missing model schema fields including `multi_agent_reasoning_effort`, `requires_sandboxed_review`, `persistent_instructions`, `guardian_v2`, and `confirmation_policies`.
- Raise GPT 5.6 Sol/Terra/Luna `context_length` values to `921000` in `internal/registry/models/models.json`.
- Update matching Codex client model settings to `context_window: 272000` and `max_context_window: 921000` in `internal/registry/models/codex_client_models.json`.
- Add registry generation tracking and a Codex catalog revision accessor to provide stable cache keys.
- Cache parsed model templates and rendered spawn-agent markdown, and reuse them across requests when revision/generation are unchanged.
- Invalidate/recompute caches when model registrations or catalog content change, and separate rewrite handling for spawn tool descriptions vs. message encryption stripping.
Closes: #4967
- Added `gemini-3.7-flash-high` to `internal/registry/models/models.json` with completion/context limits, multimodal input/output metadata, and supported thinking levels.
- Added `supportedInputModalities` and `supportedOutputModalities` across model entries in `internal/registry/models/models.json`.
- Filled capability metadata for text/image/audio/video-aware models (mainly Claude/Gemini-family and related provider routes), including Gemini image variants and image-generation models.
- Standardized modality descriptors for multimodal compatibility checks in model routing/validation without changing existing token or generation settings.
- Added `grok-imagine-image-2.0` as a first-class xAI image base model across validation, canonicalization, and routing checks.
- Registered the model in built-in model definitions so it appears in model metadata.
- Updated image model allowlists and request validation error messaging to include the new model.
- Marked the new model as hidden in client visibility override handling.
- Added `is-compat` model metadata plumbing from config through executor and helpers, including hash computation.
- Introduced a compatibility-aware translation path (`TranslateRequestWithAPIKeyModelCompatibility`) and wired it into Claude/Gemini/Codex/Interactions request flows.
- Updated Claude message sanitization/translation behavior to keep empty-thinking compatibility blocks (including signatures) when `is-compat` is enabled, while keeping default behavior unchanged.
- Add optional `max-context-length` model configuration across supported provider model types and expose it via `GetMaxContextLength`.
- Propagate the override into model metadata so Codex/client model catalog responses honor the configured value (`context_window`, `max_context_window`, and `max_context_length`).
- Update example configuration with documented usage of the new option.
Closes: #4728
- Added new model `Kimi K3 256K` with 256K context support and image input capability.
- Enhanced `Kimi K3` configuration by introducing `thinking` options and increasing context length.
Closes: #4612
- Added detailed specifications for `Gemini 3.1 Pro Preview`, `Gemini 3.5 Flash Lite`, and `Gemini 3.6 Flash` models, including token limits, generation methods, and thought levels.
- Updated `models.json` to include entries for all three versions.
Closes: #4555
- Added detailed specifications for `Gemini 3.5 Flash Lite` and `Gemini 3.6 Flash` models, including token limits, generation methods, and thought levels.
- Updated `models.json` to include entries for both versions across relevant segments.
Closes: #4521
- Extended `models.json` with Claude Opus 5, a premium high-context model by Anthropic.
- Added Gemini 3.6 Flash (High) by Antigravity, with advanced token and thinking configurations.
- Removed "Preview" suffix from model IDs, display names, and descriptions.
- Standardized naming conventions for all Gemini 3.x models to reflect production readiness.
- Updated Kimi executor to route all Claude requests through the OpenAI-compatible chat completions API.
- Removed legacy delegation to Claude executor for non-streaming and streaming execution.
- Enhanced translator integration for request normalization and Kimi model stripping.
- Updated tests to validate chat completions behavior, including upstream request logging, payload transformation, and response handling.
- Deleted Kimi K3[1M] variant and associated metadata.
Load codex_client_models.json like models.json with validation, revisioned
handler reloads, CI bake, and Home-aware updater gates so list IDs still
come from Home while templates can refresh on the edge.
- Incremented `defaultClientVersion` and `defaultCodexUserAgent` to `0.144.1`.
- Replaced GPT-5.5 with GPT-5.6 Sol in model registry, updating metadata including context window length, reasoning levels, and description.
- Enhanced model metadata with adjusted parameters, reasoning format, and new effort levels.
- Introduced `override_header` in model configurations to support runtime customization of upstream request headers.
- Added `applyModelHeaderOverrides` utility to enforce header overrides for relevant executor and websocket paths.
- Updated model registry and `models.json` with enhanced configurations for header customizations.
- Implemented and extended test cases to validate header override behavior for various models and scenarios.
- Bumped the `defaultClientVersion` and `defaultCodexUserAgent` to `0.144.0`.
- Replaced GPT-5.6 Sol with GPT-5.5 in model registry, adjusting metadata including context window length and reasoning levels.
- Updated `usage_helpers` to include `cache_write_tokens` logic for input token details.
- Registered new GPT-5.6 models (Sol, Terra, Luna) with detailed configurations, including increased context length and advanced reasoning levels.
- Updated client model configurations and metadata for GPT-5.6 Sol in `codex_client_models.json`.
- Registered Grok 4.5 with advanced agentic software and workflow task handling.
- Increased context length and max completion tokens for enhanced performance.
- Updated display names and descriptions of existing Gemini 3.5 Flash variants for better clarity.
- Introduced a new "Gemini 3.5 Flash (Medium)" variant with distinct configuration.
- Renamed "Low" tier to "Extra Low" for improved naming consistency.
Closes: #3949
