Hephaestus now uses gpt-5.4 as its default model across all providers
(openai, github-copilot, venice, opencode), matching Sisyphus's GPT 5.4
support. The separate gpt-5.3-codex → github-copilot fallback entry is
removed since gpt-5.4 is available on all required providers.
Add support for object-style entries in fallback_models arrays, enabling
per-model configuration of variant, reasoningEffort, temperature, top_p,
maxTokens, and thinking settings.
- Zod schema for FallbackModelObject with full validation
- normalizeFallbackModels() and flattenToFallbackModelStrings() utilities
- Provider-agnostic model resolution pipeline with fallback chain
- Session prompt params state management
- Fallback chain construction with prefix-match lookup
- Integration across delegate-task, background-agent, and plugin layers
- Upgrade minimax-m2.5 → minimax-m2.7 (latest model) across all agents and categories
- Replace minimax-m2.5-free with minimax-m2.7-highspeed (optimized speed variant)
- Expand MiniMax fallback coverage to atlas, sisyphus-junior, writing, and unspecified-low
- Add isMiniMaxModel() detection function in types.ts for model family detection
- Update all tests (58 passing) and documentation
Keep install-time and runtime model tables in sync, stop OpenAI-only misrouting when OpenCode Go is present, and add valid OpenAI fallbacks for atlas, metis, and sisyphus-junior.
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
Change multimodal-looker's primary model from gpt-5.3-codex to gpt-5.4 medium
in both runtime and CLI fallback chains.
Changes:
- Runtime chain (src/shared/model-requirements.ts): primary now gpt-5.4
- CLI chain (src/cli/model-fallback-requirements.ts): primary now gpt-5.4
- Updated test expectations in model-requirements.test.ts
- Updated config-manager.test.ts assertion
- Updated model-fallback snapshots
Sisyphus can now fall back through Kimi and OpenAI models when Claude
is unavailable, enabling OpenAI-only users to use Sisyphus directly
instead of being redirected to Hephaestus.
Runtime chain: claude-opus-4-6 max → k2p5 → kimi-k2.5 → gpt-5.4 medium → glm-5 → big-pickle
CLI chain: claude-opus-4-6 max → k2p5 → gpt-5.4 medium → glm-5
Sisyphus-Junior was missing from BuiltinAgentName type, agentSources map,
barrel exports, and AGENT_MODEL_REQUIREMENTS. This caused type inconsistencies
and prevented model-fallback hooks from working for sisyphus-junior sessions.
Closescode-yeongyu/oh-my-openagent#1697
Align runtime defaults, tests, docs, and generated artifacts with the newer GPT-5.4 baseline. Keep think-mode and prompt-routing expectations consistent after the model version bump.
kimi-k2.5-free is no longer available. Remove from all agent and category
fallback chains (sisyphus, multimodal-looker, prometheus, metis, atlas,
writing). Reorder multimodal-looker to: gpt-5.3-codex medium -> k2p5 ->
gemini-3-flash -> glm-4.6v -> gpt-5-nano.
GPT-5.3 Codex has strong multimodal capabilities. Promote it to first
candidate in multimodal-looker fallback chain, with gemini-3-flash
following (matching the ULW pattern of gpt-5.3-codex -> gemini).
gpt-5.3-codex is not available on GitHub Copilot. The fallback chains
incorrectly listed github-copilot as a valid provider for this model,
causing the doctor to report 'configured model github-copilot/gpt-5.3-codex
is not valid' for Hephaestus agent.
Affected agents: hephaestus (requiresProvider + fallbackChain)
Affected categories: ultrabrain, deep, unspecified-low
Copilot users can still use Hephaestus via openai or opencode providers.
Fixes#2047
- BUG-7: Add gpt-5-nano as final fallback in multimodal-looker model requirements
- BUG-14: Remove hardcoded LIBRARIAN_MODEL, let librarian resolve through normal fallback chain
- Update snapshots and tests to reflect new fallback behavior
- Add per-message ultrawork mode detection via keyword matching
- Implement deferred DB override strategy using microtask retry loop
- Fall back to setTimeout after 10 microtask retries for robustness
- Update agent configuration schema with ultrawork model/variant fields
- Integrate with chat.message hook to apply overrides on detection
- Add comprehensive tests for all override scenarios
- Generated schema includes ultrawork configuration
🤖 Generated with assistance of OhMyOpenCode (https://github.com/code-yeongyu/oh-my-opencode)
Add alternative providers to free-tier and cross-provider models:
- k2p5: add friendli as alternative to kimi-for-coding
- kimi-k2.5-free, minimax-m2.5-free, big-pickle, gpt-5-nano: add opencode-zen-abuse
- grok-code-fast-1: add venice as alternative to github-copilot
- glm-5: add opencode as alternative to zai-coding-plan
After model version update (opus-4-5 → opus-4-6), several agents had
identical duplicate fallback entries for the same model. The anthropic-only
entry was a superset covered by the broader providers entry, making it dead
code. Consolidate to single entry with all providers.
Hephaestus now appears when any of its providers (openai, github-copilot, opencode) is
connected, rather than requiring the exact gpt-5.2-codex model. This allows users with
newer codex models (e.g., gpt-5.3-codex) to use Hephaestus without manual config overrides.
- Add requiresProvider field to ModelRequirement type
- Add isAnyProviderConnected() helper in model-availability
- Update hephaestus config from requiresModel to requiresProvider
- Update cli model-fallback to handle requiresProvider checks
Add claude-opus-4-6 as the first anthropic provider entry before
claude-opus-4-5 across all agent and category fallback chains.
Also add high variant mapping for think-mode switcher.
Gemini 3 Pro only supports 'low' and 'high' thinking levels according to
Google's official API documentation. The 'max' variant is not supported
and would result in API errors.
Changed variant: 'max' -> 'high' for gemini-3-pro in:
- oracle agent
- metis agent
- momus agent
- ultrabrain category
- deep category
- artistry category
Ref: https://ai.google.dev/gemini-api/docs/thinking-modeCloses#1433
* fix(model-requirements): use supported variant for gemini-3-pro
* fix(delegate-task): update artistry variant to high for gemini-3-pro
- Update DEFAULT_CATEGORIES artistry variant from 'max' to 'high'
- Update related test comment
- gemini-3-pro only supports low/high thinking levels, not max
- Addresses Oracle review feedback
* refactor(keyword-detector): split constants into domain-specific modules
* feat(shared): add requiresAnyModel and isAnyFallbackModelAvailable
* feat(config): add hephaestus to agent schemas
* feat(agents): add Hephaestus autonomous deep worker
* feat(cli): update model-fallback for hephaestus support
* feat(plugin): add hephaestus to config handler with ordering
* test(delegate-task): update tests for hephaestus agent
* docs: update AGENTS.md files for hephaestus
* docs: add hephaestus to READMEs
* chore: regenerate config schema
* fix(delegate-task): bypass requiresModel check when user provides explicit config
* docs(hephaestus): add 4-part context structure for explore/librarian prompts
* docs: fix review comments from cubic (non-breaking changes)
- Move Hephaestus from Primary Agents to Subagents (uses own fallback chain)
- Fix Hephaestus fallback chain documentation (claude-opus-4-5 → gemini-3-pro)
- Add settings.local.json to claude-code-hooks config sources
- Fix delegate_task parameters in ultrawork prompt (agent→subagent_type, background→run_in_background, add load_skills)
- Update line counts in AGENTS.md (index.ts: 788, manager.ts: 1440)
* docs: fix additional documentation inconsistencies from oracle review
- Fix delegate_task parameters in Background Agents example (docs/features.md)
- Fix Hephaestus fallback chain in root AGENTS.md to match model-requirements.ts
* docs: clarify Hephaestus has no fallback (requires gpt-5.2-codex only)
Hephaestus uses requiresModel constraint - it only activates when gpt-5.2-codex
is available. The fallback chain in code is unreachable, so documentation
should not mention fallbacks.
* fix(hephaestus): remove unreachable fallback chain entries
Hephaestus has requiresModel: gpt-5.2-codex which means the agent only
activates when that specific model is available. The fallback entries
(claude-opus-4-5, gemini-3-pro) were unreachable and misleading.
---------
Co-authored-by: justsisyphus <justsisyphus@users.noreply.github.com>
