Models

Models

Models shape how your agent reasons, writes, and decides what to do next. Choose a model based on the work you expect the agent to handle: everyday triage, deep research, long-context planning, code changes, or fast lightweight responses.

The model picker includes a short list of featured models and a More models menu for additional options. Availability can vary by workspace; models marked unavailable in the picker cannot be selected.

The Model ID is what you pass as model in an agent spec through the Universal Harness API, or as default_model when creating an agent directly.

Featured models

Model	Model ID	Provider
GPT-5.6 Sol	gpt-5.6-sol	OpenAI
GPT-5.6 Terra	gpt-5.6-terra	OpenAI
GPT-5.6 Luna	gpt-5.6-luna	OpenAI
Claude Opus 4.8	claude-opus-4-8	Anthropic
Claude Sonnet 5	claude-sonnet-5	Anthropic
Gemini 3.5 Flash	gemini-3.5-flash	Google
Grok 4.5	grok-4.5	xAI

More models

Model	Model ID	Provider
GPT-5.5	gpt-5.5	OpenAI
GPT-5.4	gpt-5.4	OpenAI
GPT-5.2	gpt-5.2	OpenAI
GPT-5	gpt-5	OpenAI
GPT-5 Mini	gpt-5-mini	OpenAI
GPT-5 Nano	gpt-5-nano	OpenAI
GPT-4o	gpt-4o	OpenAI
GPT-4o Mini	gpt-4o-mini	OpenAI
Claude Sonnet 4.6	claude-sonnet-4-6	Anthropic
Claude Opus 4.7	claude-opus-4-7	Anthropic
Claude Opus 4.6	claude-opus-4-6	Anthropic
Claude Opus 4.5	claude-opus-4-5-20251101	Anthropic
Claude Sonnet 4.5	claude-sonnet-4-5-20250929	Anthropic
Claude Sonnet 4	claude-sonnet-4-20250514	Anthropic
Claude Haiku 4.5	claude-haiku-4-5-20251001	Anthropic
Gemini 3.0 Flash	gemini-3-flash-preview	Google
Gemini 2.5 Pro	gemini-2.5-pro	Google
Gemini 2.5 Flash	gemini-2.5-flash	Google
Grok 4	grok-4	xAI
Grok 4 Fast	grok-4-fast	xAI
GLM 5.2	zai-org/GLM-5.2	Baseten
DeepSeek V4	deepseek-ai/DeepSeek-V4-Pro	Baseten
Kimi K2.7 Code	moonshotai/Kimi-K2.7-Code	Baseten

Baseten-hosted models route through Baseten's OpenAI-compatible endpoint and reason on their own — they don't take an effort setting.