xAI · Grok 4
Grok 4.6
xAI's most intelligent model.
What it is
Grok 4.6 is xAI's most intelligent model: frontier reasoning at speed, a 500K-token context, and stronger long-running agents.
It is strongest on first-pass structure — getting an interactive build standing quickly — then iterating in a loop until it is finished.
Profiles describe the model, not a guarantee: the Skill folder is what makes the work repeatable, and the agent's settings decide what the model can reach.
What it's best at
The work this engine is built for, and where it earns its place in a run.
Long-running agents
Keeps planning and executing through a build loop rather than stopping at the first draft.
First-pass structure
Gets a working app standing from one prompt, then refines it.
Coding
Top-tier code generation for interactive and visual work.
Speed
Frontier reasoning without the long wait between iterations.
A good first run
Three web Skills to try on Grok 4.6 — each one a folder of instructions the model can pick up straight away.
Other models
The rest of the engine room.
Anthropic · Claude 5.5
Opus 5.5
Anthropic's newest frontier model, built to carry long, multi-step work from one prompt to a finished result.
- Context
- 1M tokens
- Best at
- Agentic coding
OpenAI · GPT-6
GPT-6 Astra
OpenAI's frontier model for end-to-end agentic work, reasoning across a task rather than a single turn.
- Context
- ≈1M tokens
- Best at
- End-to-end work
Anthropic · Claude Fable 5.1
Fable 5.1
Anthropic's top model for demanding reasoning and long-horizon agentic work, with adaptive thinking.
- Context
- 1M tokens
- Best at
- Demanding reasoning
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