Claude Fable 5
Anthropic's Mythos-class flagship — the sharpest reasoner in the fleet
200K context · vision
Every plan includes the entire fleet — you never pick a model. The router chooses per task, using live capability, cost, latency, and learned accuracy, and if a model degrades mid-answer it switches and keeps streaming.
The heavy hitters — deep reasoning, verification passes, and the hardest problems.
Anthropic's Mythos-class flagship — the sharpest reasoner in the fleet
200K context · vision
OpenAI's frontier lane — elite reasoning & agentic coding
400K context · vision
Deep reasoning, verification & vision at million-token context
1M context · vision
Frontier reasoning with native tool use
400K context · vision
Long-form writing & careful analysis
1M context · vision
Dependable specialists for everyday reasoning, coding, and analysis.
The Claude 5 workhorse — frontier-family quality, everyday speed
200K context · vision
Independent second-opinion reviews
1M context · vision
Deep technical reasoning at great value
128K context
The fleet's top dedicated coder
256K context
General work at million-token context, great value
1M context
Quick, capable models for drafting, summaries, and tool loops.
Snappy reasoning for everyday tasks
128K context
Balanced drafting & summaries
400K context
Fast, capable generalist
200K context
Quick general-purpose chat
262K context
Instant-reply models for lightweight tasks and low-latency responses.
Lightning-fast lightweight tasks
128K context
Chat in the browser or point any OpenAI-compatible SDK at the API. Ask for a specific model by name, or let the router orchestrate the whole fleet with KernelFold Ultra — planned, parallelized, independently verified, synthesized.
Free to start · no credit card · live fleet status