Claude Fable 5 vs Kimi K3

Anthropic's Claude Fable 5 against Moonshot's Kimi K3 — price, context and what each is best at. Both are available through one OpenAI-compatible API.

AnyModel — you pay	Claude Fable 5	Kimi K3
Vendor	Anthropic	Moonshot
Input / 1M	$0.8	$0.075
Output / 1M	$0.8	$0.075
Context	1M	256K
Best for	Hardest problems	Complex coding

Claude Fable 5

Anthropic's Mythos-class tier above Opus — #1 on our AI Arena.

Claude Fable 5 is the first model of Anthropic's Claude 5 family — a Mythos-class tier that sits above Opus in capability. It tops our agentic AI Arena ranking and comes with a 1M-token window. Vendor list price is $10/$50 per 1M.

More about Claude Fable 5 →

Kimi K3

Moonshot's new flagship for coding, games and knowledge work.

Kimi K3 is Moonshot's newest flagship model, served through the connected Kimi Code subscription. It requires the Moderato tier or higher and has the Kimi Code route's 256K context limit.

More about Kimi K3 →

Quick take: pick Kimi K3 when cost matters most; pick Claude Fable 5 when you need the largest context. With AnyModel you don't have to choose up front — switch the model id any time.

FAQ

Which is cheaper, Claude Fable 5 or Kimi K3?

Kimi K3 is cheaper on output tokens ($0.075 vs $0.8 per 1M).

Which has a larger context window, Claude Fable 5 or Kimi K3?

Claude Fable 5 has the larger context window (1M).