Is Kimi K2.5 available on FastMetal?

Not at the moment. Kimi K3, from the same lab, is available on the FastMetal API today.

What is the context window of Kimi K2.5?

262,144 tokens, shared between the prompt and the response.

moonshotai/kimi-k2-5

Not Available

Kimi K2.5

Kimi K2.5 is Moonshot AI's native multimodal model, delivering state-of-the-art visual coding capability and a self-directed agent swarm paradigm. Built on Kimi K2 with continued pretraining over approximately 15T mixed visual and text tokens, it delivers strong performance in general reasoning, visual coding, and agentic tool-calling.

1/27/2026

262,144 tokens

Specifications

Modalities

Input

text

image

Output

text

Supported Parameters

frequency_penalty

include_reasoning

logit_bias

logprobs

max_tokens

min_p

parallel_tool_calls

presence_penalty

reasoning

reasoning_effort

repetition_penalty

response_format

seed

stop

structured_outputs

temperature

tool_choice

tools

top_k

top_logprobs

top_p

Max Output Tokens

65,535

Reasoning Configuration

Default: Thinking on
Turning thinking off: Possible (reasoning.enabled: false)

How to control thinking, and what it costs

Frequently asked questions

Is Kimi K2.5 available on FastMetal?: Not at the moment. Kimi K3, from the same lab, is available on the FastMetal API today.
What is the context window of Kimi K2.5?: 262,144 tokens, shared between the prompt and the response.

Models you can use on FastMetal