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MoonshotAI · Language model

Kimi K2 0905

moonshotai/kimi-k2-0905
  • Language
Released Sep 4, 2025

Kimi K2 0905 is the September update of [Kimi K2 0711](moonshotai/kimi-k2). It is a large-scale Mixture-of-Experts (MoE) language model developed by Moonshot AI, featuring 1 trillion total parameters with 32...

Specifications

Context window
262,144 tokens
Max output
98,304 tokens
Input
text
Output
text
Tokenizer
Other
Knowledge cutoff
2024-12-31

Supported parameters

Accepted by the model and forwarded as-is by the gateway.

  • frequency_penalty
  • max_tokens
  • presence_penalty
  • repetition_penalty
  • response_format
  • seed
  • stop
  • structured_outputs
  • temperature
  • tool_choice
  • tools
  • top_k
  • top_p

Use it

POST /api/v1/chat/completions · MCP chat · full reference

curl https://omnirail.org/api/v1/chat/completions \
  -H "Authorization: Bearer $OMNIRAIL_KEY" -H "Content-Type: application/json" \
  -d '{"model":"moonshotai/kimi-k2-0905","messages":[{"role":"user","content":"Hello"}],"max_tokens":300}'