# Kimi K2 Thinking

Kimi K2 Thinking is a model from Moonshot with open weights, first recorded on 8 Sep 2026; its release date is not established. The context window is 262,144 tokens. Pricing is $0.60 per million input tokens and $2.50 per million output tokens.

- Developer: Moonshot
- Id: moonshotai/kimi-k2-thinking
- Sighting: 2026-09-08T02:51:30.567Z
  - [evidence link](https://openrouter.ai/moonshotai/kimi-k2-thinking)
- Status: Released
- Weights version: 2025-11-04
  - [evidence link](https://huggingface.co/api/models/moonshotai/Kimi-K2-Thinking/paths-info/a51ccc050d73dab088bf7b0e2dd9b30ae85a4e55)
- Canonical: https://alexgetman.com/models/moonshot/kimi-k2-thinking-1115/

## Questions

### What is the context window of Kimi K2 Thinking?

The context window is 262,144 tokens.

### How much does Kimi K2 Thinking cost?

Pricing is $0.60 per million input tokens and $2.50 per million output tokens. Cached input is $0.15 per million.

### Are the weights of Kimi K2 Thinking publicly available?

Yes. Moonshot publishes the weights.

### When was Kimi K2 Thinking released?

Its release date is not established. Signal Forge first recorded it on 8 Sep 2026.

## Evidence links

- [Artificial Analysis · benchmarks](https://artificialanalysis.ai/models)
- [Vertex AI · Model Garden](https://console.cloud.google.com/vertex-ai/publishers/moonshotai/model-garden/kimi-k2-thinking-maas)
- [aws-bedrock-lifecycle](https://docs.aws.amazon.com/en_en/bedrock/latest/userguide/model-lifecycle-legacy.html)
- [hf-author-artifacts:moonshotai](https://huggingface.co/api/models/moonshotai/Kimi-K2-Thinking/paths-info/a51ccc050d73dab088bf7b0e2dd9b30ae85a4e55)
- [models.dev · catalogue](https://models.dev/#Kimi-K2-Thinking)
- [models.dev · catalogue](https://models.dev/#kimi-k2-thinking)
- [models.dev · catalogue](https://models.dev/#kimi-k2-thinking-maas)
- [models.dev · catalogue](https://models.dev/#moonshot.kimi-k2-thinking)
- [OpenCode · discovery](https://opencode.ai/data/moonshotai/kimi-k2-thinking)
- [OpenRouter](https://openrouter.ai/api/v1/models)
- [openrouter](https://openrouter.ai/moonshotai/kimi-k2-thinking)
- [Moonshot · model index](https://platform.kimi.ai/docs/models)
- [Vercel AI Gateway](https://vercel.com/ai-gateway)

## Signals

- [Kimi K2 Thinking spotted on OpenRouter](https://alexgetman.com/signals/2026/09/08/kimi-k2-thinking/)