Moonshot AI · Released Jan 27, 2026Kimi K2.5
Earlier Kimi frontier model for long-context agents, coding, and multimodal work.
- Capability
- 148.0ECI · #58 of 148
- Input
- $0.60per 1M tokens
- Output
- $3.00per 1M tokens
- Context
- 262K262K max output
What it costs
- Input
- $0.60per million tokens
- Output
- $3.00per million tokens
- Blended (3:1)
- $1.20pricier than 59% of priced models
Typical monthly bills
| Monthly usage | Estimated cost |
|---|---|
| Side project2M input + 0.5M output tokens | $2.70 |
| Team assistant25M input + 5M output tokens | $30.00 |
| Production app250M input + 50M output tokens | $300.00 |
Median of 21 paid API providers on models.dev.
Independent benchmarks
#58 of 148 scored models
The shaded band is Epoch AI’s confidence range (146.5–149.3); the tick marks the median scored model.
Scores from Epoch AI, run independently of Moonshot AI.
The details
- Lab
- Moonshot AI
- Released
- Jan 27, 2026
- Knowledge cutoff
- Jan 2025
- Context window
- 262,144 tokens
- Max output
- 262,144 tokens
- Inputs
- Text, Images, Video
- Output
- Text
- Reasoning
- Always on
- Tool calling
- Yes
- Structured output
- Yes
- Weights
- Open weights
- Availability
- 21 API providerslisted on models.dev
What Moonshot AI claims
Published by the lab at launch. Settings vary, so compare these only with care.
More from Moonshot AI
About Kimi K2.5
How much does Kimi K2.5 cost?
Kimi K2.5 costs $0.60 input / $3.00 output per million tokens (median across 21 API providers). At a 3:1 input-to-output mix that is $1.20 per million tokens, more expensive than 59% of the 360 priced models we track.
What is the context window of Kimi K2.5?
Kimi K2.5 accepts up to 262,144 tokens per request and can write up to 262,144 tokens in one response.
How good is Kimi K2.5?
Epoch AI gives Kimi K2.5 a Capabilities Index score of 148.0 (likely range 146.5–149.3), ranking it #58 of 148 models Epoch has scored. Epoch AI benchmark results: GPQA Diamond 87.6%, OTIS Mock AIME 2024–2025 92.2%, SWE-bench Verified 73.8%, SimpleQA Verified 34.3%.
Is Kimi K2.5 open source?
Yes. Moonshot AI publishes the weights, so it can be downloaded and self-hosted.
What inputs does Kimi K2.5 support?
Kimi K2.5 accepts text, images and video and replies in text. It is a reasoning model, supports tool calling and can return structured JSON output.
When was Kimi K2.5 released?
Moonshot AI released Kimi K2.5 on Jan 27, 2026. Its training data runs to Jan 2025.
What are the best alternatives to Kimi K2.5?
The closest current models from other labs on capability, price and release date are Qwen3.6 Plus (Alibaba (Qwen), ECI 147.6, $0.50 / $3.00), GPT-5.4 mini (OpenAI, ECI 148.8, $0.75 / $4.50), GLM-5 (Z.ai (Zhipu), ECI 145.8, $1.00 / $3.20) and Grok 4.3 (xAI, ECI 149.2, $1.25 / $2.50).