Moonshot AI · Released Jul 16, 2026Kimi K3
Multimodal Kimi model with 1M context and toggleable max-effort thinking for long-horizon agent work.
- Capability
- 157.6ECI · #13 of 148
- Input
- $3.00per 1M tokens
- Output
- $15.00per 1M tokens
- Context
- 1.05M131K max output
What it costs
- Input
- $3.00per million tokens
- Output
- $15.00per million tokens
- Cached input
- $0.30per million tokens
- Blended (3:1)
- $6.00pricier than 90% of priced models
Typical monthly bills
| Monthly usage | Estimated cost |
|---|---|
| Side project2M input + 0.5M output tokens | $13.50 |
| Team assistant25M input + 5M output tokens | $150.00 |
| Production app250M input + 50M output tokens | $1,500 |
Official Moonshot AI API price, as listed on models.dev.
Independent benchmarks
#13 of 148 scored models
The shaded band is Epoch AI’s confidence range (154.9–160.4); the tick marks the median scored model.
Scores from Epoch AI, run independently of Moonshot AI.
The details
- Lab
- Moonshot AI
- Released
- Jul 16, 2026
- Context window
- 1,048,576 tokens
- Max output
- 131,072 tokens
- Inputs
- Text, Images, Video
- Output
- Text
- Reasoning
- Adjustable effort low · high · max
- Tool calling
- Yes
- Structured output
- Yes
- Weights
- Open weights
- API model ID
kimi-k3on Moonshot AI- Availability
- 68 API providerslisted on models.dev
What Moonshot AI claims
Published by the lab at launch. Settings vary, so compare these only with care.
| Benchmark | Score | Setting | Source |
|---|---|---|---|
| DeepSWE v1.1 | 67.5 resolve rate | max effort | Source |
| Terminal-Bench v2.1 | 88.3 | max effort | Source |
| FrontierSWE | 81.2 | max effort | Source |
| Program Bench | 77.8 | max effort | Source |
| SWE Marathon v1.1 | 42 resolve rate | max effort | Source |
| GDPval-AA vv2 | 1668 Elo | max effort | Source |
| AA-Briefcase | 1548 Elo | max effort | Source |
| AutomationBench | 30.8 success rate | max effort | Source |
| JobBench | 52.9 | max effort | Source |
| SpreadsheetBench v2 | 34.8 | max effort | Source |
| BrowseComp | 91.2 | max effort, context compaction | Source |
| CharXiv Reasoning | 91.3 | max effort, with tools | Source |
More from Moonshot AI
About Kimi K3
How much does Kimi K3 cost?
Kimi K3 costs $3.00 input / $15.00 output per million tokens (official Moonshot AI API price). Cached input is $0.30 per million tokens. At a 3:1 input-to-output mix that is $6.00 per million tokens, more expensive than 90% of the 360 priced models we track.
What is the context window of Kimi K3?
Kimi K3 accepts up to 1,048,576 tokens per request and can write up to 131,072 tokens in one response.
How good is Kimi K3?
Epoch AI gives Kimi K3 a Capabilities Index score of 157.6 (likely range 154.9–160.4), ranking it #13 of 148 models Epoch has scored. Epoch AI benchmark results: GPQA Diamond 93.1%, FrontierMath Tiers 1–3 72.2%, OTIS Mock AIME 2024–2025 97.2%, SimpleQA Verified 50.6%.
Is Kimi K3 open source?
Yes. Moonshot AI publishes the weights, so it can be downloaded and self-hosted.
What inputs does Kimi K3 support?
Kimi K3 accepts text, images and video and replies in text. It is a reasoning model with low, high and max effort settings, supports tool calling and can return structured JSON output.
When was Kimi K3 released?
Moonshot AI released Kimi K3 on Jul 16, 2026.
What are the best alternatives to Kimi K3?
The closest current models from other labs on capability, price and release date are GPT-5.4 (OpenAI, ECI 156.9, $2.50 / $15.00), Claude Sonnet 5 (Anthropic, ECI 156.3, $2.00 / $10.00), Qwen3.8 Max (Alibaba (Qwen), ECI 156.6, $2.00 / $6.00) and Grok 4.6 (xAI, ECI 156.6, $2.00 / $6.00).