Moonshot AI, proprietary
Kimi K3.1 Pro
Kimi K3.1 Pro by Moonshot AI ranks 24th of 368 ranked models on the Noometry Index as of November 2026, with a score of 57.8. Its strongest category is writing & preference, where it ranks 1st. API pricing starts at $2 per million input tokens and $10 per million output tokens, with a 1.05M-token context window.
Last verified
Specifications
- Noometry rank
- #24 of 368
- Index score
- 57.8
- Evidence
- Confirmed 7 results
- Provider
- Moonshot AI
- Released
- October 23, 2026
- Weights
- Proprietary
- Reasoning
- Yes
- Context window
- 1.05M
- Max output
- 1.05M
- Input price
- $2 / M
- Output price
- $10 / M
- Blended price
- $4 / M
- Output speed
- Not measured
- Value
- #165 of 217
- Knowledge cutoff
- Unknown
- Input
- text, image, video
Category scores
Each category score combines every public result we have in that category.
- Coding 56.6
- Reasoning 57.1
- Math 66.1
- Writing & Preference 82.4
| Category | Score | Rank | Results |
|---|---|---|---|
| Coding | 56.6 | #26 | 2 |
| Reasoning | 57.1 | #29 | 2 |
| Math | 66.1 | #32 | 1 |
| Writing & Preference | 82.4 | #1 | 1 |
Strengths and weaknesses
Categories where Kimi K3.1 Pro places highest and lowest among the models ranked in each, with its score against that category's median.
Strongest categories
| Category | Score | vs median | Rank |
|---|---|---|---|
| Writing & Preference | 82.4 | +28.9 | #1 of 317, top 1% |
| Coding | 56.6 | +17.3 | #26 of 346, top 8% |
Closest competitors
The models ranked just above and below Kimi K3.1 Pro. When scores are this close, price and speed are often the better way to choose.
| Model | Rank | Score | Blended $/M | Speed | |
|---|---|---|---|---|---|
| GPT-5.6 Terra | #20 | 59.1 | $4.50 | 11 | Compare |
| DeepSeek V4.1 Flash | #21 | 58.5 | $0.26 | — | Compare |
| Claude Opus 4.7 | #22 | 58.4 | $10 | 33 | Compare |
| Claude Opus 4.6 | #23 | 58.2 | $10 | 19 | Compare |
| Muse Wonder | #25 | 57.4 | $8 | — | Compare |
| Qwen3.8 Max | #26 | 56.9 | $3 | — | Compare |
| Grok 4.6 | #27 | 56.8 | $3 | — | Compare |
| Gemini 3.1 Pro Preview | #28 | 56.6 | $4.50 | — | Compare |
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Benchmark results
Every published result we track, with its source. Bold rows are the ones used for ranking; where several exist we prefer independent runs over self-reported numbers.
Coding
| Benchmark | Score | Position | Setting | Source | Date |
|---|---|---|---|---|---|
| LMArena WebDev | 1695 | #7 of 119, top 6% | Kimi K3.1 Pro (Max) | LMArena | 2026-10-28 |
| SciCode | 60.8% | #8 of 128, top 7% | Epoch AI | ||
| ALE-Bench | 1,933 | #13 of 114, top 12% | max | Epoch AI |
Reasoning
| Benchmark | Score | Position | Setting | Source | Date |
|---|---|---|---|---|---|
| NYT Connections (extended) | 93.4% | #12 of 94, top 13% | high reasoning | Lech Mazur benchmarks | |
| CritPt | 24.6% | #21 of 154, top 14% | Epoch AI |
Math
| Benchmark | Score | Position | Setting | Source | Date |
|---|---|---|---|---|---|
| ProofBench | 91% | #9 of 81, top 12% | Epoch AI |
Writing & Preference
| Benchmark | Score | Position | Setting | Source | Date |
|---|---|---|---|---|---|
| EQ-Bench Creative Writing | 2173 | #2 of 118, top 2% | EQ-Bench |
API pricing by provider
| Route | Input $/M | Output $/M | Cached input $/M | Checked |
|---|---|---|---|---|
| moonshot | $2 | $10 | $0.20 | 2026-11-04 |
| openrouter | $2 | $10 | $0.20 | 2026-11-04 |
Compare Kimi K3.1 Pro
- Kimi K3.1 Pro vs Claude Opus 4.6
- Kimi K3.1 Pro vs Muse Wonder
- Kimi K3.1 Pro vs Claude Opus 4.7
- Kimi K3.1 Pro vs Qwen3.8 Max
- Kimi K3.1 Pro vs DeepSeek V4.1 Flash
- Kimi K3.1 Pro vs Grok 4.6
- Kimi K3.1 Pro vs GPT-6 Astra
- Kimi K3.1 Pro vs Claude Opus 5.5
- Kimi K3.1 Pro vs Gemini 4 Argon
- Kimi K3.1 Pro vs Doubao Seed Evolving
- Kimi K3.1 Pro vs GLM-5.3
Other Moonshot AI models
Frequently asked questions
How good is Kimi K3.1 Pro?
Kimi K3.1 Pro by Moonshot AI ranks 24th of 368 ranked models on the Noometry Index as of November 2026, with a score of 57.8. Its strongest category is writing & preference, where it ranks 1st. API pricing starts at $2 per million input tokens and $10 per million output tokens, with a 1.05M-token context window.
How much does Kimi K3.1 Pro cost?
Kimi K3.1 Pro costs $2 per million input tokens and $10 per million output tokens on Moonshot AI's own API, with cached input at $0.20.
What is Kimi K3.1 Pro's context window?
Kimi K3.1 Pro accepts up to 1.05M tokens of input and can write up to 1.05M tokens in one response.
Is Kimi K3.1 Pro open source?
No. Kimi K3.1 Pro is proprietary and available only through Moonshot AI's API and partner platforms.
What are Kimi K3.1 Pro's strengths and weaknesses?
Relative to other ranked models, Kimi K3.1 Pro places best in writing & preference, coding and lowest in math, reasoning.
What is Kimi K3.1 Pro best at?
Its best category is writing & preference, where it ranks 1st on Noometry.