MoonshotAI: Kimi K3.1 Pro
by Moonshot AItext+image+video->text2 endpoints
Neura Intelligence Index
88.4/ 100
Rank
#21—
Confidence
mediumBenchmarks
6(15% coverage)
Overview
Kimi K3.1 Pro is Moonshot AI's flagship open-weight multimodal reasoning model and a post-trained successor to Kimi K3, with a 1M-token context window. It is built for long-horizon coding, 3D creation, financial research, and end-to-end agentic knowledge work, with native image and video understanding.
Capabilities
Text generation
Image understanding
Video understanding
Tool use / Function calling
Structured output
Extended reasoning
Prompt caching
Long context
Top-P sampling
Stop sequences
Deterministic seed
Log probabilities
Modalities
Input
TextImageVideo
Output
Text
Technical Specifications
Context Window
1.0M tokens
Max Output
943.7K tokens
Tokenizer
Other
Uptime (24h)
10000.0%
License
unknownOpen Weights
Country
🇨🇳CN
Release Date
October 23, 20262w
Supported Parameters
frequency_penaltyinclude_reasoninglogit_biaslogprobsmax_tokensmin_ppresence_penaltyreasoningreasoning_effortrepetition_penaltyresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_ktop_logprobstop_p
Benchmark Performance
reasoning
| Benchmark | Score | Source |
|---|---|---|
| GPQA Diamond | 94.2 | verified |
| Humanity's Last Exam | 51.1 | verified |
multimodal
| Benchmark | Score | Source |
|---|---|---|
| CharXiv Reasoning | 89 | verified |
| MMMU-Pro | 84.1 | verified |
agent
| Benchmark | Score | Source |
|---|---|---|
| BrowseComp | 92.1 | verified |
| APEX Agents | 67.2 | verified |
Performance Over Time
Pricing
Per 1M tokens
Input$2.00
Output$10.00
Cache read$0.20
Added
October 23, 2026
Last synced 11/7/2026