Kimi K3.1 Pro
Kimi K3.1 ProAlternatives?
CheaperGemini 4 Argonhigh+9%-23%*$1.62Synchronous output stops at 65,536+2
BetterClaude Opus 5.5medium+4%-37%$1.34No forced tool use+5
OpenMiMo v2.6 Prothinking-6%-94%$0.13Pass back reasoning_content+3
CheaperGPT-6 Astrahighsame-18%$1.73Monitoring can return HTTP 403+2CheaperGPT-6.1 Solmaxsame-66%$0.72Remove unsupported parameters+5Gemini 4 Argonhigh+9%-23%*$1.62Synchronous output stops at 65,536+2Claude Opus 5.5high+6%-14%$1.82No forced tool use+5GPT-6 Astrahighsame-18%$1.73Monitoring can return HTTP 403+2GPT-6.1 Solmaxsame-66%$0.72Remove unsupported parameters+5GPT-5.6 Solmax-6%-6%$1.99Claude Opus 5.5medium+4%-37%$1.34No forced tool use+5Gemini 4 Argonhigh+9%-23%*$1.62Synchronous output stops at 65,536+2GPT-6 Astraxhigh+4%+9%$2.31Monitoring can return HTTP 403+2Claude Fable 5.1high+7%+85%$3.91Replace forced tool_choice+5Claude Sonnet 5.5max+5%+158%$5.46No forced tool use+5MiMo v2.6 ProthinkingOpen-6%-94%$0.13Pass back reasoning_content+3Kimi K3maxOpen-11%-5%$2.00Sampling parameters are fixed+3
Step 5 PreviewthinkingOpen-11%-51%$1.03web_search not available · Chat Completions+2
Muse Spark OpenxhighOpen-16%-60%$0.84Reasoning off leaves output unchanged · Self-hosted / llama.cpp+1
DeepSeek V4.1 Flash 1017maxOpen-17%-88%$0.26Pass back reasoning_content · Chat Completions+4Kimi K3maxOpen-11%-5%$2.00Sampling parameters are fixed+3Kimi K2.6thinkingOpen-29%-67%$0.71Context: 1M → 256KKimi K2.7 CodethinkingOpen-33%-74%$0.54Context: 1M → 256K+1Kimi K2.5thinkingOpen-41%—$0.60 / $3Context: 1M → 256KKimi K2 ThinkingthinkingOpen-55%—$0.47 / $2Context: 1M → 256K+1Kimi K2 0711non-thinkingOpen-86%—$0.50 / $2Context: 1M → 128K+2Kimi K2 0905non-thinkingOpen-88%—$0.40 / $2Context: 1M → 256K+1Kimi K3.1 Pro Highspeedn/a—$4 / $20All Moonshot AI models →Benchmarks
in Chat & KnowledgeFAQ
How much does Kimi K3.1 Pro cost?›
$2 per 1M input tokens and $10 per 1M output tokens; cached input $0.20 per 1M. A typical benchmark task costs about $2.11 at default effort.
Is Kimi K3.1 Pro free to use?›
There is no free API; the cheapest paid price is $2 per 1M input tokens.
How good is Kimi K3.1 Pro, and what is it best at?›
#10 of 360 in Chat & Knowledge, #1 of 137 in Coding, #2 of 138 in Agents & Tool Use, #7 of 132 in Vision & Documents. Strongest at: Coding, Reasoning, Long context, Knowledge, Vision.
Is Kimi K3.1 Pro better than GPT-6.1 Sol?›
On Humanity's Last Exam, Kimi K3.1 Pro scores 52.5 vs 52.9 — about the same. It is 192% more expensive per task.
How can I use Kimi K3.1 Pro?›
Through the API of Moonshot AI, Novita.
What is the context window of Kimi K3.1 Pro?›
1M tokens.
When was Kimi K3.1 Pro released? Is there a newer version?›
Released 2026-10-23. It is the current version in its line.
Is Kimi K3.1 Pro open source?›
No, Kimi K3.1 Pro is a closed model available through an API. The closest open-weights option here is MiMo v2.6 Pro.
Can Kimi K3.1 Pro read images?›
It accepts text and images, video as input.
What is Kimi K3.1 Pro?›
Kimi K3.1 Pro is a closed language model from Moonshot AI, released Oct 2026.
What are the best alternatives to Kimi K3.1 Pro?›
Gemini 4 Argon (cheaper), Claude Opus 5.5 (better), MiMo v2.6 Pro (open weights).