Kimi K3
Kimi K3 is worth evaluating for rag, agents, and long context when its provider route and context window match the workload.
Use it for
- Teams evaluating rag, agents, and long context
- Workloads that can use a 1.05m context window
- Buyers comparing 1 tracked provider route
Do not use it for
- Workloads where another current model has stronger sourced task evidence
- Family
- Kimi
- Released
- 2026-07-14
- Context
- 1.05m
- Max output
- 1,048,576
- Parameters
- 2.8T total; 16 of 896 experts active
- Architecture
- Mixture of Experts
- Specialization
- general
- License
- Unknown / UnverifiedCommercial use: unknown
- Weights
- Not released
- Code
- Unknown
Cheapest of 1 route · Moonshot AI Kimi · cache read $0.300
About
Kimi K3 is Moonshot AI's 2.8-trillion-parameter flagship multimodal model for long-horizon coding, knowledge work, deep reasoning, and agentic workflows. It uses Kimi Delta Attention, Attention Residuals, and a sparse MoE design (16 of 896 experts active), supports a 1,048,576-token context window, text/image/video input, always-on reasoning, ToolCalls, strict JSON Schema structured output, automatic context caching, and partial mode through Moonshot's OpenAI-compatible API.
Kimi K3 is a model in the Kimi family. The structured metadata tracks a 1.05m-token context window, multimodal input, reasoning, function calling, tool use, and structured outputs. This page tracks provider routes through Moonshot AI Kimi, with the cheapest tracked route listed at $3 input and $15 output per 1M tokens. Headline tracked benchmarks include Program Bench 77.8, Terminal-Bench 2.1 88.3, and Google-Proof Q&A 93.5.
Top use-case fit: coding, agents, and build tasks
RAG
Included by capability and metadata signals in the decision map.
Agents
Included by capability and metadata signals in the decision map.
Long context
Included by capability and metadata signals in the decision map.
Provider price ladder
Compare API pricing across 1 providers for input and output tokens, batch, and cached reads when available.
| Provider | Input / 1M | Output / 1M | Cache | Route |
|---|---|---|---|---|
| Moonshot AI Kimi | $3.00 | $15.00 | read $0.300 | Serverless |
Capabilities
Benchmark peer barsfor RAG
No task-mapped benchmark peers are available for this model yet.
Benchmark scores(13)
| Benchmark | Score | Version | Source |
|---|---|---|---|
| Program Bench | 77.8 | KimiCode harness; max reasoning effort | https://www.kimi.com/blog/kimi-k3 |
| Terminal-Bench 2.1 | 88.3 | Terminal-Bench 2.1; KimiCode harness; max reasoning effort | https://www.kimi.com/blog/kimi-k3 |
| Google-Proof Q&A | 93.5 | GPQA-Diamond; max reasoning effort | https://www.kimi.com/blog/kimi-k3 |
| Humanity's Last Exam | 43.5 | HLE-Full without tools; max reasoning effort | https://www.kimi.com/blog/kimi-k3 |
| Humanity's Last Exam — With Tools | 56.0 | HLE-Full with tools; max reasoning effort | https://www.kimi.com/blog/kimi-k3 |
| BrowseComp | 91.2 | BrowseComp; 300K-token context compaction; max reasoning effort | https://www.kimi.com/blog/kimi-k3 |
| DeepSearchQA | 95.0 | DeepSearchQA F1; max reasoning effort | https://www.kimi.com/blog/kimi-k3 |
| Toolathlon | 73.2 | Toolathlon-Verified; max reasoning effort | https://www.kimi.com/blog/kimi-k3 |
| MCP-Atlas | 84.2 | 500-task public subset; 100-turn limit; Gemini 3.1 Pro judge; max reasoning effort | https://www.kimi.com/blog/kimi-k3 |
| AutomationBench | 30.8 | 600-task public subset; official GitHub setup; max reasoning effort | https://www.kimi.com/blog/kimi-k3 |
| WorldVQA | 51.0 | WorldVQA ForceAnswer; max reasoning effort; five-run mean | https://www.kimi.com/blog/kimi-k3 |
| MMMU Pro | 81.6 | MMMU-Pro; official protocol; three-run mean; max reasoning effort | https://www.kimi.com/blog/kimi-k3 |
| CharXiv | 84.8 | CharXiv RQ; three-run mean; max reasoning effort | https://www.kimi.com/blog/kimi-k3 |
Migration checks
No linked migration route is available for this model yet.
Frequently asked questions
What is the context window of Kimi K3?
Kimi K3 has a context window of 1.05m tokens.
What is the max output of Kimi K3?
Kimi K3 can generate up to 1,048,576 output tokens.
How much does Kimi K3 cost?
Kimi K3 is available at $3.00/1M input tokens through Moonshot AI Kimi.
When was Kimi K3 released?
Kimi K3 was released on 2026-07-14.
Which providers offer Kimi K3?
Kimi K3 is available from 1 provider: Moonshot AI Kimi.
What benchmarks has Kimi K3 been tested on?
Kimi K3 has been evaluated on 13 benchmarks, including Program Bench, Terminal-Bench 2.1, Google-Proof Q&A, Humanity's Last Exam, Humanity's Last Exam — With Tools.
Cheapest of 1 route · Moonshot AI Kimi · cache read $0.300