Context
1.0M
Max output
—
Input / 1M
$2.00
Output / 1M
$10.00
Cached / 1M
$0.20
Cutoff
Jan 2026
About this model
Kimi K3.1 Pro is Moonshot AI's flagship 3T-class open-weight model and the first in the K3.1 series. A post-trained version of Kimi K3 with substantially larger post-training compute, it offers native visual understanding, a 1M-token context window, always-on thinking with configurable reasoning effort (low, high, max), and substantial gains in coding, 3D creation, financial research and agentic work.
Best suited for
- Frontier intelligence and complex reasoning
- Software engineering and agentic coding
- 3D creation and CAD workflows
- Financial research and analysis
- Long-context document analysis (1M tokens)
- Multimodal tasks with native visual understanding
Built-in tools
Hosted by the gateway — enable them per request without wiring your own endpoint.
Capabilities
Vision
Accepts images alongside text in the same message.
Tools
Native function calling, so agents can invoke your endpoints.
System prompt
Honours a dedicated system role, separate from the user turn.
Supported parameters
additional_parametersUse this model
OpenAI-SDK compatible, with gateway fallback and routing across providers.
Other Moonshot models
| Model | Context | Max output | Input | Output | Capabilities |
|---|---|---|---|---|---|
| kimi-k3.1-pro-highspeed Chat | 1.0M | — | $4.00 | $20.00 | Vision, Tools, System prompt |
| kimi-k2.7-code-highspeed Chat | 262K | 262K | $1.90 | $8.00 | Vision, Files, Tools, System prompt |
| kimi-k2.7-code Chat | 262K | 262K | $0.95 | $4.00 | Vision, Files, Tools, System prompt |
| kimi-k3 Chat | 1.0M | 1.0M | $3.00 | $15.00 | Vision, Tools, System prompt |
| kimi-k2.6 Chat | 262K | 262K | $0.95 | $4.00 | Vision, Files, Tools, System prompt |
Pricing & provider details
Moonshot
moonshot/kimi-k3.1-pro
- Input · per 1M
- $2.00
- Output · per 1M
- $10.00
- Cached input · per 1M
- $0.20
- Context window
- 1,048,576 tokens
- Max output
- —
- Knowledge cutoff
- Jan 2026
- Auto-router
- Not supported
Start building today
Route kimi-k3.1-pro — and every other model in the catalogue — through one endpoint, with failover built in.