Kimi K3 Fast
Kimi K3 Fast is Moonshot AI (Kimi)'s language model with a 1.0M context window and up to 131K output tokens, starting at $4.50 / 1M input and $22.50 / 1M output. A speed-optimized variant of Moonshot AI's Kimi K3 large language model, tuned for lower-latency responses.
| Specifications | |
|---|---|
moonshot-kimi-k3-fast | |
| Language | |
| Active | |
| Moonshot AI (Kimi) | |
| 1.0M tokens | |
| 131K tokens | |
| Image | |
| Text | |
| default | |
Capabilities
Input1/5
Text·
Image✓
Audio·
Video·
PDF·
Output1/5
Text✓
Image·
Audio·
Video·
Embedding·
Capabilities3/13
Reasoning✓
Adaptive Reasoning·
Function Calling✓
Parallel Function Calling·
Structured Outputs✓
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·
Pricing by Provider
US Dollar ($)
Per 1M tokens
| Provider | Standard | ||
|---|---|---|---|
| Input $ / 1M | Output $ / 1M | Cache Read $ / 1M | |
| $4.50 | $22.50 | $0.45 | |
Cost Calculator
US Dollar ($)
Preset:
Versions
| Version | Released | Context | Input / 1M | Output / 1M | Status |
|---|---|---|---|---|---|
| Kimi K3 | 1.0M | $0.730 | $12.50 | Available | |
| Kimi K3 Fast | — | 1.0M | $4.50 | $22.50 | Current |
| Kimi K3 Batch | — | 1.0M | — | — | Available |
| Kimi K3 Coding | — | 1.0M | $0.440 | $1.61 | Available |
| Kimi K3 P | — | — | — | — | Available |
| Kimi K3 US | — | 1.0M | $4.50 | $22.50 | Available |
| Kimi K2.7 Code HighSpeed | 262K | $1.90 | $8.00 | Available | |
| Kimi K2.7 Code | 262K | $0.671 | $3.35 | Deprecated | |
| Kimi K2 Thinking Turbo | 262K | — | — | Deprecated | |
| Kimi K2 Turbo | 256K | — | — | Available | |
| Kimi K2.5 Non-Reasoning | — | — | — | — | Available |