Kimi K3 Fast

Kimi K3 served on Fireworks' low-latency Fast router, trading a higher token price for faster generation.

kimi-k3-fast
STABLEGet StartedView uptime
1,040,384 context
Released July 16, 2026
Starting at $4.50/M input tokens
Starting at $22.50/M output tokens
Streaming
Vision
Tools
Reasoning
JSON Output
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Select Provider

All Providers for Kimi K3 Fast

LLM Gateway routes requests to the best providers that are able to handle your prompt size and parameters.

Fireworks AI
Context: 1.0M
Input
$4.5
/M tokens
Cache Read
$0.45
/M tokens
Output
$22.5
/M tokens
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Frequently asked questions

What is Kimi K3 Fast?

Kimi K3 served on Fireworks' low-latency Fast router, trading a higher token price for faster generation. You can access it through LLM Gateway's OpenAI-compatible API with automatic provider routing, fallback, and cost analytics.

How much does Kimi K3 Fast cost?

Pricing for Kimi K3 Fast on LLM Gateway starts at $4.50 per million input tokens and $22.50 per million output tokens, depending on the provider. The pricing table above always reflects the current per-provider rates.

What is the context length of Kimi K3 Fast?

Kimi K3 Fast supports a context window of up to 1,040,384 tokens on its largest provider deployment.

Which providers serve Kimi K3 Fast?

Kimi K3 Fast is served by Fireworks AI through LLM Gateway. Requests are automatically routed to the best available provider, with fallback when a provider has issues.

Does Kimi K3 Fast support tool calling and structured outputs?

Yes. Kimi K3 Fast supports both tool (function) calling and structured JSON outputs through LLM Gateway.

When was Kimi K3 Fast released?

Kimi K3 Fast was released on July 16, 2026.