Moonshot AI: Kimi K3.1 Pro Highspeed (Moonshot AI)
Kimi K3.1 Pro Highspeed (Moonshot AI) is a reasoning model from Moonshot AI released on Oct 23, 2026. It reads text and images and writes text, with a 1.05M token context window and up to 1.05M tokens per reply.
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It costs $4 per million input tokens and $20 per million output tokens. Cached input bills at $0.20, 95% less than fresh input.
It supports tool calling, structured JSON output and prompt caching.
5 providers serve it, including Vercel AI Gateway, DevPass (LLM Gateway) and LLM Gateway.
- Modalities
- In / out price
- $4 / $20 per 1M
- Context
- 1.05M
- Max output
- 1.05M
- Released
- Oct 23, 2026
- Knowledge cutoff
- n/a
- Tool calling
- Structured output
- Reasoning
- Prompt caching
- Open weights
- Free to use
Kimi K3.1 Pro Highspeed (Moonshot AI) pricing
USD, as listed on Oct 26, 2026. Most bills are input heavy, so the cached input rate matters as much as the headline price.
| Input | $4 / 1M tokens | |
|---|---|---|
| Output | $20 / 1M tokens | |
| Cached input (read) | $0.20 / 1M tokens | 95% off input |
| Cache write | $4 / 1M tokens |
Kimi K3.1 Pro Highspeed (Moonshot AI) providers
5 providers serve it, including Vercel AI Gateway, DevPass (LLM Gateway) and LLM Gateway. Each host sets its own price and limits, so the cheapest one is not always the one with the longest context.
| Provider | Input /M | Output /M | Cache read /M | Context | Max output |
|---|---|---|---|---|---|
| Vercel AI Gateway | $4 | $20 | $0.20 | 1.05M | 1.05M |
| DevPass (LLM Gateway) | $4 | $20 | $0.20 | 1.05M | 1.05M |
| LLM Gateway | $4 | $20 | $0.20 | 1.05M | 1.05M |
| NanoGPT | $4 | $20 | $0.20 | 1.05M | 1.05M |
| Venice AI | $6 | $30 | $0.60 | 1M | 131K |
What Kimi K3.1 Pro Highspeed (Moonshot AI) costs per month
Pick a workload close to yours or type your own volumes.
Supported request parameters
What you can set when you call Kimi K3.1 Pro Highspeed (Moonshot AI) through an OpenAI compatible API.
- Tools
tools - Structured outputs
structured_outputs - Reasoning
reasoning
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Kimi K3.1 Pro Highspeed (Moonshot AI) questions
How much does the Kimi K3.1 Pro Highspeed (Moonshot AI) API cost?
$4 per million input tokens and $20 per million output tokens, with cached input at $0.20. The estimator on this page turns that into a monthly bill for your own workload.
What is the context window of Kimi K3.1 Pro Highspeed (Moonshot AI)?
1,048,576 tokens of input, and it can write up to 1,048,576 tokens in one reply. As a rough guide, a million tokens is around 750,000 English words.
Which providers serve Kimi K3.1 Pro Highspeed (Moonshot AI)?
5 providers serve it, including Vercel AI Gateway, DevPass (LLM Gateway) and LLM Gateway. Prices differ by host, so the Providers table on this page lists each one with its input and output price.
Does Kimi K3.1 Pro Highspeed (Moonshot AI) support tool calling?
Yes. It accepts tool definitions and can return JSON that matches a schema, which is what an agent needs to call your APIs.
Is Kimi K3.1 Pro Highspeed (Moonshot AI) open source?
No. Moonshot AI serves it through an API only, so you cannot download the weights or host it yourself.
When was Kimi K3.1 Pro Highspeed (Moonshot AI) released?
Oct 23, 2026.
Catalog data from models.dev (MIT licensed), refreshed daily, last on Oct 26, 2026. The summary is written from these facts.