// moonshotai
Kimi K3.1 Pro
moonshotai/kimi-k3.1-pro
Kimi K3.1 Pro costs $2.00 per 1M input tokens and $10.00 per 1M output tokens with a 1.0M-token context window.
A reasoning, tool-calling model from moonshotai, released Oct 23, 2026. LiveBench hasn't published a run for it, so this page carries measured price and specs only — no benchmark numbers.
- Input / 1M
- $2.00
- Output / 1M
- $10.00
- Context
- 1.0M
- LiveBench overall
- Not evaluated
Specs and pricing
| Input price USD per 1M prompt tokens | $2.00 |
|---|---|
| Output price USD per 1M completion tokens, reasoning included | $10.00 |
| Blended price 3:1 input:output — #57 most expensive of 356 listed models | $4.00 |
| Cached input read Blank means not priced separately — not free | $0.200 |
| Cache write | — |
| Context window | 1,048,576 tokens |
| Max output | 943,718 tokens |
| Input modalities | text, image, video |
| Tool calling | Yes |
| Extended reasoning | Yes |
| Knowledge cutoff | — |
| Listed | Oct 23, 2026 |
What Kimi K3.1 Pro costs to run
Monthly list cost across five workload shapes, using the published cached-input rate where there is one. A floor, not a quote — batch discounts and cache writes aren't included.
| Workload | Per month |
|---|---|
| Support chatbot 1.2K in / 400 out × 200K requests | $1,150/mo |
| RAG assistant 8K in / 600 out × 100K requests | $1,480/mo |
| Coding agent 40K in / 4K out × 20K requests | $1,392/mo |
| Document extraction 20K in / 1.5K out × 50K requests | $2,660/mo |
| Bulk classification 500 in / 20 out × 5M requests | $5,100/mo |
Kimi K3.1 Pro FAQ
How much does Kimi K3.1 Pro cost?
Kimi K3.1 Pro lists at $2.00 per 1M input tokens and $10.00 per 1M output tokens, with cached input reads at $0.200 per 1M. A RAG assistant handling 100K requests a month (8K tokens in, 600 out) comes to about $1,480 at list price.
What is the context window of Kimi K3.1 Pro?
Kimi K3.1 Pro accepts up to 1,048,576 tokens of context and can return up to 943,718 output tokens per response.
Does Kimi K3.1 Pro support tool calling?
Yes — Kimi K3.1 Pro supports tool (function) calling and exposes extended reasoning. It accepts text, image, video input.
How does Kimi K3.1 Pro score on benchmarks?
LiveBench has not published a run for Kimi K3.1 Pro yet. Until it does, compare it on price and specs, or run your own evaluation on your own tasks.
What is the API model ID for Kimi K3.1 Pro?
On OpenRouter the model ID is "moonshotai/kimi-k3.1-pro". It was listed on Oct 23, 2026.
More from moonshotai
How these numbers are produced
- Price and specs — provider list data from OpenRouter, refreshed every 15 minutes. “Blended” is a 3:1 input:output mix.
- Scores and ranks — LiveBench release —. Ranks count only models that have a published run; a blank means “not evaluated”, never “bad”.
- Cost per point — the measured dollars LiveBench spent on the run, divided by the score it earned.
Published benchmarks rank models on someone else's tasks. Before committing, see LLM & agent evaluation for building an eval on your own.