Kimi K3.1 Pro pricing and limits: what each path costs
Kimi K3.1 Pro costs $2.00 per million input tokens and $10.00 per million output on the API, against $3.00 and $15.00 for Kimi K3. Plans explained.
On this page
What does Kimi K3.1 Pro cost on the API?How is Kimi K3.1 Pro different from Kimi K3 on price?Can you use Kimi K3.1 Pro without paying?Why do the balances not carry over?How we checkedKimi K3.1 Pro costs $2.00 per million input tokens and $10.00 per million output tokens on the Moonshot API, which is cheaper than the older Kimi K3 at $3.00 and $15.00. Moonshot launched it on October 23, 2026 on Kimi.ai, Kimi Work, Kimi Code and the Kimi API.
What does Kimi K3.1 Pro cost on the API?
Kimi K3.1 Pro API rates are $2.00 per million input tokens and $10.00 per million output tokens, according to the Kimi K3.1 Pro pricing page, checked October 24, 2026. The same page lists a 1,048,576-token context window.
Prompt caching has its own rates on that page:
- Cached input: $0.20 per million tokens
- Cache write, 5 minute: $2.00 per million tokens
- Cache write, 1 hour: $4.00 per million tokens
Kimi K3.1 Pro Highspeed is the faster version. Moonshot's launch post says it runs at 2 to 3 times the speed of K3.1 Pro. It is priced at $4.00 input and $20.00 output per million tokens.
Moonshot pricing page, rates checked October 24, 2026
How is Kimi K3.1 Pro different from Kimi K3 on price?
Kimi K3.1 Pro is $1.00 cheaper per million input tokens and $5.00 cheaper per million output tokens than Kimi K3, based on the Moonshot pricing table checked October 24, 2026. K3 is listed at $3.00 input and $15.00 output.
The third-party site orcarouter.ai worked out one example from those rates. A job with 1 million input tokens and 200,000 output tokens comes to $4.00 on K3.1 Pro and $6.00 on Kimi K3.
Moonshot also reports gains on its own tests, all taken from its launch post:
- Kimi Code Bench 3.0 Long-horizon: 61.2% for K3.1 Pro, 55.95% for K3
- Kimi Hallu Bench Hard: an 8.3% claim-level hallucination rate, down from 23.4% for K3
- Terminal-Bench 4.0: 65.7% for K3.1 Pro, set beside the 66.4% Moonshot cites for Claude Opus 5.5 and 58.2% for GPT-6 Astra
These are Moonshot's numbers, not an independent test.
Can you use Kimi K3.1 Pro without paying?
Moonshot's pricing page lists a Free membership with limited K3.1 Pro usage on Kimi on the web and Kimi Work, checked October 24, 2026. The API is separate: the quickstart says K3.1 Pro unlocks after a successful top-up of at least $1 (Kimi API docs).
Moonshot's pricing page lists two memberships, both with annual billing:
- Membership Plus: $15 per month effective
- Membership Pro: $31 per month effective, and it includes K3.1 Pro Highspeed on the web app, Kimi Work and Kimi Code
Kimi Work on desktop needs version 3.1.0 or later to use K3.1 Pro, per the launch post.
Why do the balances not carry over?
Kimi API Open Platform, Kimi Code and Kimi Membership balances and API keys are not interchangeable, according to the Kimi troubleshooting guide. Moonshot says the full model weights will be released by November 4, 2026. The launch post gives no other detail on that release.
If you are weighing other launches this week, we also covered GPT-6.1 Terra for everyday tasks, which OpenAI released on October 26.
How we checked
Prices come from Moonshot's Kimi K3.1 Pro pricing page, checked October 24, 2026, plus the launch post and the API docs listed above. Divux gathered the figures on October 27, 2026. Rates can change, so confirm them on the pricing page before you build anything on them.
To get live data like this inside your AI assistant, add https://mcp.divux.si to Claude, ChatGPT, Grok or Muse.