Compare / Models
Kimi K3 vs Kimi K3.1 Pro Highspeed
Price, context window and capabilities side by side, read from the same catalog that meters your calls, not from a press release.
Kimi K3 is 1.3x cheaper on input. Kimi K3 is 1.3x cheaper on output. Kimi K3.1 Pro Highspeed holds 1M tokens against 256K.
At a glance
Side by side
Moonshot AI
K3.1 Pro at 2-3x the speed for responsive interactive agents, at twice the price.
Specifications
Every difference we can measure
| Kimi K3 | Kimi K3.1 Pro Highspeed | |
|---|---|---|
| Input price | $3/M | $4/M |
| Output price | $15/M | $20/M |
| Context window | 256K tokens | 1M tokens |
| Vision | No | Yes |
| Tool calling | Yes | Yes |
A row appears only when we hold the fact for both models. Anything the provider has not published is left out rather than guessed, so an empty row is missing data and never a zero.
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FAQ
Frequently asked questions
What is the difference between Kimi K3 and Kimi K3.1 Pro Highspeed?
Kimi K3 is 1.3x cheaper on input. Kimi K3 is 1.3x cheaper on output. Kimi K3.1 Pro Highspeed holds 1M tokens against 256K. Only Kimi K3.1 Pro Highspeed declares vision. Both run on the same endpoint and the same key here, so trying each is a one-line change to the model id.
Which is cheaper, Kimi K3 or Kimi K3.1 Pro Highspeed?
Kimi K3 is, on input tokens. Output usually dominates the bill on generative work, so check the output row above against your own ratio of prompt to completion before deciding.
Can I switch between Kimi K3 and Kimi K3.1 Pro Highspeed without changing my code?
Yes. Both are OpenAI-compatible through one CompanyFabric key, so switching is the model string and nothing else, no second SDK, no second contract, one prepaid balance across both.
Do I have to choose?
No. Send companyfabric/auto and we route each request to the cheapest model that can serve it, which is how most people use both without deciding in advance.
One key. Every model. Exact prices.
Run Kimi K3 and Kimi K3.1 Pro Highspeed on the same key and compare them on your own prompts. Free starter credits included, no subscription required.