Kyma APIKyma API
Moonshot

Moonshot

Kimi K3.1 Pro

Moonshot's first flagship of the K3.1 series, a post-trained successor to Kimi K3: a 3T-class multimodal reasoning model with major gains in coding, 3D creation and financial modelling. 1M context, image input.

Modalities

Text+Image → Text

Below release

Not established

Weights

Not established

Where it sits in the catalogue Kyma measures

Every number against every text model Kyma prices per token — a stated rule, not a chosen line-up.

Price · input#63/84

$2.70

output $13.50 · cached $0.27

median $1.013 · best $0.0494

Price · output#64/83

$13.50

per 1M tokens generated

median $3.645 · best $0.218

Availability · 30d#1/55

100%

30 observations since 2026-10-25

median 100.0% · best 100.0%

Throughput#17/23

39 tok/s

probe median, one fixed prompt

median 46.1 tok/s · best 160.1 tok/s

Response time#19/23

3.34 s

probe median, to a complete answer

median 1.33 s · best 0.46 s

Context

1.05M

max output 943,718

published by Moonshot, not measured here

Tick above each rail is this model, below it the other 83. Dashed rule is the field median, solid is its best. Better is left; the axis stops at the 90th percentile, so a few models sit past its right edge.

Usage

How much this model is actually called here.

Rank

#90

of 112 active models

Tokens served

7.7K

all-time

Platform share

0.0%

of all tokens

Pricing

Pay per token. Cached input bills at this model’s own cached rate, listed below.

$2.70 /1M input$13.50 /1M output
Hobby10 req/day · 2K in / 500 out
~$3.65/mo
Production1,000 req/day · 2K in / 500 out
~$365/mo
Scale20,000 req/day · 2K in / 500 out
~$7,290/mo
+ Estimate your workload
1,000
2,000
500
30%

Estimated monthly cost

$321

$10.69 / day on Kimi K3.1 Pro

Same workload on:

Kimi K3$509+59%
Kimi K2.7 Code$132-59%

Estimates use list pricing with cached input at this model's own cached rate. Actual bills depend on real token counts, and every response includes its exact cost.

How it compares

Against the peers people actually weigh it against.

SpecKimi K3.1 ProKimi K3Kimi K2.7 Code
Input /1M$2.70$3.768$1.009
Output /1M$13.50$18.837$4.774
Context1M1M262K
ToolsYesYesYes
ReasoningYesYesYes
Throughput39 tok/s

Quick start

Up and running in under two minutes.

  1. 1

    Create an API key

    Sign up and grab a key from the dashboard. Kimi K3.1 Pro needs a top-up — the signup credit covers the free tier.

    Get API key →
  2. 2

    Make your first request

    Drop in your key and send a chat completion — fully OpenAI-compatible.

    curl https://kymaapi.com/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "kimi-k3.1-pro",
    "messages": [
      {"role": "user", "content": "Explain prompt caching in one paragraph."}
    ]
  }'
  3. 3

    Stream responses

    Add "stream": true to receive tokens as they arrive.

    curl https://kymaapi.com/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "kimi-k3.1-pro",
    "stream": true,
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

FAQ

Common questions about this model.

What is the context window of Kimi K3.1 Pro?

Kimi K3.1 Pro has a 1M-token context window — roughly 1542 pages of text in a single request.

How much does the Kimi K3.1 Pro API cost?

$2.70 per 1M input tokens and $13.50 per 1M output tokens, with cached input at $0.27/1M — 90% off the input rate on repeated prompt prefixes. No subscription; you pay only for what you use.

Does Kimi K3.1 Pro support function calling?

Yes — Kimi K3.1 Pro supports tool/function calling and structured outputs (JSON mode), so it works with agent frameworks out of the box.

Are the weights for Kimi K3.1 Pro publicly available?

Kyma cannot say. We could not establish it from Moonshot's own material — neither a published checkpoint under Moonshot's own account, nor a statement from Moonshot that the weights are withheld. So we publish "not established" and make no claim in either direction. Treat that as Kyma declining to guess, not as evidence about Moonshot: the honest answer to a question nobody sourced is that nobody sourced it.

Is Kimi K3.1 Pro ever served below the precision its creator released it at?

Kyma cannot say, and the reason runs one step deeper: we could not even establish whether Moonshot publishes Kimi K3.1 Pro's weights, so there may be no released checkpoint to compare a route against at all. We publish "not established" rather than reading a low format as a downgrade: on several models in this catalogue a low format is exactly how the creator ships it.

How do I use Kimi K3.1 Pro?

Kyma is OpenAI-compatible: point your SDK's base URL at https://kymaapi.com/v1, use your Kyma API key, and set the model to kimi-k3.1-pro. Signing up is free, but this model needs a top-up: the $0.50 signup credit covers the free tier only.

Needs a top-up — the signup credit covers the free tier.Create account →

More models by Moonshot

ModelContextInputOutput
MoonshotKimi K31M$3.768$18.837
MoonshotKimi K2.7 Code262K$1.009$4.774
MoonshotKimi K2.6262K$0.7856$3.667