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Van Data Team

Current model · Moonshot Kimi

Kimi K3.1 Pro benchmarks, pricing and specs

Kimi K3.1 Pro is a Moonshot Kimi model released on October 23, 2026 that takes text, image and video input and produces text. It costs $2 per 1M input tokens and $10 per 1M output tokens and accepts up to 1,048,576 tokens of context.

Per 1M input tokens
$2Listed today
Per 1M output tokens
$10Listed today
Context window
1.05M#11 of 66 current models

Data verified October 28, 2026 · Dataset 2026-10-28

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Specs

Key facts

Provider
Moonshot Kimi
Model family
Kimi K3
Release date
October 23, 2026
Status
Current
Access
API only
API model id
kimi-k3.1-pro
Context window
1,048,576 tokens
Max output
Not reported
Input
text, image, video
Output
text
Task families
text, multimodal
Declared capabilities
reasoning, agentic coding, image understanding, video understanding

Charts

Against every current text model

Where Kimi K3.1 Pro lands among the current models of its task, on every independent benchmark, on price and on context.

Where it stands

27 of 51 list a lower price per 1M input tokens. Each bar is the share of current models it beats.

Kimi K3.1 Pro among the current text models, one row per benchmark, price and context window.

Price and context

Price per 1M input tokens

#28of 51

$2 · cheaper than 24%

Price per 1M output tokens

#33of 51

$10 · cheaper than 26%

Context window

#11of 66

1.05M tokens · longer than 65%

Price

Kimi K3.1 Pro pricing

It is the #13 most expensive of 51 current text models priced per 1M input tokens.

UnitPrice (USD)TierAppliesSource
1M input tokens$2standardCurrent
1M output tokens$10standardCurrent
1M input tokens$0.20cachedCurrent
1M input tokens$2cache write 5mCurrent
1M input tokens$4cache write 1hCurrent
1M input tokens$4highspeedCurrent
1M output tokens$20highspeedCurrent

Benchmarks

Independent benchmark results

Scores come from independent evaluators that ran the model themselves, pinned to a dated snapshot. Rank is among current models in the same snapshot. Moonshot Kimi's own launch figures are listed under strengths with the publisher named, because they are not measured the same way.

No independent benchmark has published a result for Kimi K3.1 Pro yet. It is still compared below on price, context and capabilities.

Fit

Strengths, cautions and best uses

Strengths
  • Moonshot's flagship for long-horizon coding and knowledge work: Kimi K3 post-trained with far more compute, a 3T-class model with a 1,048,576-token context and image and video input
  • Cheaper than Kimi K3 at $2 input, $10 output and $0.20 cached input per 1M tokens, against K3's $3 / $15 / $0.30
  • Moonshot reports 65.7% on Terminal-Bench 4.0, against 66.4% for Claude Opus 5.5 and 58.2% for GPT-6 Astra
Cautions
  • Thinking is always on: reasoning effort runs low, high or max, and max is the default
  • The Highspeed endpoint, two to three times faster by Moonshot's account, costs twice as much at $4 input and $20 output per 1M tokens
  • Weights are promised by 4 November 2026 and were not out when this record was made; no independent benchmark score is recorded here yet
Best for
  • Long-horizon coding and agent work at mid-tier prices
  • Long documents, images and video in one 1M-token context

From benchmark to production

Building on Kimi K3.1 Pro?

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Alternatives

Alternatives to Kimi K3.1 Pro

The closest current text models by price. The cheapest model that scores as well or better is listed first; failing that, the cheapest one within 3% of the benchmark's scale.

On score and price

Kimi K3.1 Pro beside the 4 alternatives listed below, on Arena Text and on blended price per 1M tokens.

Kimi K3.1 Pro and its alternatives on score and price.

Arena Text

Measured October 8, 2026, higher is better

Kimi K3.1 Pro
Not scored
Claude Sonnet 5
1,461
Claude Sonnet 5.5
1,476
Gemini 4 Argon
1,525
GPT-4.1
1,415

Blended price per 1M tokens

Listed today, lower is better

Kimi K3.1 Pro
$4
Claude Sonnet 5
$4
Claude Sonnet 5.5
$4
Gemini 4 Argon
$4
GPT-4.1
$3.50

Further reading

More on Kimi K3.1 Pro

Compare Kimi K3.1 Pro with

All model comparisons

Articles about Kimi K3.1 Pro

Other Kimi K3 models

FAQ

Kimi K3.1 Pro FAQ

How much does Kimi K3.1 Pro cost?

Kimi K3.1 Pro costs $2 per 1M input tokens and $10 per 1M output tokens at the standard tier. It is the #13 most expensive of 51 current text models priced per 1M input tokens. Source: Moonshot AI, verified October 28, 2026.

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

Kimi K3.1 Pro accepts up to 1,048,576 tokens of context. That ranks #11 of 66 current text models by context length.

Is Kimi K3.1 Pro open source or API only?

Kimi K3.1 Pro is available through Moonshot Kimi's API only; its weights are not published.

What are the best alternatives to Kimi K3.1 Pro?

The closest current alternatives by price and measured performance are Claude Sonnet 5 (same price per 1M input tokens, $2), Claude Sonnet 5.5 (same price per 1M input tokens, $2), Gemini 4 Argon (same price per 1M input tokens, $2) and GPT-4.1 (same price per 1M input tokens, $2).

Sources

Sources

Cite this page

Van Data Team. "Kimi K3.1 Pro Benchmarks, Pricing and Specs." AI Model Benchmark Dataset 2026-10-28. https://vandatateam.com/ai-model-benchmarks/kimi-k3-1-pro

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Production evaluation

Deciding whether Kimi K3.1 Pro fits your workload?

Public benchmarks narrow the shortlist. We test the finalists on your own tasks, data and cost limits, then build the routing and review controls to run the winner in production.

  • Evaluation cases and acceptance thresholds tied to real work
  • Model routing, fallbacks and cost controls
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