Skip to content
ModelCap

Kimi K3

Current board #11Arena #17Official publisher releaseRestricted license

Moonshot AI·moonshotai/kimi-k3

Kimi K3 is ModelCap current-board rank #11 with Index 82.2 (Measured), from the ModelCap Index as of 22 Sept 2026, 02:49 UTC.

Kimi K3 listed OpenRouter input price is $3.00 per 1M tokens and listed output price is $15.00 per 1M tokens, from OpenRouter listed prices as of 22 Sept 2026, 02:49 UTC.

Kimi K3 has a published context limit of 1M tokens in the ModelCap catalogue as of 22 Sept 2026, 02:49 UTC.

Kimi K3 has 20 published OpenRouter serving endpoints, from OpenRouter as of 22 Sept 2026, 02:49 UTC.

Kimi K3 weight access is restricted license, from ModelCap classification of published repository metadata as of 22 Sept 2026, 02:49 UTC.

Snapshot facts · download the public dataset · methodology

ModelCap Index · Current board
82.2#11
Measured · 89% support · score interval 76.5–87.9
Evidence as of 21 Sept 2026, 17:21 UTC
Market Gravity
62.9Decreased by 0.1
Secondary market signal
Input
$3.00
per 1M tokens
Output
$15.00
per 1M tokens
Context
1M
tokens
Providers
20
endpoints
Gateway spend
9.63%
latest · Vercel share

Providers

Uptime measured over the last 30 minutes
ProviderInputOutputContextQuantUptime
InferenceNetfp4Cheapest$1.50$7.501Mfp498.67%
Relacefp4$1.70$8.501Mfp499.42%
Phala$2.07$10.351M97.01%
Sail Researchfp4$2.14$10.761Mfp499.93%
Wafer$2.10$10.951M99.73%
Morph$2.13$11.901M99.93%
Makora$2.55$12.751M96.24%
DigitalOcean$2.55$12.951M94.54%
DeepInfrabf16$2.85$14.251Mbf1698.69%
Chutesmxfp4$3.00$15.001Mmxfp4100.0%
Parasailfp4$3.00$15.001Mfp496.07%
Modalmxfp4$3.00$15.001Mmxfp499.67%
Together$3.00$15.001M99.89%
Fireworks$3.00$15.001M
BaseTenfp8$3.00$15.001Mfp898.67%
Moonshot AImxfp4$3.00$15.001Mmxfp499.41%
Fireworksus$3.30$16.501M
Alibaba$3.45$17.251M100.0%
Fireworksfast$4.50$22.501M99.58%
Morphfast$6.00$22.501M

Hugging Face Inference Providers

Exact repository identity

Provider economics and telemetry published by the Hugging Face Router. These are operational signals, not benchmark results.

ProviderInputOutputContextTTFTThroughputFeatures
deepinfra
live
$2.85$14.251M600 ms45.7 tok/stools · structured
baseten
live
$3.00$15.001M580 ms71.7 tok/stools · structured
fireworks-ai
live
$3.00$15.001M1413 ms41.3 tok/stools · structured
together
live
$3.00$15.001M775 ms66.4 tok/stools
featherless-ai
live

Reasoning efforts

Best supported result can inform ModelCap

Published Max, X-High, High and other configurations for this model. These are sourced scores, not head-to-head essays.

EffortAgent scoreSource rankSampleSource
Max
Kimi K3 (Max)
6.22%
CI 5.66.8%
#89.1M obs
109K sessions
LMArena Agent
Match 100%

Related community configurations

Human preference rating
ConfigurationRatingSource rankVotesSource
Max
kimi-k3-max
1485
CI 1480–1490
#1721KLMArena
Match 100%

Reported evaluation leads (38)

Not independent measurement

Structured rows reported in this exact model repository at the pinned revision below. They are the publisher talking about itself: never measured evidence, never a score input on their own. They remain quarantined until dataset revision, harness, configuration and identity pass ModelCap’s independent admission review.

Dataset / taskMetricValueRevisionProvenance
joelniklaus/LEXam-hard
lexam_hard
29.54
Pinned
1bd50ee3ac80286fed27e5b89f03f4d8b4494244
Reported
Quarantined
cais/hle
hle
56
Unpinned
not published
Reported
Quarantined
crosbylegal/RedlineBench
redline_overall
49.3
Unpinned
not published
Reported
Quarantined
datacurve/deep-swe
deep_swe
67.5
Unpinned
not published
Reported
Quarantined
Delores-Lin/MDPBench
overall
83.6
Unpinned
not published
Reported
Quarantined
Delores-Lin/MDPBench
digital
90.8
Unpinned
not published
Reported
Quarantined
Delores-Lin/MDPBench
photographed
81.2
Unpinned
not published
Reported
Quarantined
Delores-Lin/MDPBench
latin
86.2
Unpinned
not published
Reported
Quarantined
Delores-Lin/MDPBench
de
89.1
Unpinned
not published
Reported
Quarantined
Delores-Lin/MDPBench
en
87.2
Unpinned
not published
Reported
Quarantined
Delores-Lin/MDPBench
es
80.2
Unpinned
not published
Reported
Quarantined
Delores-Lin/MDPBench
fr
80
Unpinned
not published
Reported
Quarantined
Delores-Lin/MDPBench
id
86.9
Unpinned
not published
Reported
Quarantined
Delores-Lin/MDPBench
it
92.7
Unpinned
not published
Reported
Quarantined
Delores-Lin/MDPBench
nl
86
Unpinned
not published
Reported
Quarantined
Delores-Lin/MDPBench
pt
88.9
Unpinned
not published
Reported
Quarantined
Delores-Lin/MDPBench
vi
84.8
Unpinned
not published
Reported
Quarantined
Delores-Lin/MDPBench
non_latin
80.7
Unpinned
not published
Reported
Quarantined
Delores-Lin/MDPBench
ar
77.4
Unpinned
not published
Reported
Quarantined
Delores-Lin/MDPBench
hi
77.5
Unpinned
not published
Reported
Quarantined

Showing 20 of 38 rows.

Other versions (4)

ModelCap Index · Current board

Methodology
82.2
Measured · 6 public benchmark observations across 6 boards
Current board
#11
Public rank basis
Measured (measured)
Index support
88.9% · strong
Index interval
76.5–87.9
Rank posterior
Not available
Top 5 / Top 10 probability
Not available / Not available
Posterior as of
Snapshot timestamp unavailable
Evidence as of
21 Sept 2026, 17:21 UTC
Identity binding
Exact catalogue product · moonshotai/moonshotai/kimi-k3 · aggregates disclosed benchmark configurations · endpoint configuration not claimed · artifact metadata moonshotai/Kimi-K3@f831ab66814297da540d832a5235f8e904f29d06 (not the evaluation revision)
Index observations used
6
Qualified Index evidence point
82.2
Bayesian Evidence Score · measured evidence input only

BES normalizes admitted public benchmark evidence for measured Index rows. Its legacy score and observables prior do not define the public language rank.

Observed capability
82.2
Evidence status
confirmed · 97% mass
General preference
83.9
Coding
84.7
Agents & tools
63.4
Reasoning
57.4
Evidence breadth
100%
Evidence coverage
89%
Market and catalogue signals · secondary, never the language Index rank
Usage (OpenRouter popularity)
49.0
Liquidity (providers × uptime)
98.2
Open reach (HF downloads)
Surface (context / tools / modalities)
100.0
Freshness
77.3
  • · OpenRouter popularity #19
  • · 17 live providers
  • · Catalogue: context 1048576, reasoning, tools, modalities Text/Image/Video
  • · First seen 2026-07-16

These adoption and deployment observations remain context only. They do not change this model's ModelCap Index score or rank.

BES evidence selected · measured input only

The bounded 0–100 capability score blends each source’s competitive placement with its published achievement, then combines capability families. Evidence breadth adds a modest uncertainty adjustment; price and popularity are not part of benchmark-led rank.

Deployment readiness

Metadata index
86.6
strong · 89% metadata coverage
Not capability
Artifact reproducibility
85.0
Access & legal clarity
67.5
Deployability
98.9
Evaluation provenance
89.6

Missing: artifactReproducibility.base-lineage, accessLegalClarity.resolvable-license-terms, evaluationProvenance.evaluation-dataset-revisions.

A metadata completeness and deployability index—not a safety certification, quality grade, or production-readiness claim.

Market activity

Venue coverage
Market Gravity
62.9
OpenRouter weekly popularity
#19 of 322
Vercel token share · 7d
2.80%
Vercel request share · 7d
2.05%
Venue data through
2026-09-22

Market Gravity uses OpenRouter’s full-catalogue popularity order. Sparse Vercel top-ten observations appear only when published and do not affect the score.

Arena preference

Status
Ranked
Source
LMArena
Official rank
#17 of 402
Rating
1484.8
95% confidence interval
1480–1490
Votes
21K
Source published at
13 Sept 2026, 00:00 UTC
Category
overall
Identity match confidence
100%

Market Gravity breakdown

Usage55%
49.0

OpenRouter weekly popularity across the full model catalogue.

Liquidity25%
98.2

Independent providers versus the model's open or closed cohort, weighted by uptime.

Open reach15%
50.0

Hugging Face 30-day downloads for open models; neutral for closed models.

Freshness5%
77.3

Time since first public availability, on a six-month half-life.

Specification

Context window
1M tokens
Max output
944K tokens
Inputs
Text, Image, Video
Outputs
Text
Tokenizer
Other
Cached input tokens
$0.30 / 1M
First seen on OpenRouter
16 Jul 2026

Capabilities

  • Supported: Reasoning
  • Supported: Tool use
  • Supported: Structured output
  • Supported: Response format
  • Not supported: Moderated

Weights & access

Restricted license. Downloadable weights use a model-specific or use-restricted license. Review the linked license before use, redistribution, or commercial deployment.

Access
Restricted license
Licence
kimi-k3
Pinned revision
f831ab668142
Parameters
2779.9B
Architecture
KimiK3ForConditionalGeneration
Model type
kimi_k3
Hugging Face downloads (30d)
1.9M
Downloads (all time)
4.6M
Likes
11K
Repository updated
2 Sept 2026, 02:22 UTC

Compare Kimi K3 with

Pick any model

Benchmark leaderboards featuring Kimi K3

All leaderboards
Public benchmark boards on which Kimi K3 has a published result
LeaderboardScoreSource rankConfigurationPublished
Arena coding leaderboardArena (LMArena)15381530–1547#7 of 397Max13 Sept 2026
LMArena Agent leaderboardLMArena6.2%5.6%–6.8%#8 of 46Max15 Sept 2026
ARC-AGI-2 leaderboardARC Prize Foundation60.4%#57 of 214Max21 Sept 2026
Artificial Analysis Intelligence IndexArtificial Analysis43.6#28 of 151intelligence-index:v4.3:max19 Sept 2026
Humanity's Last Exam (Artificial Analysis run)Artificial Analysis46.9%#25 of 615hle:may-2025:text-only-2158:no-tools:pass-at-1:source-model="Kimi K3 (max)":reasoning=true5 Sept 2026
WildClawBench OpenClaw leaderboardWildClawBench54.5#9 of 34Default20 Jul 2026

Alternatives to Kimi K3, by the numbers

Ranked neighbours

Models within 3 places of #11 on the ModelCap Index.

Cheaper at a similar or higher Index

Index score within 3 points of, or above, this model's, with a lower listed blended price (3:1 input:output).

Other ranked Moonshot AI models

The same publisher's other current models with a public Index position.

Kimi K3: common questions

How does Kimi K3 rank among AI models?

Kimi K3 holds ModelCap Index position #11 of 248 ranked language models as of 22 September 2026, with an Index score of 82.2 (interval 76.5–87.9); evidence: measured. The Index combines public benchmark boards with published uncertainty; the methodology page explains the weighting.

How much does Kimi K3 cost per 1M tokens?

Kimi K3 is listed at $3.00 per 1M input tokens and $15.00 per 1M output tokens as of 22 September 2026; the lowest output price among 17 providers is $7.50 on InferenceNet. Prices come from the OpenRouter catalogue and re-observe on every refresh. For 1,000 requests using 2,000 input and 500 output tokens each, the listed rates imply $13.50 total (2M input + 0.5M output). This excludes caching, batch discounts, prompt-length tiers, tool charges and retries; verify the chosen endpoint's rate and limits before budgeting.

What is the context window of Kimi K3?

Kimi K3 has a published context window of 1M tokens (1,048,576) and a maximum output of 944K tokens. Individual providers can serve less than the published maximum; the providers table lists each endpoint's own limit.

Is Kimi K3 open-weight?

Restricted license (kimi-k3). Downloadable weights use a model-specific or use-restricted license. Review the linked license before use, redistribution, or commercial deployment. The repository is moonshotai/Kimi-K3 on Hugging Face.

Which API providers serve Kimi K3?

17 providers serve Kimi K3 through OpenRouter as of 22 September 2026: InferenceNet, Relace, Phala, Wafer, Morph and Sail Research and 11 more. Each provider's price, context limit, quantization and measured uptime are in the providers table above.

Which benchmarks has Kimi K3 been evaluated on?

Kimi K3 has published results on 6 public boards tracked by ModelCap as of 22 September 2026: Arena coding 1538 (#7 of 397), LMArena Agent 6.2% (#8 of 46), ARC-AGI-2 60.4% (#57 of 214), AA Intelligence Index 43.6 (#28 of 151) and AA Humanity's Last Exam 46.9% (#25 of 615) and more. Each board page ranks every tracked model on that benchmark; the ModelCap Index combines them with published uncertainty.

How does Kimi K3 compare with GPT-5.5?

Kimi K3 ranks #11 (Index 82.2) and GPT-5.5 ranks #12 (Index 80.5) on the ModelCap Index as of 22 September 2026. The head-to-head page lines up their benchmarks, listed prices, context windows and provider counts side by side.

When was Kimi K3 released?

Kimi K3 first appeared in the catalogue on 16 Jul 2026. It is the current version in its family. Rank and price movements since then are recorded on the site's changes feed.