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ModelCap

Kimi K2 Thinking

Arena #118Official publisher releaseRestricted license7d #66 → #67

Moonshot AI·#67 of 352 on the current board·cheaper than #63 GLM 5V Turbo

Kimi K2 Thinking is a language model from Moonshot AI. It ranks #67 of 352 on ModelCap's current board, with an Index score of 63.6, measured on 2 public benchmarks. Its score range of 58.6–68.6 spans positions #48–#88. It is listed at $0.60 per million input tokens and $2.50 per million output tokens from one provider. It reads up to 262K tokens of context, and its weights are downloadable under a use-restricted licence.

Figures as of 6 Nov 2026, 13:52 UTC · download the public dataset · methodology

ModelCap Index · Current board
63.6#67
Measured on 2 public benchmarks · range 58.6–68.6
Evidence as of 28 Oct 2026, 00:00 UTC
Market Gravity
20.3Decreased by 0.5
Secondary market signal
Input
$0.60
per 1M tokens
Output
$2.50
per 1M tokens
Context
262K
tokens
Providers
1
endpoint

Providers

Uptime measured over the last 30 minutes
ProviderInputOutputContextQuantUptime
Novitabf16$0.60$2.50262Kbf16100.0%

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.

Related community configurations

Human preference rating
ConfigurationRatingSource rankVotesSource
Turbo
Kimi K2 Thinking Turbo
1430
CI 1427–1433
#11863KLMArena
Match 99%

Reported evaluation leads (6)

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
cais/hle
hle
—44.9
Unpinned
not published
Reported
Quarantined
cais/hle
hle
—23.9
Unpinned
not published
Reported
Quarantined
google/physical-engineerings-last-exam
overall-score
—5.7
Unpinned
not published
Reported
Quarantined
harborframework/terminal-bench-2.0
terminalbench_2
—35.7
Unpinned
not published
Reported
Quarantined
Idavidrein/gpqa
diamond
—84.5
Unpinned
not published
Reported
Quarantined
SWE-bench/SWE-bench_Verified
swe_bench_%_resolved
—71.3
Unpinned
not published
Reported
Quarantined

ModelCap Index · Current board

Methodology
63.6
Measured on 2 public benchmarks
Current board
#67 of 352
Score range
58.6–68.6
Rank range
#48–#88
Evidence as of
28 Oct 2026, 00:00 UTC
Benchmarks used
Arena Coding, Arena Overall
Technical details
Public rank basis
Measured (measured)
Evidence label
Measured · 2 public benchmark observations across 2 boards
Index support
63.0% · strong
Identity binding
Exact catalogue product · moonshotai/moonshotai/kimi-k2-thinking · aggregates disclosed benchmark configurations · endpoint configuration not claimed · artifact metadata moonshotai/Kimi-K2-Thinking@a51ccc050d73dab088bf7b0e2dd9b30ae85a4e55 (not the evaluation revision)
Index observations used
2
Qualified Index evidence point
63.6
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
63.6
Evidence status
confirmed · 77% mass
General preference
63.3
Coding
65.6
Agents & tools
—
Reasoning
—
Evidence breadth
92%
Evidence coverage
63%
Market and catalogue signals · secondary, never the language Index rank
Usage (OpenRouter popularity)
5.4
Liquidity (providers × uptime)
34.4
Open reach (HF downloads)
—
Surface (context / tools / modalities)
75.3
Freshness
24.9
  • · OpenRouter popularity #248
  • · 1 live provider
  • · Catalogue: context 262144, reasoning, tools
  • · First seen 2025-11-06

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
73.8
partial · 89% metadata coverage
Not capability
Artifact reproducibility
85.0
Access & legal clarity
67.5
Deployability
80.0
Evaluation provenance
54.0

Not yet published: the base model it derives from, a link to the licence terms, pinned evaluation dataset versions.

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

Market activity

Venue coverage
Market Gravity
20.3
OpenRouter weekly popularity
#248 of 339

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
#118 of 419
Rating
1430.0
95% confidence interval
1427–1433
Votes
63K
Source published at
28 Oct 2026, 00:00 UTC
Category
overall
Identity match confidence
99%

Market Gravity breakdown

Usage55%
5.4

OpenRouter weekly popularity across the full model catalogue.

Liquidity25%
34.4

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%
24.9

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

Specification

Model ID
moonshotai/kimi-k2-thinking
Context window
262K tokens
Declared output cap
98K tokens

OpenRouter catalogue or provider-endpoint declaration. Limits can vary by provider and prompt length; a model-wide maximum has not been independently verified. OpenRouter metadata

Inputs
Text
Outputs
Text
Tokenizer
Other
Cached input tokens
$0.15 / 1M
First seen on OpenRouter
6 Nov 2025

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
Pinned revision
a51ccc050d73
Parameters
1026.4B
Architecture
DeepseekV3ForCausalLM
Model type
kimi_k2
Hugging Face downloads (30d)
53K
Downloads (all time)
2.0M
Likes
2K
Repository updated
30 Jan 2026, 04:49 UTC

Compare Kimi K2 Thinking with

Pick any model

Benchmark leaderboards featuring Kimi K2 Thinking

All leaderboards
Public benchmark boards on which Kimi K2 Thinking has a published result
LeaderboardScoreSource rankConfigurationPublished
Arena text leaderboardArena (LMArena)14301427–1433#118 of 419Turbo28 Oct 2026
Arena coding leaderboardArena (LMArena)14861481–1492#105 of 414Turbo28 Oct 2026
SWE-bench leaderboardSWE-bench (Princeton / SWE-agent team)63.4%#23 of 47Thinking10 Dec 2025

Alternatives to Kimi K2 Thinking, by the numbers

Ranked neighbours

Models within 3 places of #67 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 K2 Thinking: common questions

How does Kimi K2 Thinking rank among AI models?

Kimi K2 Thinking holds ModelCap Index position #67 of 352 ranked language models as of 6 November 2026, with an Index score of 63.6 (interval 58.6–68.6); evidence: measured. The Index combines public benchmark boards with published uncertainty; the methodology page explains the weighting.

How much does Kimi K2 Thinking cost per 1M tokens?

Kimi K2 Thinking is listed at $0.60 per 1M input tokens and $2.50 per 1M output tokens as of 6 November 2026. 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 $2.45 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 K2 Thinking?

Kimi K2 Thinking has a published context window of 262K tokens (262,144). The snapshot lists a 98,304 token catalogue-declared route output cap. OpenRouter catalogue or provider-endpoint declaration. Limits can vary by provider and prompt length; a model-wide maximum has not been independently verified. The providers table lists each endpoint's context limit.

Is Kimi K2 Thinking open-weight?

Restricted license (modified-mit). 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-K2-Thinking on Hugging Face.

Which API providers serve Kimi K2 Thinking?

One provider serves Kimi K2 Thinking through OpenRouter as of 6 November 2026: Novita. Each provider's price, context limit, quantization and measured uptime are in the providers table above.

Which benchmarks has Kimi K2 Thinking been evaluated on?

Kimi K2 Thinking has published results on 3 public boards tracked by ModelCap as of 6 November 2026: Arena text 1430 (#118 of 419), Arena coding 1486 (#105 of 414) and SWE-bench 63.4% (#23 of 47). Each board page ranks every tracked model on that benchmark. The ModelCap Index scores the results its methodology admits, with published uncertainty, and shows reference boards without scoring them.

How does Kimi K2 Thinking compare with Kimi K3?

Kimi K2 Thinking ranks #67 (Index 63.6) and Kimi K3 ranks #11 (Index 80.8) on the ModelCap Index as of 6 November 2026. The head-to-head page lines up their benchmarks, listed prices, context windows and provider counts side by side.

When was Kimi K2 Thinking released?

Kimi K2 Thinking first appeared in the catalogue on 6 Nov 2025. It is the current version in its family. Rank and price movements since then are recorded on the site's changes feed.