ZMIME
Comparison · 2 models · Updated Oct 4, 2026

Claude Sonnet 4.6 vs Kimi K2.7 Code

Too close to call on our weighted score (Kimi K2.7 Code 64, Claude Sonnet 4.6 62). The right pick depends on what you value most.

  1. Anthropic

    Claude Sonnet 4.6

    Released Feb 17, 2026

    62/100
    • ECI152.3
    • Price$3.00 / $15.00
    • Context1M
    Full specs Remove Claude Sonnet 4.6

  2. Moonshot AI

    Kimi K2.7 Code

    Released Jun 12, 2026

    64/100
    • ECI150.0
    • Price$0.95 / $4.00
    • Context262K
    Full specs Remove Kimi K2.7 Code

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01 — Verdict

Too close to call

It is close. Our weighted score puts them within 3 points (Kimi K2.7 Code 64/100, Claude Sonnet 4.6 62/100), so choose by what matters most for your work: Claude Sonnet 4.6 for raw capability and Kimi K2.7 Code on price. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.

  • CapabilityClaude Sonnet 4.6Capabilities Index (ECI): Claude Sonnet 4.6 152.3 · Kimi K2.7 Code 150.0
  • Lowest priceKimi K2.7 CodeKimi K2.7 Code $1.71 · Claude Sonnet 4.6 $6.00 per 1M tokens (3:1 blend)
  • Longest contextClaude Sonnet 4.6Claude Sonnet 4.6 1,000,000 · Kimi K2.7 Code 262,144 tokens
  • Widest inputsSame inputsClaude Sonnet 4.6: Text, Images, PDFs · Kimi K2.7 Code: Text, Images, Video
  • Self-hostingKimi K2.7 CodePublishes downloadable weights
How the score is built
MeasureWeightClaude Sonnet 4.6Kimi K2.7 Code
CapabilityCapabilities Index (ECI)50%8178
Price25%1339
Inputs & features15%8080
Context window10%6037
Overall100%62/10064/100
02 — Side by side

Every spec in one table

Highlighted cells lead their row. Dashes mean the data is not published.

Claude Sonnet 4.6 vs Kimi K2.7 Code specifications side by side
SpecificationClaude Sonnet 4.6AnthropicKimi K2.7 CodeMoonshot AI
Capability
Capabilities Index (ECI)152.3 (best)150.0
ECI rank#40 of 148 (best)#49 of 148
GPQA DiamondGraduate-level science questions87.4%87.9% (best)
FrontierMath Tiers 1–3Research-level mathematics—54.0%
OTIS Mock AIME 2024–2025Competition mathematics85.8%95.6% (best)
SWE-bench VerifiedFixing real GitHub issues75.2%—
SimpleQA VerifiedShort factual questions35.5%36.5% (best)
Price per million tokens
Input$3.00$0.95 (best)
Output$15.00$4.00 (best)
Cached input$0.30$0.19 (best)
Blended (3:1)$6.00$1.71 (best)
Long-context rateSame rateSame rate
Price sourceOfficial Anthropic APIOfficial Moonshot AI API
Limits
Context window1,000,000 tokens (best)262,144 tokens
Max output64,000 tokens262,144 tokens (best)
Inputs and features
TextYesYes
ImagesYesYes
PDFsYesNo
AudioNoNo
VideoNoYes
ReasoningYeslow · medium · high · maxYes
Tool callingYesYes
Structured outputYesYes
Availability
WeightsProprietaryOpen
API model IDclaude-sonnet-4-6kimi-k2.7-code
API providers4151 (best)
ReleasedFeb 17, 2026Jun 12, 2026
Knowledge cutoffAug 31, 2025Jan 2025
03 — Cost

What would a month cost?

Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.

  • Claude Sonnet 4.6$60.00
  • Kimi K2.7 Code$17.50
04 — Questions

Which should you choose?

Which is better: Claude Sonnet 4.6 or Kimi K2.7 Code?

It is close. Our weighted score puts them within 3 points (Kimi K2.7 Code 64/100, Claude Sonnet 4.6 62/100), so choose by what matters most for your work: Claude Sonnet 4.6 for raw capability and Kimi K2.7 Code on price. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.

Which is cheaper, Claude Sonnet 4.6 or Kimi K2.7 Code?

Kimi K2.7 Code is cheaper at $0.95 input / $4.00 output per million tokens (official Moonshot AI API price). Claude Sonnet 4.6 costs $3.00 input / $15.00 output per million tokens (official Anthropic API price). At a typical mix of three input tokens to one output token, that is $1.71 per million tokens for Kimi K2.7 Code versus $6.00 for Claude Sonnet 4.6 (3.5× as much).

Which scores higher on benchmarks?

Claude Sonnet 4.6 scores higher on the Capabilities Index (ECI): Claude Sonnet 4.6 152.3 (#40 of 148) and Kimi K2.7 Code 150.0 (#49 of 148). The confidence ranges of the top two overlap (149.6–154.7 vs 148.1–151.8), so treat the gap as small. On individual benchmarks: GPQA Diamond — Kimi K2.7 Code 87.9%, Claude Sonnet 4.6 87.4%; OTIS Mock AIME 2024–2025 — Kimi K2.7 Code 95.6%, Claude Sonnet 4.6 85.8%; SimpleQA Verified — Kimi K2.7 Code 36.5%, Claude Sonnet 4.6 35.5%.

Which is better for coding?

There are no published SWE-bench Verified results for Kimi K2.7 Code yet, so there is no like-for-like coding score. On overall capability, Claude Sonnet 4.6 leads, which tends to carry over to coding, but test on your own codebase. Both support tool calling for agent workflows.

Which has the bigger context window?

Claude Sonnet 4.6 has the largest context window at 1,000,000 tokens, against 262,144 for Kimi K2.7 Code. Maximum output per response: Claude Sonnet 4.6 up to 64,000, Kimi K2.7 Code up to 262,144 tokens.

Which can read images, PDFs, audio or video?

Claude Sonnet 4.6 accepts text, images and PDFs; Kimi K2.7 Code accepts text, images and video. They handle the same number of input types.

Are any of these open source?

Kimi K2.7 Code publishes its weights and can be self-hosted; Claude Sonnet 4.6 is proprietary.

Which is newer?

Kimi K2.7 Code is the newest, released Jun 12, 2026. Claude Sonnet 4.6 came out Feb 17, 2026. Knowledge cutoff: Claude Sonnet 4.6 Aug 31, 2025, Kimi K2.7 Code Jan 2025.

How do you decide the winner?

Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Oct 4, 2026.

05 — Keep comparing

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