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Comparison · 2 models · Updated Oct 4, 2026

Claude Opus 4.8 vs Kimi K2.7 Code Highspeed

Kimi K2.7 Code Highspeed comes out ahead, 44 to 37 on our weighted score, and it is the cheaper option too.

  1. Anthropic

    Claude Opus 4.8

    Released May 28, 2026

    37/100
    • ECI158.3
    • Price$5.00 / $25.00
    • Context1M
    Full specs Remove Claude Opus 4.8
  2. Our pick

    Moonshot AI

    Kimi K2.7 Code Highspeed

    Released Jun 12, 2026

    44/100
    • ECI—
    • Price$1.90 / $8.00
    • Context262K
    Full specs Remove Kimi K2.7 Code Highspeed

  3. Add a model

    Make it a three-way comparison.

01 — Verdict

Kimi K2.7 Code Highspeed is our pick

Kimi K2.7 Code Highspeed is the better all-round choice, scoring 44/100 against Claude Opus 4.8 (37). It leads on price. Claude Opus 4.8 wins on context window. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.

  • CapabilityNot enough dataNo independent benchmark covers every model here yet
  • Lowest priceKimi K2.7 Code HighspeedKimi K2.7 Code Highspeed $3.42 · Claude Opus 4.8 $10.00 per 1M tokens (3:1 blend)
  • Longest contextClaude Opus 4.8Claude Opus 4.8 1,000,000 · Kimi K2.7 Code Highspeed 262,144 tokens
  • Widest inputsSame inputsClaude Opus 4.8: Text, Images, PDFs · Kimi K2.7 Code Highspeed: Text, Images, Video
  • Self-hostingKimi K2.7 Code HighspeedPublishes downloadable weights
How the score is built
MeasureWeightClaude Opus 4.8Kimi K2.7 Code Highspeed
Price50%225
Inputs & features30%8080
Context window20%6037
Overall100%37/10044/100

Left out because at least one model lacks the data: capability. The remaining weights were rescaled.

02 — Side by side

Every spec in one table

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

Claude Opus 4.8 vs Kimi K2.7 Code Highspeed specifications side by side
SpecificationClaude Opus 4.8AnthropicKimi K2.7 Code HighspeedMoonshot AI
Capability
Capabilities Index (ECI)158.3—
ECI rank#12 of 148—
GPQA DiamondGraduate-level science questions91.0%—
FrontierMath Tiers 1–3Research-level mathematics80.0%—
OTIS Mock AIME 2024–2025Competition mathematics98.3%—
SimpleQA VerifiedShort factual questions53.0%—
Price per million tokens
Input$5.00$1.90 (best)
Output$25.00$8.00 (best)
Cached input$0.50—
Blended (3:1)$10.00$3.42 (best)
Long-context rateSame rateSame rate
Price sourceOfficial Anthropic APIMedian of 11 providers
Limits
Context window1,000,000 tokens (best)262,144 tokens
Max output128,000 tokens262,144 tokens (best)
Inputs and features
TextYesYes
ImagesYesYes
PDFsYesNo
AudioNoNo
VideoNoYes
ReasoningYeslow · medium · high · xhigh · maxYes
Tool callingYesYes
Structured outputYesYes
Availability
WeightsProprietaryOpen
API model IDclaude-opus-4-8—
API providers45 (best)11
ReleasedMay 28, 2026Jun 12, 2026
Knowledge cutoffJan 2026Jan 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 Opus 4.8$100.00
  • Kimi K2.7 Code Highspeed$35.00
04 — Questions

Which should you choose?

Which is better: Claude Opus 4.8 or Kimi K2.7 Code Highspeed?

Kimi K2.7 Code Highspeed is the better all-round choice, scoring 44/100 against Claude Opus 4.8 (37). It leads on price. Claude Opus 4.8 wins on context window. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.

Which is cheaper, Claude Opus 4.8 or Kimi K2.7 Code Highspeed?

Kimi K2.7 Code Highspeed is cheaper at $1.90 input / $8.00 output per million tokens (median across 11 API providers). Claude Opus 4.8 costs $5.00 input / $25.00 output per million tokens (official Anthropic API price). At a typical mix of three input tokens to one output token, that is $3.42 per million tokens for Kimi K2.7 Code Highspeed versus $10.00 for Claude Opus 4.8 (2.9× as much).

Which scores higher on benchmarks?

There is no independent benchmark that covers both models yet. Claude Opus 4.8 has an ECI of 158.3 and Kimi K2.7 Code Highspeed has not been scored yet.

Which is better for coding?

There are no published SWE-bench Verified results for Claude Opus 4.8 and Kimi K2.7 Code Highspeed yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. Both support tool calling for agent workflows.

Which has the bigger context window?

Claude Opus 4.8 has the largest context window at 1,000,000 tokens, against 262,144 for Kimi K2.7 Code Highspeed. Maximum output per response: Claude Opus 4.8 up to 128,000, Kimi K2.7 Code Highspeed up to 262,144 tokens.

Which can read images, PDFs, audio or video?

Claude Opus 4.8 accepts text, images and PDFs; Kimi K2.7 Code Highspeed accepts text, images and video. They handle the same number of input types.

Are any of these open source?

Kimi K2.7 Code Highspeed publishes its weights and can be self-hosted; Claude Opus 4.8 is proprietary.

Which is newer?

Kimi K2.7 Code Highspeed is the newest, released Jun 12, 2026. Claude Opus 4.8 came out May 28, 2026. Knowledge cutoff: Claude Opus 4.8 Jan 2026, Kimi K2.7 Code Highspeed 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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