ZMIME
Comparison · 2 models · Updated Oct 4, 2026

Kimi K2.7 Code Highspeed vs Step 3.7 Flash

Step 3.7 Flash comes out ahead, 62 to 44 on our weighted score, and it is the cheaper option too.

  1. 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
  2. Our pick

    StepFun

    Step 3.7 Flash

    Released May 29, 2026

    62/100
    • ECI—
    • Price$0.185 / $1.11
    • Context256K
    Full specs Remove Step 3.7 Flash

  3. Add a model

    Make it a three-way comparison.

01 — Verdict

Step 3.7 Flash is our pick

Step 3.7 Flash is the better all-round choice, scoring 62/100 against Kimi K2.7 Code Highspeed (44). It leads on price. Kimi K2.7 Code Highspeed wins on inputs & features. 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 priceStep 3.7 FlashStep 3.7 Flash $0.416 · Kimi K2.7 Code Highspeed $3.42 per 1M tokens (3:1 blend)
  • Longest contextKimi K2.7 Code HighspeedKimi K2.7 Code Highspeed 262,144 · Step 3.7 Flash 256,000 tokens
  • Widest inputsSame inputsKimi K2.7 Code Highspeed: Text, Images, Video · Step 3.7 Flash: Text, Images, Video
  • Self-hostingAll open weightsEvery model here can be downloaded and run on your own hardware
How the score is built
MeasureWeightKimi K2.7 Code HighspeedStep 3.7 Flash
Price50%2568
Inputs & features30%8070
Context window20%3736
Overall100%44/10062/100

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.

Kimi K2.7 Code Highspeed vs Step 3.7 Flash specifications side by side
SpecificationKimi K2.7 Code HighspeedMoonshot AIStep 3.7 FlashStepFun
Capability
Capabilities Index (ECI)——
ECI rank——
Price per million tokens
Input$1.90$0.185 (best)
Output$8.00$1.11 (best)
Cached input—$0.037
Blended (3:1)$3.42$0.416 (best)
Long-context rateSame rateSame rate
Price sourceMedian of 11 providersOfficial StepFun (Global) API
Limits
Context window262,144 tokens (best)256,000 tokens
Max output262,144 tokens (best)256,000 tokens
Inputs and features
TextYesYes
ImagesYesYes
PDFsNoNo
AudioNoNo
VideoYesYes
ReasoningYesYeslow · medium · high
Tool callingYesYes
Structured outputYesNo
Availability
WeightsOpenOpen
API model ID—step-3.7-flash
API providers1118 (best)
ReleasedJun 12, 2026May 29, 2026
Knowledge cutoffJan 2025Mar 1, 2026
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.

  • Kimi K2.7 Code Highspeed$35.00
  • Step 3.7 Flash$4.07
04 — Questions

Which should you choose?

Which is better: Kimi K2.7 Code Highspeed or Step 3.7 Flash?

Step 3.7 Flash is the better all-round choice, scoring 62/100 against Kimi K2.7 Code Highspeed (44). It leads on price. Kimi K2.7 Code Highspeed wins on inputs & features. 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, Kimi K2.7 Code Highspeed or Step 3.7 Flash?

Step 3.7 Flash is cheaper at $0.185 input / $1.11 output per million tokens (official StepFun (Global) API price). Kimi K2.7 Code Highspeed costs $1.90 input / $8.00 output per million tokens (median across 11 API providers). At a typical mix of three input tokens to one output token, that is $0.416 per million tokens for Step 3.7 Flash versus $3.42 for Kimi K2.7 Code Highspeed (8.2× as much).

Which scores higher on benchmarks?

There is no independent benchmark that covers both models yet. Kimi K2.7 Code Highspeed has not been scored yet and Step 3.7 Flash has not been scored yet.

Which is better for coding?

There are no published SWE-bench Verified results for Kimi K2.7 Code Highspeed and Step 3.7 Flash 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?

Kimi K2.7 Code Highspeed has the largest context window at 262,144 tokens, against 256,000 for Step 3.7 Flash. Maximum output per response: Kimi K2.7 Code Highspeed up to 262,144, Step 3.7 Flash up to 256,000 tokens.

Which can read images, PDFs, audio or video?

Kimi K2.7 Code Highspeed accepts text, images and video; Step 3.7 Flash accepts text, images and video. They handle the same number of input types.

Are any of these open source?

Yes, both publish their weights, so you can self-host them.

Which is newer?

Kimi K2.7 Code Highspeed is the newest, released Jun 12, 2026. Step 3.7 Flash came out May 29, 2026. Knowledge cutoff: Kimi K2.7 Code Highspeed Jan 2025, Step 3.7 Flash Mar 1, 2026.

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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