Step 3.7 Flash vs Kimi K2.7 Code Highspeed
Step 3.7 Flash comes out ahead, 62 to 44 on our weighted score, and it is the cheaper option too.
- Our pick
StepFunStep 3.7 Flash
62/100- ECI—
- Price$0.185 / $1.11
- Context256K
Moonshot AIKimi K2.7 Code Highspeed
44/100- ECI—
- Price$1.90 / $8.00
- Context262K
Add a model
Make it a three-way comparison.
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 inputsStep 3.7 Flash: Text, Images, Video · Kimi K2.7 Code Highspeed: Text, Images, Video
- Self-hostingAll open weightsEvery model here can be downloaded and run on your own hardware
| Measure | Weight | Step 3.7 Flash | Kimi K2.7 Code Highspeed |
|---|---|---|---|
| Price | 50% | 68 | 25 |
| Inputs & features | 30% | 70 | 80 |
| Context window | 20% | 36 | 37 |
| Overall | 100% | 62/100 | 44/100 |
Left out because at least one model lacks the data: capability. The remaining weights were rescaled.
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | Step 3.7 FlashStepFun | Kimi K2.7 Code HighspeedMoonshot AI |
|---|---|---|
| Capability | ||
| Capabilities Index (ECI) | — | — |
| ECI rank | — | — |
| Price per million tokens | ||
| Input | $0.185 (best) | $1.90 |
| Output | $1.11 (best) | $8.00 |
| Cached input | $0.037 | — |
| Blended (3:1) | $0.416 (best) | $3.42 |
| Long-context rate | Same rate | Same rate |
| Price source | Official StepFun (Global) API | Median of 11 providers |
| Limits | ||
| Context window | 256,000 tokens | 262,144 tokens (best) |
| Max output | 256,000 tokens | 262,144 tokens (best) |
| Inputs and features | ||
| Text | Yes | Yes |
| Images | Yes | Yes |
| PDFs | No | No |
| Audio | No | No |
| Video | Yes | Yes |
| Reasoning | Yeslow · medium · high | Yes |
| Tool calling | Yes | Yes |
| Structured output | No | Yes |
| Availability | ||
| Weights | Open | Open |
| API model ID | step-3.7-flash | — |
| API providers | 18 (best) | 11 |
| Released | May 29, 2026 | Jun 12, 2026 |
| Knowledge cutoff | Mar 1, 2026 | Jan 2025 |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- Step 3.7 Flash$4.07
- Kimi K2.7 Code Highspeed$35.00
Which should you choose?
Which is better: Step 3.7 Flash or Kimi K2.7 Code Highspeed?
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, Step 3.7 Flash or Kimi K2.7 Code Highspeed?
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. Step 3.7 Flash has not been scored yet 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 Step 3.7 Flash 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?
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: Step 3.7 Flash up to 256,000, Kimi K2.7 Code Highspeed up to 262,144 tokens.
Which can read images, PDFs, audio or video?
Step 3.7 Flash accepts text, images and video; Kimi K2.7 Code Highspeed 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: Step 3.7 Flash Mar 1, 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.
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