ZMIME
Comparison · 2 models · Updated Oct 4, 2026

Nex-N2-Pro vs Step 3.7 Flash

Step 3.7 Flash comes out ahead, 62 to 53 on our weighted score, and it is the cheaper option too.

  1. Nex AGI

    Nex-N2-Pro

    Released Jun 2, 2026

    53/100
    • ECI—
    • Price$0.50 / $2.50
    • Context262K
    Full specs Remove Nex-N2-Pro
  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 Nex-N2-Pro (53). It leads on price. 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 · Nex-N2-Pro $1.00 per 1M tokens (3:1 blend)
  • Longest contextNex-N2-ProNex-N2-Pro 262,144 · Step 3.7 Flash 256,000 tokens
  • Widest inputsStep 3.7 FlashNex-N2-Pro: Text, Images · 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
MeasureWeightNex-N2-ProStep 3.7 Flash
Price50%5068
Inputs & features30%7070
Context window20%3736
Overall100%53/10062/100

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.

Nex-N2-Pro vs Step 3.7 Flash specifications side by side
SpecificationNex-N2-ProNex AGIStep 3.7 FlashStepFun
Capability
Capabilities Index (ECI)——
ECI rank——
Price per million tokens
Input$0.50$0.185 (best)
Output$2.50$1.11 (best)
Cached input—$0.037
Blended (3:1)$1.00$0.416 (best)
Long-context rateSame rateSame rate
Price sourceMedian of 1 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
VideoNoYes
ReasoningYesYeslow · medium · high
Tool callingYesYes
Structured outputYesNo
Availability
WeightsOpenOpen
API model ID—step-3.7-flash
API providers118 (best)
ReleasedJun 2, 2026May 29, 2026
Knowledge cutoff—Mar 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.

  • Nex-N2-Pro$10.00
  • Step 3.7 Flash$4.07
04 — Questions

Which should you choose?

Which is better: Nex-N2-Pro or Step 3.7 Flash?

Step 3.7 Flash is the better all-round choice, scoring 62/100 against Nex-N2-Pro (53). It leads on price. 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, Nex-N2-Pro 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). Nex-N2-Pro costs $0.50 input / $2.50 output per million tokens (median across 1 API provider). 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 $1.00 for Nex-N2-Pro (2.4× as much).

Which scores higher on benchmarks?

There is no independent benchmark that covers both models yet. Nex-N2-Pro 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 Nex-N2-Pro 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?

Nex-N2-Pro has the largest context window at 262,144 tokens, against 256,000 for Step 3.7 Flash. Maximum output per response: Nex-N2-Pro up to 262,144, Step 3.7 Flash up to 256,000 tokens.

Which can read images, PDFs, audio or video?

Nex-N2-Pro accepts text and images; Step 3.7 Flash accepts text, images and video. Step 3.7 Flash handles the widest range of inputs.

Are any of these open source?

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

Which is newer?

Nex-N2-Pro is the newest, released Jun 2, 2026. Step 3.7 Flash came out May 29, 2026. Knowledge cutoff: 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

Related comparisons