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Head-to-head comparison

G9v3 39A5B vs Step 3.7 Flash

G9v3 39A5B (Ai9stars) and Step 3.7 Flash (StepFun) compared on the ModelCap Index, API price, context window, provider availability, weight access and every public benchmark board they share. Figures are the same ones shown on the live rankings; nothing here is a hidden score.

Snapshot as of 17 August 2026

As of 17 August 2026, G9v3 39A5B holds the stronger ModelCap Index position (#63 vs #66).

Which should you choose?

Choose G9v3 39A5B if…

  • you want the stronger overall ModelCap Index position — #63 against #66 (42.0 vs 39.6 points).
  • Artificial Analysis Intelligence Index is your yardstick — 31.6 against 30.9.
  • you want the more recently listed model — G9v3 39A5B was listed 21 July 2026, Step 3.7 Flash 28 May 2026.

Choose Step 3.7 Flash if…

  • you want provider choice — 3 listed API providers against 0.

G9v3 39A5B vs Step 3.7 Flash: specs, pricing and context

Specification comparison of G9v3 39A5B and Step 3.7 Flash
FieldG9v3 39A5BAi9starsStep 3.7 FlashStepFun
ModelCap Index position#63#66
Index score42.039.6
EvidenceMeasuredMeasured
Input price / 1M tokensUnlisted$0.20
Output price / 1M tokensUnlisted$1.15
Context window— tokens262K tokens
Max output tokens—256K
API providers listed03
Weight accessOpen weightsOpen weights
Input modalitiesTextText, Image, Video
First listed21 July 202628 May 2026
PublisherAi9starsStepFun

Evidence: 1 public benchmark observation across 1 board · 1 public benchmark observation across 1 board. Prices are the lowest listed API offer per million tokens observed on the OpenRouter catalogue.

Benchmark scores: G9v3 39A5B vs Step 3.7 Flash

Public benchmark boards where G9v3 39A5B or Step 3.7 Flash has a published result
BoardG9v3 39A5BStep 3.7 FlashLeads
Artificial Analysis Intelligence IndexArtificial Analysis31.6intelligence-index30.9intelligence-indexG9v3 39A5B

Scores are the sources' own published figures for each model's best evaluated configuration; ModelCap never re-runs a benchmark.

Want a different pairing? Open the interactive comparison tool to swap either model for any current ranked language model.

G9v3 39A5B vs Step 3.7 Flash: common questions

Is G9v3 39A5B better than Step 3.7 Flash?

G9v3 39A5B ranks higher on the ModelCap Index as of 17 August 2026: #63 against #66. That is a capability ranking built from public benchmark evidence with published uncertainty; whether it is "better" for you also depends on price, context and where you can run it.

Is G9v3 39A5B cheaper than Step 3.7 Flash?

At least one of the two has no listed API price on ModelCap right now, so no price comparison is made.

Which has the bigger context window, G9v3 39A5B or Step 3.7 Flash?

Both publish a —-token context window.

Which is better for coding, G9v3 39A5B or Step 3.7 Flash?

The two models do not share a coding benchmark board on ModelCap yet, so no head-to-head coding score is published; the ModelCap Index position is the closest overall signal.

Are G9v3 39A5B and Step 3.7 Flash open-weight models?

G9v3 39A5B: Open weights. Step 3.7 Flash: Open weights. Open weights mean the checkpoint can be downloaded and self-hosted under its licence; API-only models are available solely through hosted endpoints.

Where can I run G9v3 39A5B and Step 3.7 Flash?

ModelCap currently lists 0 API providers for G9v3 39A5B and 3 for Step 3.7 Flash, from the OpenRouter catalogue snapshot the site serves; each model page lists the providers and their prices.

How current is this G9v3 39A5B vs Step 3.7 Flash comparison?

Every figure comes from the sealed ModelCap dataset published 17 August 2026; the page re-renders within a minute of each data refresh, and the ModelCap Index positions are the same ones shown on the live rankings.

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