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Head-to-head comparison

G9v3 39A5B vs GPT-5.5 Pro

G9v3 39A5B (Ai9stars) and GPT-5.5 Pro (OpenAI) 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 18 August 2026

As of 18 August 2026, G9v3 39A5B holds the stronger ModelCap Index position (#62 vs #75); and G9v3 39A5B ships open weights.

Which should you choose?

Choose G9v3 39A5B if…

  • you want the stronger overall ModelCap Index position — #62 against #75 (42.0 vs 35.8 points).
  • you want to self-host: G9v3 39A5B ships open weights while GPT-5.5 Pro is api only.
  • you want the more recently listed model — G9v3 39A5B was listed 21 July 2026, GPT-5.5 Pro 24 April 2026.

Choose GPT-5.5 Pro if…

  • you want provider choice — 1 listed API providers against 0.

G9v3 39A5B vs GPT-5.5 Pro: specs, pricing and context

Specification comparison of G9v3 39A5B and GPT-5.5 Pro
FieldG9v3 39A5BAi9starsGPT-5.5 ProOpenAI
ModelCap Index position#62#75
Index score42.035.8
EvidenceMeasuredMeasured
Input price / 1M tokensUnlisted$30.00
Output price / 1M tokensUnlisted$180
Context window— tokens1M tokens
Max output tokens—128K
API providers listed01
Weight accessOpen weightsAPI only
Input modalitiesTextFile, Image, Text
First listed21 July 202624 April 2026
PublisherAi9starsOpenAI

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 GPT-5.5 Pro

Public benchmark boards where G9v3 39A5B or GPT-5.5 Pro has a published result
BoardG9v3 39A5BGPT-5.5 ProLeads
ARC-AGI-2ARC Prize Foundation—84.6%HighOnly one result
Artificial Analysis Intelligence IndexArtificial Analysis31.6intelligence-index—Only one result

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 GPT-5.5 Pro: common questions

Is G9v3 39A5B better than GPT-5.5 Pro?

G9v3 39A5B ranks higher on the ModelCap Index as of 18 August 2026: #62 against #75. 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 GPT-5.5 Pro?

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 GPT-5.5 Pro?

Both publish a —-token context window.

Which is better for coding, G9v3 39A5B or GPT-5.5 Pro?

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 GPT-5.5 Pro open-weight models?

G9v3 39A5B: Open weights. GPT-5.5 Pro: API only. 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 GPT-5.5 Pro?

ModelCap currently lists 0 API providers for G9v3 39A5B and 1 for GPT-5.5 Pro, from the OpenRouter catalogue snapshot the site serves; each model page lists the providers and their prices.

How current is this G9v3 39A5B vs GPT-5.5 Pro comparison?

Every figure comes from the sealed ModelCap dataset published 18 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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