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Head-to-head comparison

gemma 4 12B it vs GPT-5.5 Pro

gemma 4 12B it (Google) 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 9 September 2026

As of 9 September 2026, gemma 4 12B it holds the stronger ModelCap Index position (#44 vs #49); and gemma 4 12B it ships open weights.

Which should you choose?

Choose gemma 4 12B it if…

  • you want the stronger overall ModelCap Index position — #44 against #49 (61.4 vs 59.1 points).
  • you want to self-host: gemma 4 12B it ships open weights while GPT-5.5 Pro is api only.
  • you want the more recently listed model — gemma 4 12B it was listed 23 May 2026, GPT-5.5 Pro 24 April 2026.

Choose GPT-5.5 Pro if…

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

gemma 4 12B it vs GPT-5.5 Pro: specs, pricing and context

Specification comparison of gemma 4 12B it and GPT-5.5 Pro
Fieldgemma 4 12B itGoogleGPT-5.5 ProOpenAI
ModelCap Index position#44#49
Index score61.459.1
EvidenceEstimatedMeasured
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 modalitiesText, Image, AudioFile, Image, Text
First listed23 May 202624 April 2026
PublisherGoogleOpenAI

Evidence: publisher-corpus-prior over 182 held-out anchors (7%); launch card against 3 resolved peers on 6 rows (93%); no cross-lab optimism probe available; shrunk 0.3 up toward the measured corpus · publisher-corpus-prior over 182 held-out anchors (61%); 1 specialist-board observation at 2.1% support (40%); shrunk 14.6 toward the measured corpus. Prices are the lowest listed API offer per million tokens observed on the OpenRouter catalogue.

Benchmark scores: gemma 4 12B it vs GPT-5.5 Pro

Public benchmark boards where gemma 4 12B it or GPT-5.5 Pro has a published result
Boardgemma 4 12B itGPT-5.5 ProLeads
ARC-AGI-2ARC Prize Foundation—84.6%HighOnly 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.

gemma 4 12B it vs GPT-5.5 Pro: common questions

Is gemma 4 12B it better than GPT-5.5 Pro?

gemma 4 12B it ranks higher on the ModelCap Index as of 9 September 2026: #44 against #49. 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. Their published uncertainty intervals overlap, so the rank difference alone does not establish a reliable capability advantage for your workload.

Is gemma 4 12B it 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, gemma 4 12B it or GPT-5.5 Pro?

Both publish a —-token context window.

Which is better for coding, gemma 4 12B it 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 gemma 4 12B it and GPT-5.5 Pro open-weight models?

gemma 4 12B it: 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 gemma 4 12B it and GPT-5.5 Pro?

ModelCap currently lists 0 API providers for gemma 4 12B it 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 gemma 4 12B it vs GPT-5.5 Pro comparison?

Every figure comes from the sealed ModelCap dataset published 9 September 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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