Skip to content
ModelCap

Head-to-head comparison

Gemma 4 31B vs GPT-5.2 Chat

Gemma 4 31B (Google) and GPT-5.2 Chat (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 17 August 2026

As of 17 August 2026, GPT-5.2 Chat holds the stronger ModelCap Index position (#9 vs #30); Gemma 4 31B is 41.2× cheaper per output token ($0.34/1M vs $14.00/1M); Gemma 4 31B offers the longer context window (262K vs 128K tokens); and Gemma 4 31B ships open weights.

Which should you choose?

Choose Gemma 4 31B if…

  • API cost matters — $0.34/1M output tokens against $14.00/1M, about 41.2× cheaper.
  • your workload is prompt-heavy — input tokens cost $0.10/1M against $1.75/1M.
  • you need the longer context window — 262K tokens against 128K.
  • you want to self-host: Gemma 4 31B ships open weights while GPT-5.2 Chat is api only.
  • you want provider choice — 16 listed API providers against 1.
  • you want the more recently listed model — Gemma 4 31B was listed 2 April 2026, GPT-5.2 Chat 10 December 2025.

Choose GPT-5.2 Chat if…

  • you want the stronger overall ModelCap Index position — #9 against #30 (74.9 vs 60.0 points).
  • Arena coding is your yardstick — 1515 against 1499.

Gemma 4 31B vs GPT-5.2 Chat: specs, pricing and context

Specification comparison of Gemma 4 31B and GPT-5.2 Chat
FieldGemma 4 31BGoogleGPT-5.2 ChatOpenAI
ModelCap Index position#30#9
Index score60.074.9
EvidenceMeasuredMeasured
Input price / 1M tokens$0.10$1.75
Output price / 1M tokens$0.34$14.00
Context window262K tokens128K tokens
Max output tokens262K32K
API providers listed161
Weight accessOpen weightsAPI only
Input modalitiesImage, Text, VideoFile, Image, Text
First listed2 April 202610 December 2025
PublisherGoogleOpenAI

Evidence: 4 public benchmark observations across 4 boards · 2 public benchmark observations across 2 boards. Prices are the lowest listed API offer per million tokens observed on the OpenRouter catalogue.

Benchmark scores: Gemma 4 31B vs GPT-5.2 Chat

Public benchmark boards where Gemma 4 31B or GPT-5.2 Chat has a published result
BoardGemma 4 31BGPT-5.2 ChatLeads
Arena codingArena (LMArena)14991483–151415151508–1522GPT-5.2 Chat
LMArena AgentLMArena-18.9%-21.7%–-16.0%—Only one result
Artificial Analysis Intelligence IndexArtificial Analysis29.7intelligence-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.

Gemma 4 31B vs GPT-5.2 Chat: common questions

Is Gemma 4 31B better than GPT-5.2 Chat?

GPT-5.2 Chat ranks higher on the ModelCap Index as of 17 August 2026: #9 against #30. 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 Gemma 4 31B cheaper than GPT-5.2 Chat?

Gemma 4 31B is cheaper on output tokens: $0.34/1M against $14.00/1M. Input tokens are $0.10/1M for Gemma 4 31B and $1.75/1M for GPT-5.2 Chat. Prices are the lowest listed API offer ModelCap observed, in USD per million tokens.

Which has the bigger context window, Gemma 4 31B or GPT-5.2 Chat?

Gemma 4 31B has the larger context window: 262K tokens against 128K.

Which is better for coding, Gemma 4 31B or GPT-5.2 Chat?

Arena coding: Gemma 4 31B 1499, GPT-5.2 Chat 1515 — GPT-5.2 Chat leads.

Are Gemma 4 31B and GPT-5.2 Chat open-weight models?

Gemma 4 31B: Open weights. GPT-5.2 Chat: 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 31B and GPT-5.2 Chat?

ModelCap currently lists 16 API providers for Gemma 4 31B and 1 for GPT-5.2 Chat, from the OpenRouter catalogue snapshot the site serves; each model page lists the providers and their prices.

How current is this Gemma 4 31B vs GPT-5.2 Chat 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.

Explore further