Gemma 4 31B vs GPT-5.5
At a Glance
| Compare |  Gemma 4 31BGoogle DeepMind |  GPT-5.5OpenAI |
|---|---|---|
| Intelligence, Cost, and Efficiency | ||
| IntelligenceHigher is better · MM Intelligence v2.5 | UnrankedNot in the 46-model eligible cohort | #7 of 4683.9 score · 3/3 sources · complete |
| CostLower is better · Published-token output estimate | UnrankedNot in the 44-model eligible cohort | #38 of 44$0.341 per LiveBench case |
| EfficiencyHigher is better · MM Efficiency v1.5 | UnrankedNot in the 38-model eligible cohort | #18 of 3853.4 score · 3/3 sources · complete |
| Pricing and Limits | ||
| Input priceFrom · USD / 1M tokens | $0.090Openrouter ↗ · Sep 22, 2026 | $5.00Openai ↗ · Sep 3, 2026 |
| Output priceFrom · USD / 1M tokens | $0.34Openrouter ↗ · Sep 22, 2026 | $30.00Openai ↗ · Sep 3, 2026 |
| Context windowMaximum documented tokens | 262K | 1,050K |
| Model facts checked | Sep 3, 2026View model evidence → | Sep 3, 2026View model evidence → |
Token prices are the lowest available sourced USD rates; input and output may use different providers. Cost ranking estimates output spend on LiveBench, not a full request bill. Ranking methodology →
Available Benchmarks
| Benchmark | Gemma 4 31B | GPT-5.5 |
|---|---|---|
| LMArena Document Arenadocument-2026-09-13-d25aabda0010 · arena_rating · leader | 1,424.5196% of row best · rating · gemma-4-31b; 95% CI [1416.71159012, 1432.31286462]; votes 12326; rank 35 | 1,484.48100% of row best · rating · gpt-5.5-high; 95% CI [1478.10008380, 1490.85597001]; votes 20944; rank 9 |
| LMArena Text Arenatext-2026-09-13-d25aabda0010 · arena_rating · leader | 1,441.6898% of row best · rating · gemma-4-31b; 95% CI [1434.13929794, 1449.22204224]; votes 5894; rank 64 | 1,465.59100% of row best · rating · gpt-5.5; 95% CI [1461.82849712, 1469.35015015]; votes 66317; rank 31 |
| LMArena Vision Arenavision-2026-09-13-d25aabda0010 · arena_rating · leader | 1,275.9899% of row best · rating · gemma-4-31b; 95% CI [1269.84273447, 1282.11308989]; votes 35713; rank 33 | 1,294.19100% of row best · rating · gpt-5.5-high; 95% CI [1287.85384790, 1300.52893287]; votes 21960; rank 20 |
| Overall ResultCounted from the protocol-matched rows above | 0 benchmark winsNo overall winner | 3 benchmark winsNo overall winner |
Third-party benchmark Only like-for-like primary-publisher results are shown; raw scores, relative scores, configuration, and token spend remain visible.
Side-by-Side Facts
| Field | Gemma 4 31B | GPT-5.5 |
|---|---|---|
| Developer | Google DeepMind | OpenAI |
| Family | Gemma 4 | Gpt 5 5 |
| Model | Gemma 4 31B | GPT-5.5 |
| Version | Gemma 4 31B | GPT-5.5 |
| Lifecycle | active | active |
| Released | 2026-03-11 | 2026-04-23 |
| Knowledge cutoff | Unknown | 2025-12-01 |
| Input modalities | Text, Image | Text, Image |
| Output modalities | Text | Text |
| Context window | 262K | 1,050K |
| Total parameters | 31B | Unknown |
| Active parameters | Unknown | Unknown |
| License | apache-2.0 | Unknown |
| Open weights | Yes | No |
| API available | Yes | Yes |
| Self-hostable | Yes | No |
| Provider access | Cerebras (Standard), Deepinfra (Standard), Google Gemini (Standard), Openrouter (Standard), Together Ai (Standard) | Openai (Standard), Openrouter (Standard) |
| Capabilities | chat, generation, reasoning, structured_outputs, tools | chat, generation, reasoning, structured_outputs, tools |
Gemma 4 31B Capabilities
GPT-5.5 Capabilities
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Primary Evidence
Sources and Freshness
Questions
Gemma 4 31B vs GPT-5.5 FAQs
Is Gemma 4 31B or GPT-5.5 better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Gemma 4 31B and GPT-5.5, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Gemma 4 31B or GPT-5.5?+
Gemma 4 31B is $0.090 and GPT-5.5 is $5.00 per million tokens, so Gemma 4 31B is cheaper on this metric. Gemma 4 31B is $0.34 and GPT-5.5 is $30.00 per million tokens, so Gemma 4 31B is cheaper on this metric.
Which has a larger context window, Gemma 4 31B or GPT-5.5?+
GPT-5.5 has the larger sourced context window. Gemma 4 31B supports 262K and GPT-5.5 supports 1,050K.
Which performs better in benchmarks, Gemma 4 31B or GPT-5.5?+
There is no overall benchmark winner: An overall winner requires at least two decisive benchmarks from at least two original publishers.
Can Gemma 4 31B or GPT-5.5 be self-hosted?+
Gemma 4 31B is the only model in this pair currently marked as self-hostable. Gemma 4 31B is open weight; GPT-5.5 is not marked open weight.
Can Gemma 4 31B and GPT-5.5 understand images?+
Gemma 4 31B is documented with image input; GPT-5.5 is documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Gemma 4 31B or GPT-5.5?+
Neither has a larger sourced maximum output. Gemma 4 31B is — and GPT-5.5 is 128K.
Do Gemma 4 31B and GPT-5.5 support reasoning and tool use?+
Gemma 4 31B: reasoning, tool calling, and image input. GPT-5.5: reasoning, tool calling, and image input. Feature support does not establish relative quality.
Which is available from more inference providers, Gemma 4 31B or GPT-5.5?+
Gemma 4 31B has 5 sourced provider routes; GPT-5.5 has 2, so Gemma 4 31B has broader tracked availability.
Which offers better value, Gemma 4 31B or GPT-5.5?+
There is no universal value winner. Compare the input and output prices above with the matched benchmark result for your workload: cheaper tokens can be offset by different quality, token usage, latency, or provider availability.