LLM Comparison
Gemma 4 31B vs GPT-5.5 Pro
Side-by-side specs, pricing & capabilities · Updated October 2026
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2/6 modelsSame tier:
| Organization | ||
| OpenTools Score | 41 | 95 0.9 |
| Family | Gemma | GPT |
| Status | Current | Current |
| Release Date | Apr 2026 | Apr 2026 |
| Context Window | 262K tokens | 1.1M tokens |
| Input Price | — | $30.00/M tokens |
| Output Price | — | $180.00/M tokens |
| Pricing Notes | Free tier available on OpenRouter with rate limits | No cached input discount. Long context (>272K tokens): 2x input, 1.5x output. Batch API: 50% discount. Regional processing: 10% uplift. |
| Capabilities | textvisionvideocode | textvisioncodetool-useextended-thinkingweb-search |
| Training Cutoff | — | Dec 01, 2025 |
| Max Output | 33K tokens | 128K tokens |
| API Identifier | google/gemma-4-31b-it:free | openai/gpt-5.5-pro |
| Benchmarks | ||
| Artificial Analysis Intelligence Index v4.3 | 15.4157artificial-analysis | — |
| GPQA Diamond | 85.6566artificial-analysis | — |
| SciCode | 45.4861artificial-analysis | — |
| Terminal-Bench 2.1 | 43.4457artificial-analysis | — |
| FrontierMath Tier 4 | — | 39.6openai |
| FrontierMath Tier 1-3 | — | 52.4openai |
| HLE (with tools) | — | 57.2openai |
| HLE (no tools) | — | 43.1openai |
| BrowseComp | — | 90.1openai |
| GeneBench | — | 33.2openai |
| GDPval | — | 82.3openai |
| Investment Banking Modeling | — | 88.6openai |
| View Gemma 4 31B | View GPT-5.5 Pro | |
Gemma 4 31B
Gemma 4 31B is a multimodal llm from Google. Supports up to 262,144 token context window. Available free with rate limits on OpenRouter.
OpenAI
GPT-5.5 Pro
GPT-5.5 Pro uses more compute to think harder and provide consistently better answers than GPT-5.5. Designed for the toughest problems, some requests may take several minutes. It excels at FrontierMath Tier 4 (39.6%) and BrowseComp (90.1%), offering the highest intelligence available from OpenAI at a premium price point.
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