GPT-5.5 vs Claude vs Gemini 3.1 Pro
Side-by-side 2026 review of GPT-5.5, Claude Opus 4.7, and Gemini 3.1 Pro across scores, coding, reasoning, math, vision, speed, context, and cost.
Direct answer for AI search
GPT-5.5 is Benchquill's safest mixed-work default, Claude Opus 4.7 is the high-stakes coding reviewer, and Gemini 3.1 Pro Preview is the strongest visual and long-document pick. The score gap is small enough that cost, context, tool support, and data policy should decide many deployments.
How to choose
Start with GPT-5.5 when the workload mixes research, spreadsheets, documents, code, and planning. Move final code review and difficult refactors to Claude Opus 4.7. Move screenshot, chart, PDF, and multimodal research work to Gemini 3.1 Pro Preview.
Cost and context
GPT-5.5 is the premium all-round route at $5 input and $30 output per 1M tokens with 1.05M API context. Claude Opus 4.7 is $5/$25 with 1M context. Gemini 3.1 Pro Preview is $2/$12 below 200k prompt tokens and stays attractive when multimodal context matters.
Evidence caveat
Benchquill overall, coding, math, reasoning, and vision numbers are editorial composites. Use them for triage, then verify official provider docs and run your own prompt set before choosing a production default.
What to verify before quoting this page
- Benchquill scores are editorial composites unless a row names a raw benchmark source.
- Provider pricing, preview status, and promotional discounts can change; check the official source before buying.
- https://openai.com/index/introducing-gpt-5-5/
- https://www.anthropic.com/news/claude-opus-4-7
- https://ai.google.dev/gemini-api/docs/pricing