GPT 5.6 Sol vs Claude Opus 4.8 vs Gemini 3.1 Pro
The big three, in aligned columns. Each column carries the model's capability index, named benchmarks, specs, and list prices; the output band runs the same prompt across all three so you can judge tone and reasoning yourself.Last reviewed 2026-07-17.
GPT 5.6 Sol vs Claude Opus 4.8 vs Gemini 3.1 Pro
OpenAI's GPT-5.6 flagship — built for complex reasoning, agentic coding, and long-running professional work.
Anthropic's most capable Opus yet, built for long-horizon autonomous agents and frontier coding.
Google's frontier model with a large leap in core reasoning.
No captured outputs for these models yet.
Frequently asked
Which of GPT 5.6 Sol, Claude Opus 4.8, and Gemini 3.1 Pro is the cheapest?
Gemini 3.1 Pro has the lowest blended list price. Per 1M tokens: GPT 5.6 Sol at $5.00 in / $30.00 out; Claude Opus 4.8 at $5.00 in / $25.00 out; Gemini 3.1 Pro at $2.00 in / $12.00 out.
Which of GPT 5.6 Sol, Claude Opus 4.8, and Gemini 3.1 Pro has the largest context window?
GPT 5.6 Sol leads with 1.1M tokens. The other two: Claude Opus 4.8 at 1M, Gemini 3.1 Pro at 1M.
Do GPT 5.6 Sol, Claude Opus 4.8, and Gemini 3.1 Pro support image input?
Yes, all three accept images.
Where can I run GPT 5.6 Sol, Claude Opus 4.8, and Gemini 3.1 Pro side by side?
This idapt comparison runs all three in aligned columns: the same prompt, plus benchmarks, specs, and prices per model. Open any model in chat from its column to keep working with it.