Model comparison

Claude Opus 5.5 vs GPT-6 Sol

Compare pricing, context windows and capabilities from OpenRouter. Open either model’s page to check availability and try it online.

anthropicClaude Opus 5.5newanthropic/claude-opus-5.5openaiGPT-6 Solnewopenai/gpt-6-sol

Input price /M$4.00$1.004× cheaper

Output price /M$20.00$5.004× cheaper

Cache read /M$0.20$0.102× cheaper

Context window1M1.1M

Catalog date22 Sept 202622 Sept 2026

What the same turn costs

Estimates from published token rates — stated token counts, not measurements.

Quick answer2K tokens in, 600 outClaude Opus 5.5$0.02GPT-6 Sol$0.00504× cheaper

10-slide deck build60K tokens in, 9K outClaude Opus 5.5$0.42GPT-6 Sol$0.1054× cheaper

150-page PDF read200K tokens in, 4K outClaude Opus 5.5$0.88GPT-6 Sol$0.224× cheaper

Capabilities

Bothtool-usevisionreasoning

Claude Opus 5.5: text, image, file → text · GPT-6 Sol: file, image, text → text

Which model should you use?

Start with the token cost for your workload, the context you need, and supported input types. A lower price or larger context window does not establish better answer quality.

To compare answers, open each model in a separate chat and use the same prompt. Token tables use published specs and estimates; any measured AA results above are a separate benchmark.

Try Claude Opus 5.5 — pricing and availability Try GPT-6 Sol — pricing and availability