Claude Opus 4.7 vs GPT-5.5
Claude Opus 4.7 and GPT-5.5 are both current production-tier models. GPT-5.5 leads on multilingual.
Specs side by side
| Metric | Anthropic Claude Opus 4.7 | OpenAI GPT-5.5 |
|---|---|---|
| Input price (per 1M) | $5 | $5 |
| Output price (per 1M) | $25 | $30 |
| Context window | 1M tokens | 1.1M tokens |
| Speed tier | slow | balanced |
| Open weights | No | No |
| EU region | Yes | Yes |
| Free tier | No | No |
| Prompt caching | Yes | Yes |
| Vision input | Yes | Yes |
| Extended thinking | Yes | Yes |
When to choose each
Choose Claude Opus 4.7 if…
- Claude Opus 4.7 is in the same tier as GPT-5.5 — pick by provider preference or API ecosystem
Choose GPT-5.5 if…
- You need realtime speech-to-speech
- Multilingual is central to your workload
Benchmark delta
Claude Opus 4.7 leads on
Claude Opus 4.7 has no meaningful benchmark lead in this pair.
GPT-5.5 leads on
- Multilingual
FAQ — Claude Opus 4.7 vs GPT-5.5
Claude Opus 4.7 vs GPT-5.5 — which is better?
Claude Opus 4.7 and GPT-5.5 are both current production-tier models. GPT-5.5 leads on multilingual. The right pick depends on your use case — see "When to choose each" above for a data-driven decision.
How does Claude Opus 4.7 pricing compare to GPT-5.5?
Claude Opus 4.7 costs $5 / $25 per 1M vs GPT-5.5 at $5 / $30 per 1M. Claude Opus 4.7 is cheaper on output tokens by roughly 20%. Both support prompt caching, which reduces effective cost by 80-90% on repeat system prompts.
Does Claude Opus 4.7 or GPT-5.5 have the bigger context window?
GPT-5.5 has a 1.1M-token context window — 1× the 1M context of Claude Opus 4.7. Enough for entire codebases, books, or multi-document RAG.
Is there a free tier for Claude Opus 4.7 or GPT-5.5?
Claude Opus 4.7: no — Free via Claude.ai web chat; API requires paid credits. GPT-5.5: no — Paid-only — no free API tier; available via ChatGPT Plus/Pro.
Which is better for coding — Claude Opus 4.7 or GPT-5.5?
Claude Opus 4.7 leads on coding benchmarks (Claude Opus 4.7: 97/100, GPT-5.5: 95/100). For production coding agents also weigh tool-use performance — Claude Opus 4.7 scores 96, GPT-5.5 scores 94.