Claude Opus 4.7 vs GPT-5.5 Instant
Pricing, benchmarks, and use case comparison
Quick take
- •Claude Opus 4.7 is meaningfully stronger at coding (94 vs 78 on our capability index).
- •GPT-5.5 Instant is meaningfully stronger at speed (92 vs 68).
Specs comparison
| Claude Opus 4.7 | GPT-5.5 Instant | |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Type | Closed source | Closed source |
| Context window | 1M | ✓1050000 |
| Input / 1M tokens | $5.00 | 5.00 |
| Output / 1M tokens | $25.00 | 30.00 |
| Release date | 2026-04 | 2026-05 |
Benchmarks
| Benchmark | Claude Opus 4.7 | GPT-5.5 Instant |
|---|---|---|
| SWE-bench Verified | 87.6% | - |
| SWE-bench Pro | 64.3% | - |
| AIME 2025 | - | 81.2 |
| Terminal-Bench 2.0 | - | 82.7 |
| FrontierMath Tier 1–3 | - | 51.7 |
Scores sourced from official provider release posts and independent benchmark aggregators.
Which should you choose?
Choose Claude Opus 4.7 if...
- →You have a pipeline pinned to Opus 4.7 and need stability
- →Your workload is vision-heavy and benefits from higher-resolution image input
- →You need top-tier coding with 1M context but haven't migrated to 4.8 yet
- →You want documented, broadly available Opus-class behavior
Choose GPT-5.5 Instant if...
- →Interactive chat and everyday assistant tasks where responsiveness matters most
- →High-volume, latency-sensitive workloads that do not need deep reasoning
- →General questions, drafting, and summarization at speed