Claude Opus 5 vs GPT-5.4 nano: pricing, specs & reviews compared
Side-by-side comparison of Claude Opus 5 (anthropic) and GPT-5.4 nano (openai) — pricing per million tokens, context length, licensing, benchmarks and community reviews on Reviuws.
| Spec | Claude Opus 5 | GPT-5.4 nano |
|---|---|---|
| Provider | anthropic | openai |
| License | closed | closed |
| Parameters | — | — |
| Context | 1000k | 400k |
| Input price / M tok | $5 | $0.2 |
| Output price / M tok | $25 | $1.25 |
| Rating | 0.0 (0) | 0.0 (0) |