Model comparison
Claude Opus 4.8 vs GPT-5.4 Mini
Anthropic
Claude Opus 4.8
Anthropic's heavyweight for hard reasoning and agentic work.
OpenAI
GPT-5.4 Mini
GPT-5 economics for high-volume routine tasks.
Specs
| Metric | Claude Opus 4.8 | GPT-5.4 Mini |
|---|---|---|
| Context window | 1M tokens↑ | 400K tokens |
| Input $/1M tokens | $5.00 | $0.750↑ |
| Output $/1M tokens | $25.00 | $4.50↑ |
| Modalities | Text · Image | File · Image · Text |
| Open weights | No | No |
| Released | May 2026 | Mar 2026 |
Capability differences
| Capability | Claude Opus 4.8 | GPT-5.4 Mini |
|---|---|---|
| Extended thinking | Yes | No |
Key differences
- -Claude Opus 4.8 offers 1M context; GPT-5.4 Mini offers 400K.
- -Input pricing: Claude Opus 4.8 at $5.00/1M vs GPT-5.4 Mini at $0.750/1M.