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