Claude Opus 4.8 vs GPT-5.4
Anthropic vs OpenAI — benchmarks, pricing, and capabilities side by side.
- •Claude Opus 4.8 has the higher intelligence index (73.1 vs 71.9)
- •GPT-5.4 is cheaper ($2.50 vs $6.30 per 1M input)
- •GPT-5.4 is faster
| Claude Opus 4.8 | GPT-5.4 | |
|---|---|---|
| Intelligence index | 73.1 | 71.9 |
| Developer | Anthropic | OpenAI |
| Type | LLM | LLM |
| Access | — | API only |
| Context window | — | 1,050,000 tokens |
| Input price | $6.30 / 1M | $2.50 / 1M |
| Output price | $25.00 / 1M | $15.00 / 1M |
| Speed | 66 tok/s | 84 tok/s |
| Released | May 28, 2026 | March 5, 2026 |
| Parameters | — | — |
| Input modalities | — | Text, Image |
| Output modalities | — | Text |
Shared benchmarks
Claude Opus 4.8
GPT-5.4
AA-LCR
67.7
74
GPQA Diamond
92
92
Humanity’s Last Exam
45.7
41.6
SciCode
53.5
56.6
Terminal-Bench
58.3
57.6
τ²-bench
94.4
87.1