Claude 3.5 Haiku vs GPT-5 Pro
Anthropic vs OpenAI — benchmarks, pricing, and capabilities side by side.
- •GPT-5 Pro has the higher intelligence index (88.4 vs 54.5)
- •Claude 3.5 Haiku is cheaper ($0.80 vs $15.00 per 1M input)
- •GPT-5 Pro has a larger context window (400K)
| Claude 3.5 Haiku | GPT-5 Pro | |
|---|---|---|
| Intelligence index | 54.5 | 88.4 |
| Developer | Anthropic | OpenAI |
| Type | LLM | LLM |
| Access | API only | API only |
| Context window | 200,000 tokens | 400,000 tokens |
| Input price | $0.80 / 1M | $15.00 / 1M |
| Output price | $4.00 / 1M | $120.00 / 1M |
| Speed | 104 tok/s | — |
| Released | November 4, 2024 | October 6, 2025 |
| Parameters | — | — |
| Input modalities | Text, Image | Text, Image |
| Output modalities | Text | Text |
Shared benchmarks
Claude 3.5 Haiku
GPT-5 Pro
GPQA Diamond
41.6
88.4
Humanity’s Last Exam
3.5
42