Claude 3 Haiku vs GPT-5.2-Codex
Anthropic vs OpenAI — benchmarks, pricing, and capabilities side by side.
- •GPT-5.2-Codex has the higher intelligence index (89.9 vs 38.9)
- •Claude 3 Haiku is cheaper ($0.25 vs $1.75 per 1M input)
- •GPT-5.2-Codex is faster
- •GPT-5.2-Codex has a larger context window (400K)
| Claude 3 Haiku | GPT-5.2-Codex | |
|---|---|---|
| Intelligence index | 38.9 | 89.9 |
| Developer | Anthropic | OpenAI |
| Type | Multimodal | Multimodal |
| Access | API only | API only |
| Context window | 200,000 tokens | 400,000 tokens |
| Input price | $0.25 / 1M | $1.75 / 1M |
| Output price | $1.25 / 1M | $14.00 / 1M |
| Speed | 104 tok/s | 106 tok/s |
| Released | March 13, 2024 | January 14, 2026 |
| Parameters | — | — |
| Input modalities | Text, Image | Text, Image |
| Output modalities | Text | Text |
Shared benchmarks
Claude 3 Haiku
GPT-5.2-Codex
GPQA Diamond
33.3
89.9
Humanity’s Last Exam
3.9
33.5