Claude Haiku 4.5 vs GPT-5 Mini
GPT-5 Mini is cheaper on output tokens, while GPT-5 Mini offers a larger context window. Choose Claude Haiku 4.5 or GPT-5 Mini based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Claude Haiku 4.5 | GPT-5 Mini |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Input / 1M tokens | $1.00 | $0.25 |
| Output / 1M tokens | $5.00 | $2.00 |
| Context window | 200K | 400K |
| Parameters | — | — |
| Open weights | No | No |
| Released | Oct 2025 | Aug 2025 |
| LiveBench score | 61.0 | 66.6 |
| GPQA Diamond score | 71.2 | 75.0 |
| FrontierMath score | 5.9 | 27.2 |
| LMArena (Chatbot Arena) Elo score | 1397 | 1373 |
| LMArena WebDev Elo score | 1330 | — |
| Epoch Capabilities Index score | 142 | 145 |
| SWE-bench Multilingual score | 64.7 | 39.7 |
| SWE-bench Verified score | 66.6 | 59.8 |
| LMArena Vision Elo score | — | 1202 |
FAQ
Is Claude Haiku 4.5 or GPT-5 Mini cheaper?
GPT-5 Mini is cheaper on output tokens ($2.00 vs $5.00 per 1M).
Which has the larger context window, Claude Haiku 4.5 or GPT-5 Mini?
GPT-5 Mini has the larger context window (400K tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.