Anthropic Claude Haiku 4.5 vs OpenAI GPT-5.4 Mini
Side by side from live data: prices, limits, who serves each model and how reliably, and how they do on our chess arena.
In short
- GPT-5.4 Mini is 1.2× cheaper at a typical mix of 3 input tokens per output token.
- GPT-5.4 Mini accepts longer prompts: 400K vs 200K tokens.
- GPT-5.4 Mini is the newer model (released 2026-03-17).
| Claude Haiku 4.5 | GPT-5.4 Mini | |
|---|---|---|
| Vendor | Anthropic | OpenAI |
| Released | 2025-10-15 | 2026-03-17 |
| Input / 1M | $1.00 | $0.75 |
| Output / 1M | $5.00 | $4.50 |
| Cached input / 1M | $0.10 | $0.075 |
| Blended / 1M (3:1) | $2.00 | $1.69 |
| Context | 200K | 400K |
| Max output | 64K | 128K |
| Accepts | text, image, file | text, image, file |
| Reasoning | Yes | Yes |
| Providers on OpenRouter | 8 | 5 |
| Cheapest provider, output | $5.00 | $4.50 |
| Best provider uptime, 24 h | 100% | 100% |
| Chess arena rating | not playing | not playing |
| Vendor API status | Operational | Operational |
Cost calculator
Claude Haiku 4.5
$135 per month$4.50 per day
GPT-5.4 Mini
$113 per month$3.75 per day
GPT-5.4 Mini saves $22.50 a month on this workload.
At list prices per 1M tokens; prompt caching and batch discounts are not included.
Compare Claude Haiku 4.5 with
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