Claude Haiku 4.5 vs GPT-5.1
Claude Haiku 4.5 costs 42% less at typical usage ($2.00 vs $3.44 per 1M tokens). GPT-5.1 scores higher on 11 of 11 tasks.
| Spec | Claude Haiku 4.5 | GPT-5.1 |
|---|---|---|
| Input /1M | $1.00 | $1.25 |
| Output /1M | $5.00 | $10.0 |
| Typical /1M | $2.00 | $3.44 |
| Context window | 200k | 400k |
| Speed | Blazing | Brisk |
| Privacy | Strong | Standard |
| Open weights | No | No |
Claude Haiku 4.5
Steady since we started tracking (Jul 13, 2026)
GPT-5.1
Steady since we started tracking (Jul 13, 2026)
Quality by task
Coding88/94
Agents87/93
Reasoning84/96
Writing85/92
Chat88/93
Classify86/88
Extract86/89
Summarize87/91
Translate84/90
Vision84/94
General86/94
Price your own prompt against both
The free estimator ranks Claude Haiku 4.5, GPT-5.1 and every other catalog model by cost and quality for your exact workload.
Open the estimatorGet notified when either model's price changes
We watch the catalog for list-price changes. Opt in with just an email, no account, and unsubscribe in one click anytime.
Also compare Claude Haiku 4.5
Also compare GPT-5.1
Prices are list $/1M tokens, hand-maintained from public provider pricing. Task scores are benchmark-informed 0-100 estimates, not gospel — validate on your own evals before moving production traffic. Not affiliated with any model provider.