GPT-5.1 pricing
$1.25 per 1M input tokens, $10.0 per 1M output tokens from OpenAI. 400k context window, 90% off cached input, 50% off via batch API.
Steady since we started tracking (Jul 13, 2026)
Quality by task
Benchmark-informed 0-100 estimates. GPT-5.1's strongest category is reasoning & analysis.
Cheaper alternatives for reasoning & analysis
Models under $3.44/1M typical that stay within 10 quality points of GPT-5.1's 96 score on this task.
Price a real prompt against GPT-5.1
The free estimator ranks every catalog model on cost and quality for reasoning & analysis,GPT-5.1 included.
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Compare GPT-5.1 against
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.