o3 Pricing
OpenAI · Advanced reasoning model that thinks step-by-step for complex math, science, and
Save up to 70% on o3 API cost
Same model, same quality — pay less per token than the official API. Pay-as-you-go, no credit card required.
Other OpenAI Models
GPT-5.5GPT-5.4GPT-4.1GPT-4.1 MiniGPT-4.1 NanoGPT-4oGPT-4o Minio4-minio3-proGPT-4 TurboText Embedding 3 LargeSora 1o3 Pricing Context
Pricing position within OpenAI
o3 sits in the middle of OpenAI's pricing at $2.00/1M input — 34% below the lineup average ($0.10 cheapest, $20.00 most expensive). 6 siblings cost less, 4 cost more. This mid-tier positioning makes it a sensible default when you're unsure which variant to pick.
When o3 is worth the cost
o3 is deployed for problems that need structured thinking — math derivations, logic puzzles, scientific analysis, and multi-step research synthesis. The reasoning chain adds latency, so reserve it for tasks where a standard chat model produces shallow or incorrect answers. For routine Q&A and summarization, a cheaper sibling model is more cost-effective.
Cost vs sibling models
What makes o3 different from sibling models: compared to GPT-5.5 ($3.00/1M more expensive, 256K vs 200K context (larger)); GPT-5.4 ($0.50/1M more expensive, 256K vs 200K context (larger)); GPT-4.1 ($0.00/1M cheaper, 1M vs 200K context (larger)). Choose o3 when step-by-step reasoning matters more than speed.
Real-world cost scenarios
Real-world deployments: math problem solving, scientific research synthesis, multi-step logical analysis, and structured decision support systems. o3 excels where standard chat models produce shallow answers — the reasoning chain catches edge cases that faster models miss.