o3 pricing & price history
o3 by OpenAI costs $2.00 per 1M input tokens and $8.00 per 1M output tokens, with a 200K token context window.
Price history
No price changes since tracking began on 2026-09-24. We check every 10 minutes.
Cost calculator
Cheaper alternatives to o3
| Model | Input | Output | Context | Intel. | |
|---|---|---|---|---|---|
 GLM 5.3 Flash Z.ai (Zhipu) | $0.0399 | $0.0784 | 1M | 27.8 | compare |
 DeepSeek V4.1 Flash DeepSeek | $0.022 | $0.40 | 1M | — | compare |
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 Llama 4 Scout Meta Llama | $0.10 | $0.30 | 1.3M | — | compare |
 MiMo-V2.6-Flash Xiaomi | $0.14 | $0.28 | 1.1M | 26.7 | compare |
Llama Guard 4 12B Meta Llama | $0.18 | $0.18 | 164K | — | compare |
 Claude Haiku 5.5 Anthropic | $0.10 | $0.50 | 1M | 36.5 | compare |
GPT-6 Luna Pro OpenAI | $0.10 | $0.50 | 1.1M | — | compare |
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About o3
o3 is a well-rounded and powerful model across domains. It sets a new standard for math, science, coding, and visual reasoning tasks. It also excels at technical writing and instruction-following....
FAQ
How much does o3 cost?
o3 by OpenAI costs $2.00 per 1M input tokens and $8.00 per 1M output tokens, with a 200K token context window. A typical request with 2,000 input and 500 output tokens costs about $0.008.
What is the context window of o3?
o3 supports up to 200,000 tokens of context and up to 100,000 output tokens per request.
Has o3’s price changed?
No price changes recorded since ModelBank started tracking it on 2026-09-24.
Is o3 being deprecated?
Yes — o3 is scheduled to be retired on 2026-12-11. Consider migrating to one of the alternatives on this page.
What are cheaper alternatives to o3?
Cheaper options include GLM 5.3 Flash ($0.0399/$0.0784), DeepSeek V4.1 Flash ($0.022/$0.40), DeepSeek V4.1 Flash 1017 ($0.098/$0.29), Llama 4 Scout ($0.10/$0.30).