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OpenAI: o3 API Pricing
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....
How much does OpenAI: o3 cost for a real workload?
At 10M input + 2M output tokens per month, OpenAI: o3 costs about $36 ($20 input + $16 output). Try your own volumes in the cost calculator.
What is the official OpenAI: o3 price?
| Official (openai) | Catalog (OpenRouter) | |
|---|---|---|
| Input /1M | $2 | $2 |
| Output /1M | $8 | $8 |
| Cached input /1M | $0.5 | $0.5 |
✓ Matches the official list price. Source: openai official pricing page, checked 2026-10-21.
What are cheaper alternatives to OpenAI: o3?
- Google: Nano Banana 2.1 — $1.5 in / $7.5 out per 1M
- AionLabs: Aion 3.5 — $3 in / $6 out per 1M
- AionLabs: Aion-3.0 — $3 in / $6 out per 1M
- Mistral: Mistral Medium 3.5 — $1.5 in / $7.5 out per 1M
- Anthropic: Claude Sonnet 4.6 (batch) — $1.5 in / $7.5 out per 1M
- Anthropic: Claude Sonnet 4.5 (batch) — $1.5 in / $7.5 out per 1M
Compare OpenAI: o3 with other models
OpenAI: o3 vs OpenAI: gpt-oss-20bOpenAI: o3 vs OpenAI: gpt-oss-20b (batch)OpenAI: o3 vs OpenAI: gpt-oss-120b (batch)OpenAI: o3 vs OpenAI: GPT-5 Nano (batch)OpenAI: o3 vs OpenAI: GPT-4.1 Nano (batch)OpenAI: o3 vs OpenAI: GPT-6 Luna Pro (batch)
Frequently asked questions
How much does OpenAI: o3 cost?
OpenAI: o3 costs $2 per 1M input tokens and $8 per 1M output tokens (list price, snapshot October 21, 2026). At 10M input + 2M output tokens per month that is about $36.
What is the context window of OpenAI: o3?
OpenAI: o3 has a context window of 200,000 tokens and can return up to 100,000 output tokens per response.
What are cheaper alternatives to OpenAI: o3?
Cheaper models include Google: Nano Banana 2.1 ($1.5 in / $7.5 out), AionLabs: Aion 3.5 ($3 in / $6 out), AionLabs: Aion-3.0 ($3 in / $6 out). See the full list on this page.
Is OpenAI: o3 free to use?
No. OpenAI: o3 is a paid model at $2 input / $8 output per 1M tokens. 20 free models are listed on the free models page.
What is the official price of OpenAI: o3?
On openai's official pricing page (checked 2026-10-21), OpenAI: o3 is listed at $2 per 1M input tokens and $8 per 1M output tokens. The catalog price tracked on this page matches it exactly.
Provider: openai · Model ID: openai/o3 · Modality: text+image+file->text · Price snapshot October 21, 2026, refreshed daily. How we collect prices