OpenAI o3: API pricing, providers and specs
OpenAI o3 is a text model by OpenAI. 20 providers serve it, from $6.40 to $38 /1M; the lowest price is at APIMart.
How OpenAI o3 compares
Against the 737 text models on the site priced the same way.
- Pricey for its class: at $6.40 /1M, its lowest price is above 81% of comparable models (median $1.10).
- Its 200K-token context window is larger than 32% of them (median 262K), about 300 pages of text.
- On LMArena's Text board it ranks #37 of the 120 comparable models scored there.
- 20 providers serve it; 88% of comparable models have fewer.
OpenAI o3 prices by provider
Every provider's list price, read from its own price page or API. A price marked “from” changes with context length, resolution or mode.
| Provider | Input | Output | Prompt caching | Context |
|---|---|---|---|---|
| APIMart | $1.60/1M | $6.40/1M | — | — |
 CometAPI | $1.60/1M | $6.40/1M | — | — |
 Poe | $1.82/1M | $7.27/1M | $0.455/1M | 200K |
| OpenAIOfficial | $2/1M | From$8/1M | $0.50/1M | — |
| Vercel AI Gateway | $2/1M | From$8/1M | $0.50/1M | 200K |
 NEAR AI Cloud | $2/1M | $8/1M | $0.50/1M | 200K |
 Helicone | $2/1M | From$8/1M | $0.50/1M | — |
 AIHubMix | $2/1M | $8/1M | $0.50/1M | 200K |
 Impossibl | $2/1M | $8/1M | $0.50/1M | — |
| OpenRouter | $2/1M | From$8/1M | $0.50/1M | 200K |
| DevPass (LLM Gateway) | $2/1M | From$8/1M | $0.50/1M | — |
 CrazyRouter | $2/1M | $8/1M | — | — |
 Requesty | $2/1M | From$8/1M | $0.50/1M | 200K |
 Azure | $2/1M | From$8/1M | $0.50/1M | — |
 FastRouter | $2/1M | $8/1M | $0.50/1M | 200K |
| AI/ML API | $2/1M | $8/1M | $0.50/1M | — |
 DigitalOcean | $2/1M | $8/1M | $0.50/1M | — |
 APIYI | $3/1M | $12/1M | — | — |
 LaoZhang API | $3/1M | $12/1M | — | — |
 Jiekou.AI | $9.50/1M | $38/1M | $0.475/1M | — |
- APIMart$6.40
- CometAPI$6.40
- Poe$7.27
- NEAR AI Cloud$8
- AIHubMix$8
- Impossibl$8
- CrazyRouter$8
- FastRouter$8
- AI/ML API$8
- DigitalOcean$8
- OpenAIOfficialFrom$8
- Vercel AI GatewayFrom$8
Specs
- Type
- Text
- Maker
- OpenAI
- Inputs
- Image, Text
- Outputs
- Text
- Context
- 200K≈ 300 pages of text
- Max output
- 100K
- Capabilities
- Prompt caching, JSON, Reasoning, Tool calling, Vision
- Released
- Apr 16, 2025
- License
- —
- Open weights
- —
- Arena score
- 1410Text
Alternatives to OpenAI o3
Same kind of model from other makers, at a similar price.
| Model | Lowest price | Context | Arena | Providers |
|---|---|---|---|---|
| OpenAI o3this model | $6.40/1M | 200K | 1410 | 20 |
 Gemini 4 Argon | $8/1M | 1.05M | 1673 | 26 |
| Kimi K3 | $8.28/1M | 1.05M | 1655 | 47 |
 Muse Wonder | $16/1M | 1.05M | — | 14 |
| Claude Opus 5.5 | $16/1M | 1M | 1807 | 33 |
 Qwen3.8 2.4T A95B | $4.11/1M | 1M | — | 22 |
| Grok 4.7 | $4.80/1M | 500K | 1637 | 28 |
| Gemini 3 Flash | $2.40/1M | 1.05M | 1466 | 5 |
| Muse Spark 1.3 | $4.25/1M | 1.05M | 1657 | 11 |
More from OpenAI
OpenAI o3 FAQ
APIMart, at $6.40 /1M. 20 providers serve OpenAI o3; the table above lists every one with its price.
OpenAI o3 reads up to 200K tokens per request and writes up to 100K.
We have not found OpenAI o3's weights published by its maker.
20 API providers serve OpenAI o3. Compare their prices above, or open a provider to see everything it offers.
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