OpenAI: o3 Pro
by OpenAIOpenAI: o3 Pro is a large language model from OpenAI. It costs $20.00 per million input tokens and $80.00 per million output tokens. Its context window is 200K tokens.
- Input / 1M tokens
- $20.00
- Output / 1M tokens
- $80.00
- Cached input / 1M
- -
- Context window
- 200K
Not supported
tokens
This model also charges $0.01 per search request
That is $10.00 per 1,000 requests, billed on top of the token prices above. On a typical 1,000-in / 500-out exchange the tokens cost $0.06, so the search fee is 17% on top. Per-token rankings elsewhere ignore this entirely.
Who serves it cheapest
1 hosts serve o3 Pro. Same weights, same API - the price difference is pure margin and routing.
| Provider | Input / 1M | Output / 1M | Context | Throughput | Uptime 24h |
|---|---|---|---|---|---|
| OpenAICheapest | $20.00 | $80.00 | 200K | - | 100.0% |
About o3 Pro
The o-series of models are trained with reinforcement learning to think before they answer and perform complex reasoning. The o3-pro model uses more compute to think harder and provide consistently...
Specifications
| Model ID | openai/o3-pro |
|---|---|
| Provider | OpenAI |
| Context window | 200K tokens |
| Max output | 100K tokens |
| Input modalities | text, file, image |
| Output modalities | text |
| Knowledge cutoff | 2024-06-30 |
| Open weights | No |
| Released | June 10, 2025 |
Cheaper alternatives
Models that cost less than o3 Pro while keeping at least half its context window and every input modality it supports.
Frequently asked
How much does OpenAI: o3 Pro cost?
$20.00 per million input tokens and $80.00 per million output tokens.
What is the context window of OpenAI: o3 Pro?
200K tokens, with up to 100K tokens of output per request.
Does OpenAI: o3 Pro have extra fees beyond per-token pricing?
Yes. OpenAI: o3 Pro charges $0.01 per search request - $10.00 per 1,000 requests - on top of $20.00 per million input tokens and $80.00 per million output tokens. On a typical 1,000-input / 500-output exchange the search fee alone is 17% on top.
Confirm against the source: OpenAI official pricing.