High-effort o3 tier for difficult technical reasoning and careful answers
o3-pro by openai is offered by 8 providers on this page. Its official list price is $20.00 per 1M input tokens and $80.00 per 1M output tokens.
Artificial Analysis rates it 21.9 on the Intelligence Index. Against its lowest blended price of $25.00 per 1M, that is roughly 1 index points per dollar, which is the value ratio the leaderboards rank on.
The context window is 200,000 tokens, with an output limit of 100,000 tokens. It supports reasoning, tool use, and structured output. Accepted input modalities are Text, Image, and PDF. Providers report the capability flags inconsistently, so verify a specific feature against the host you plan to use. Its training knowledge cuts off at 2024-05.
Quality is independently evaluated by Artificial Analysis. Speed/latency are model-level medians.
| Provider | Tier | Input | Output | Cache read | Cache write | Context | Output limit | Status |
|---|---|---|---|---|---|---|---|---|
| Abacus | Gateway | $20.00 | $40.00 | — | — | 200,000 | 100,000 | |
| Poe | Gateway | $18.00 | $72.00 | — | — | 200,000 | 100,000 | |
| Kilo Gateway | Gateway | $20.00 | $80.00 | — | — | 200,000 | 100,000 | |
| OpenRouter | Gateway | $20.00 | $80.00 | — | — | 200,000 | 100,000 | |
| Vercel AI Gateway | Cloud | $20.00 | $80.00 | — | — | 200,000 | 100,000 | |
| Eden AI | Gateway | $20.00 | $80.00 | — | — | 200,000 | 100,000 | |
| OpenAIOfficial | First-party | $20.00 | $80.00 | — | — | 200,000 | 100,000 | |
| Helicone | Gateway | $20.00 | $80.00 | — | — | 200,000 | 100,000 |
Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.
1 / 8 providers expose no reasoning control (reasoning_options: []).
| Name | Conditions | Score | Metric | Source |
|---|---|---|---|---|
| Aider Polyglot | — | 84.9 | percent correct | Source ↗ |
The same benchmark scores very differently across harness / dataset, so the qualifying conditions must be shown together.
Individual evaluations run by Artificial Analysis, on the same reasoning tier as the intelligence score above. Each benchmark has its own task set and harness, so rows are not comparable with one another. The Intelligence Index above draws on a different, newer set of evaluations.