openai
OpenAI: o3
openai/o3
Our take
AI-assisted analysis based on the sources below. Suitability is an editorial assessment; test it on your own workload.
OpenAI's o3 is a reasoning-focused model listed in the OpenRouter catalog as openai/o3 (canonical openai/o3-2025-04-16). According to the catalog, it accepts text, image, and file inputs, returns text, and offers a 200,000-token context window with a knowledge cutoff of June 2024. Reasoning is mandatory on this listing. The catalog describes it as strong in math, science, coding, and visual reasoning; these are vendor-reported claims, not independently verified. No independent model card was available in this source pack.[1]
Strengths
- Catalog-reported multimodal inputs (text, image, and file) paired with a 200,000-token context window.[1]
- Supports tool calling, structured outputs, seeded sampling, and an optional paid web-search feature, per the catalog.[1]
- The vendor description in the catalog claims strong performance on math, science, coding, and visual reasoning tasks.[1]
Limitations
- Reasoning cannot be disabled: the catalog marks it as mandatory, which may affect latency and cost for simple prompts.[1]
- Evidence is catalog-only; no independent model card was available in this source pack, so validate behavior on your own workloads before adoption.[1]
- Catalog design-arena results are mid-table rather than leading, and the listing carries an expiration date of 2026-12-11.[1]
Where to use it
- Suggested for math, science, coding, or visual-reasoning tasks where mandatory reasoning is acceptable.[1]
- Potentially useful for analyzing documents that mix text, images, and files within long contexts.[1]
- Reasonable candidate for tool-calling and structured-output workflows, pending workload validation.[1]
Sources
- [1] OpenRouter catalog · OpenAI: o3Sources checked: Nov 13, 2026
About this model
Description below is the original text supplied by OpenRouter, shown in the source language.
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....
Specifications
- Model ID
- openai/o3
- Canonical ID
- openai/o3-2025-04-16
- Creator
- openai
- Added to OpenRouter
- 16.04.2025
- Context length
- 200,000
- Modality
- text+image+file->text
- Input modalities
- image, text, file
- Output modalities
- text
- Token pricing
- USD per 1M tokens: in $2 / out $8
- Knowledge cutoff
- 30.06.2024
- Expiration date
- 11.12.2026
Tasks and capabilities
A grade appears only where the source supplies a matching measurement for that task, the model is active and the cohort holds at least 10 comparable models. The capability column lists facts the source declares — supported formats, reasoning and tool parameters — which are not measured quality.
| Task | Grade | Source-declared capability |
|---|---|---|
| General quality | No measurement | reasoning: mandatory · parameters: include_reasoning, reasoning |
| Coding | No measurement | — |
| Agents | No measurement | parameters: structured_outputs, tool_choice, tools |
| Writing | No measurement | output: text |
| Reasoning | No measurement | reasoning: mandatory · parameters: include_reasoning, reasoning |
| Document analysis | No measurement | input: file |
| Vision | No measurement | input: image |
| Image generation | No measurement | — |
| Audio | No measurement | — |
| Video | No measurement | — |
| Embeddings | No measurement | — |
Evaluations
| Source | Benchmark | Value | Grade | Data retrieved |
|---|---|---|---|---|
| Design Arena | models · codecategorieswin rate 51.9% · rank 128 | 1,010Elo | CC — below the B band | 13.11.2026 |
| Design Arena | models · datavizwin rate 48.1% · rank 62 | 1,200Elo | BB — next 30% of the cohort | 13.11.2026 |
| Design Arena | models · gamedevwin rate 56.9% · rank 122 | 1,025Elo | CC — below the B band | 13.11.2026 |
| Design Arena | models · uicomponentwin rate 53.3% · rank 121 | 1,009Elo | CC — below the B band | 13.11.2026 |
| Design Arena | models · websitewin rate 53.8% · rank 129 | 1,029Elo | CC — below the B band | 13.11.2026 |
How grades work
Each letter grade compares a model only against other models scored by the same source and metric in the current snapshot. S means the top 10%, A the next 20%, B the next 30%, C the rest. Models without a published measurement are shown as not rated — a supported format alone never implies measured quality.
- S — S — top 10% of the cohort
- A — A — next 20% of the cohort
- B — B — next 30% of the cohort
- C — C — below the B band
Providers
Optional live provider statistics from OpenRouter. Missing values are unknown, not zero.
| Provider | Context length | Price in /1M | Price out /1M | Latency p50 (30m, s) | Throughput p50 (30m, tok/s) | Uptime (30m) |
|---|---|---|---|---|---|---|
| OpenAI | 200,000 | $2 | $8 | — | — | 100% |
Provider data retrieved: 13.11.2026
Related articles
No published articles identify this model yet.