Updated daily at 05:00 UTC
- Released
- 10 Jun 2025
- Status
- Deprecated
- Retired
- 11 Dec 2026
- Context
- 200K
- Max output
- 100K
- Input per 1M tokens
- $20.00
- Output per 1M tokens
- $80.00
- Open weights
- No
- License
- proprietary
- Parameters
- —
- Knowledge cutoff
- Jun 2024
- Reasoning
- Yes
- Modalities
- text, image → text
Category scores
Out of 100, from independent and third-party results only, by method category-2026-09-29.1.
| Category | Score | Rank | Coverage |
|---|---|---|---|
| Knowledge & reasoning | 45.3 | Not ranked | 1 of 4 |
| Coding & software engineering | 84.9 | Not ranked | 1 of 5 |
Benchmark results
Every result we hold for this model, with who ran it and where it was published.
Knowledge & reasoning
| Benchmark | Metric | Value | Provenance | Setting | Evaluated | Source |
|---|---|---|---|---|---|---|
| DTBench (Decision Theory Benchmark) | Accuracy (capability questions) | 86.9% | Third party | high | — | https://conceptualreasoning.ai/dtbench via Epoch AI |
| LMCA (Language Model Conceptual Argumentation) | Correlation with expert ratings (Pearson r) | 0.3848 | Third party | high | — | https://conceptualreasoning.ai/lmca via Epoch AI |
Coding & software engineering
| Benchmark | Metric | Value | Provenance | Setting | Evaluated | Source |
|---|---|---|---|---|---|---|
| Aider Polyglot | Percent correct | 84.9% | Third party | high | — | https://aider.chat/docs/leaderboards/ via Epoch AI |
| WeirdML (v2) | Average accuracy | 58.2% | Third party | high | — | https://htihle.github.io/weirdml.html via Epoch AI |
Long context
| Benchmark | Metric | Value | Provenance | Setting | Evaluated | Source |
|---|---|---|---|---|---|---|
| Fiction.LiveBench | % correct at 16K tokens (Epoch's column) | 97.2% | Third party | medium | — | Fiction.live leaderboard via Epoch AI |
Writing
| Benchmark | Metric | Value | Provenance | Setting | Evaluated | Source |
|---|---|---|---|---|---|---|
| LLM Creative Story-Writing Benchmark V1 (Lech Mazur) | Mean rubric score (percent of the 10-point scale) | 84.4% | Third party | medium | — | lechmazur/writing Github repository via Epoch AI |
Other o3 versions
- o3-deep-research24 Jun 2025
- o316 Apr 2025
- o3-mini31 Jan 2025