OpenAI
OpenAI's most powerful reasoning model. Achieves state-of-the-art results on complex math, science, and code tasks through extended chain-of-thought.
Achieves state-of-the-art results on complex math, science, and code tasks through extended chain-of-thought.
OpenRouter
Price record: 2026-10-03. Source: openrouter.
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48.0
Quality Score
1428
Arena ELO
Undisclosed
Parameters
200K
Context
This measures the amount of verifiable public evidence we have, not how capable the model is. A missing field means it has not been verified yet, not that its value is zero.
17 of 22 public signals
Use this section to answer one simple question first: how much outside evidence do we have that this model performs well? Structured benchmark scores appear first, then official provider evidence, then live arena signal.
This model has normalized benchmark rows, so scores here are directly comparable across benchmark sources.
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Apr 2025
Released
4/5 signals
4/4 signals
5/5 signals
1/4 signals
3/4 signals
Parameters
—
Training compute
Not reported
Dataset scale
Not reported
Base model
Not reported
Source-reported access: API access · Unknown confidence
Gaps we are still tracking
These are recent benchmark or leaderboard claims from official provider sources. They are useful for freshness and context, but they are not treated the same as normalized independent benchmark rows.
o3 Benchmark Update
Quality: 20.2/100 | Price: $3.5/M tokens | Output: 106.692 tok/s | MMLU: 0.853% | HumanEval: 0.808%
View sourceo3-mini-2025-01-31 - Arena-Hard-Auto
Arena-Hard-Auto official Gemini-2.5 judged score 50.0 with CI 0/0
View sourceo3-20250416 - SWE-Bench Verified
SWE-Bench Verified resolved rate 58.4
View sourceO3-Mini-2025-01-31 (Low) - LiveCodeBench
LiveCodeBench pass@1 70.6 across 1055 tasks
View sourceo3 Benchmark Update
Quality: 20.2/100 | Price: $3.5/M tokens | Output: 111.73 tok/s | MMLU: 0.853% | HumanEval: 0.808%
View sourceIntroducing GPT‑5 for developers
Introducing GPT‑5 for developers | OpenAI Skip to main content Research Products Business Developers Company Foundation (opens in a new window) Log in Try ChatGPT (opens in a new window) Research Products Business Developers Company Foundation (opens in a new window) Try ChatGPT (opens in a new window) Login OpenAI August 7, 2025 Product Introducing GPT‑5 for developers The best model for coding and agentic tasks. Loading… Share Introduction Introduction Coding Frontend engin
View source1216
ELO Score
1209 - 1223
95% Confidence
+/-7 points
45.6K
Battles
Oct 3, 2026
Last Updated
1428
ELO Score
1425 - 1433
95% Confidence
+/-4 points
25.4K
Battles
Oct 3, 2026
Last Updated