OpenAI
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...
OpenRouter
Price record: 2026-10-03. Source: openrouter.
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Quality Score
1340
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.
15 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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Jun 2025
Released
3/5 signals
3/4 signals
5/5 signals
1/4 signals
3/4 signals
Parameters
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Training compute
Not reported
Dataset scale
Not reported
Base model
Not reported
Source-reported access: API access · Unknown confidence
Gaps we are still tracking
Metadata sources
Epoch AI, Data on AI Models. Used under CC BY with attribution.
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-pro Benchmark Update
Quality: 21.9/100 | Price: $35/M tokens | Output: 0 tok/s
View sourceo3-pro Benchmark Update
Quality: 21.9/100 | Price: $35/M tokens | Output: 0 tok/s
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 sourceo3-pro Benchmark Update
Quality: 21.9/100 | Price: $35/M tokens | Output: 0 tok/s
View sourceo3-pro Benchmark Update
Quality: 21.9/100 | Price: $35/M tokens | Output: 0 tok/s
View sourceo3-pro Benchmark Update
Quality: 21.9/100 | Price: $35/M tokens | Output: 0 tok/s
View source1340
ELO Score
1337 - 1345
95% Confidence
+/-4 points
19.4K
Battles
Jul 9, 2026
Last Updated
1218
ELO Score
1211 - 1225
95% Confidence
+/-7 points
46.7K
Battles
May 18, 2026
Last Updated