What the evidence says
- Developer
- OpenAI
- Released
- January 31, 2025
- Domains
- Language
- Tasks
- Language modeling/generation · Question answering · Quantitative reasoning · Code generation
- Access
- API access
- Weights
- Closed weights
Across the boards
Each row is one named authority's own current view. Nothing is combined.
- LMArena overall
- 1347.7 · rank #184 · 57,313 battles · published July 20, 2026 · board
- LMArena coding arena
- 1415.9 · rank #162 · board
- LMArena creative writing arena
- 1301.0 · rank #204 · board
- LMArena instruction following arena
- 1343.5 · rank #178 · board
- LMArena hard prompts arena
- 1370.2 · rank #176 · board
- LMArena multi-turn arena
- 1339.6 · rank #189 · board
- LMArena long queries arena
- 1358.4 · rank #178 · board
- LMArena math arena
- 1381.6 · rank #151 · board
- Aider polyglot
- 53.8% · rank #32 · system o3-mini (medium) (system result, not a bare-model score)
Platform facts
OpenRouter's platform listing, retrieved July 22, 2026. Routed platform prices, not first-party provider prices.
- Input price
- $1.10 per 1M tokens
- Output price
- $4.40 per 1M tokens
- Context length
- 200,000 tokens
- Listed on OpenRouter
- January 31, 2025
Common questions
What is o3-mini?
o3-mini is a OpenAI model released January 31, 2025, according to Epoch AI's reviewed catalog record. The record classifies it under language.
How does o3-mini rank on LMArena?
In the LMArena style-controlled text snapshot published July 20, 2026, o3-mini holds official rank 184 with a rating of 1347.7 across 57,313 battles.
What does o3-mini cost?
OpenRouter lists it at $1.10 per million input tokens and $4.40 per million output tokens, retrieved July 22, 2026. Those are the platform's routed prices, not first-party provider prices.