// model_detail
active reasoning
o3
by OpenAI
OpenAI's reasoning model. Excels at math, science, and complex multi-step problems. 85.3% GPQA.
Context window 200K 200K tokens
Max output 100K 100K tokens
Pricing /1M tok $2.00 in / $8.00 out per 1M tokens (API)
Released Apr 16, 2025
// specifications
Specs & capabilities
API details
- API model ID
o3- Internal ID
o3- Status
- active
- Type
- reasoning
Capabilities
- Vision
- 👁️ Yes
- Function calling
- 🔧 Yes
- Knowledge cutoff
- 📅 2025-04
Pricing
- Input
- $2.00 / 1M tokens
- Output
- $8.00 / 1M tokens
- Source
- First-party API pricing
Lifecycle
- Predecessor
- o1
// notes
Additional notes
Reasoning model, 85.3% GPQA
// more_from_openai
More OpenAI models
GPT-5.4 active frontier
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GPT-5.4 Pro active reasoning
Highest-tier reasoning model with deep thinking. 1.1M context.
GPT-5.4 Mini active balanced
Smaller 5.4 variant for coding, computer use, and subagents. 1.1M context.
GPT-5.4 Nano active fast
Cheapest model in the GPT-5.4 family for high-volume simple tasks.
GPT-5.3 Chat active balanced
Chat-optimized variant of the GPT-5.3 series.
GPT-5.3 Codex active coding
OpenAI's latest coding-focused model. 91.5% LiveCodeBench. 400K context.
// external_links