OpenAI
GPT-5.3 Codex
An agentic coding model that combines code generation with general-purpose intelligence.
Our editorial assessment as of Apr 24, 2026, based on the public sources listed below.
Overall rank
#8
Tier
S
Score
90.0
Main category
Coding
Strengths
- Described as a 'self-improving' agentic coding model.
- Sets new highs on key coding benchmarks.
- Approximately 25% faster than previous versions.
Considerations
- Specialized for coding, may not be the top choice for general reasoning.
- Multiple versions of GPT-5 can be confusing for users.
Price
API $1.75 / 1M tokens (input), $14.00 / 1M tokens (output)
Score breakdown
Performance
—
Reputation
—
Price
60.0
Recency
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Verification status
Each field carries its own re-verification date. Amber means older than 90 days — treat those figures as stale until re-checked.
Sources
- OpenAI Model Release NotesAccessed: 2026-04-20
- AI Leaderboard 2026Accessed: 2026-04-20