GPT-5.3 Codex (Beta)
openai-gpt-53-codex
Intelligence (AA)
53.6
source: Artificial Analysis
Speed
65 t/s
median output throughput
Coding
53.1
Artificial Analysis coding index
Providers
3
with listed pricing
Providers for GPT-5.3 Codex (Beta)
Model facts
- Model ID
- openai-gpt-53-codex
- Tier
- Frontier
- Context window
- 400K
- Privacy
- Venice — no data retention
- Notes
- Beta model
Cite: GPT-5.3 Codex (Beta)
Citation
GPT-5.3 Codex (Beta) — Inference Index, 2026-04-16. Retrieved from https://inferenceindex.ai/models/openai-gpt-53-codexAPI
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