OpenAI
GPT-5.3-Codex
Overall 87commercialOpenAI's GPT-5.3-Codex for expanding Codex across the full spectrum of professional work on a computer. Powers the Codex app on macOS and Windows.
Capability profile
Radar view of the model's practical strengths. This chart is backed by textual summaries below for crawlability.
Benchmark summary
OpenAI's coding-specialized model powering the Codex app for professional development.
Strengths
- • Industry-leading coding
- • Full computer operation
- • Native app support
- • Playwright integration
Trade-offs
- • Coding-focused, less general-purpose
Crawlable benchmark analysis
GPT-5.3-Codex is positioned as a coding api model with published scores that emphasize its practical fit for buyers evaluating the entry.
Published scores highlight reasoning 92/100, coding 99/100, enterprise readiness 88/100, vision 70/100, speed 85/100, and safety 80/100.
Pricing starts at $0.005 per 1K input tokens and $0.02 per 1K output tokens. With a context window of 1,000,000 tokens, it supports large-document analysis and retrieval workflows.
Across the tracked benchmark set, GPT-5.3-Codex shows especially strong performance in LiveCodeBench, making it a viable option for teams prioritizing coding-heavy use cases.
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