OpenAI
GPT-5.3 Codex
GPT-5.3 Codex by OpenAI — compare inference API pricing across providers.
Input from
$1.75 / 1M tokens
across 1 provider
API Pricing
| Provider | Input / 1M | Output / 1M | Cached / 1M |
|---|---|---|---|
| $1.75 | $14.00 | $0.175 |
Prices updated daily. Last check: Aug 26, 2026
GPT-5.3 Codex pricing by provider
Input, output, and batch rates, plus alternatives, for one provider at a time.
Performance & Benchmarks
Source: Artificial Analysis →Intelligence
45.5 / 100
Output Speed
121 t/s
Latency (TTFT)
31.9s
Reasoning & Knowledge
- GPQA Diamond91.5%
- Humanity's Last Exam42.5%
Coding
- SciCode53.2%
Agentic & Tool Use
- Terminal-Bench Hard53.0%
- τ²-bench86.0%
Instruction & Long Context
- IFBench75.4%
- Long-Context Reasoning78.3%
Benchmarks measured Aug 2026. Scores are independent evaluations, not vendor-reported.
Model Details
General
- Creator
- OpenAI
- Modalities
- Text
Capabilities
- Tool Calling
- No
- Open Source
- No