GPT-5 Codex pricing & benchmarks
Released Sep 23, 2025 · served by 1 provider
What GPT-5 Codex is
GPT-5-Codex is a specialized version of GPT-5 optimized for software engineering and coding workflows. It is designed for both interactive development sessions and long, independent execution of complex engineering tasks....
- Model ID:
openai/gpt-5-codex - Modality: text+image->text
- Knowledge cutoff: 2024-09-30
- Tool calling: supported · Structured output: supported
Providers and prices for GPT-5 Codex
The same model costs different amounts depending on who serves it. Prices are per 1M tokens, cheapest first. Uptime and throughput are OpenRouter's rolling measurements, not vendor claims.
| Provider | Input | Output | Context | Quant | Uptime 24h | Throughput |
|---|---|---|---|---|---|---|
| OpenAIcheapest | $1.25 | $10.00 | 400K | — | — | — |
GPT-5 Codex benchmark results
Design Arena head-to-head results, as reported through the OpenRouter model API.
| Category | Arena | Rank | Elo | Win rate |
|---|---|---|---|---|
| mobileapps | agents | #27 | 1132 | 43.2% |
| webapps | agents | #27 | 1138 | 52.4% |
FAQ
How much does the GPT-5 Codex API cost?
$1.25 per 1M input tokens and $10.00 per 1M output tokens. A typical workload of 1M input + 300K output tokens costs about $4.25.
Is GPT-5 Codex free?
No. It is a paid model starting at $1.25 per 1M input tokens, though some providers offer trial credits.
Which provider is cheapest for GPT-5 Codex?
OpenAI at $1.25 input / $10.00 output per 1M tokens.
Can I self-host GPT-5 Codex?
No. GPT-5 Codex is closed-weight and only available through hosted APIs.