GPT-5.3 Codex API Pricing
OpenAI · released 2026-02-05
Also searched as: GPT 5.3 Codex pricing · 5.3 Codex price
GPT-5.3 Codex price
0.175¢ / 1K
1.40¢ / 1K
0.481¢ / 1K
Official list price from OpenAI, as recorded by models.dev
What it actually costs
| Workload | Tokens | Cost |
|---|---|---|
| Short chat reply | 500 in / 300 out | 0.507¢ |
| RAG query | 4,000 in / 500 out | $0.0140 |
| Long document summary | 50,000 in / 1,000 out | $0.1015 |
| Code review of a 2k-line file | 30,000 in / 2,000 out | $0.0805 |
| 1,000 chat replies/day for 30 days | 30,000 × (500 in / 300 out) | $152.25 |
Cost = (input tokens ÷ 1,000,000 × $1.75) + (output tokens ÷ 1,000,000 × $14.00).
Benchmarks
| Benchmark | Value | Source | As of |
|---|---|---|---|
| Epoch Capabilities Index (ECI) | No public data yet | ||
| Epoch Mock AIME accuracy | No public data yet | ||
| Epoch FrontierMath (T1–3) accuracy | No public data yet | ||
| Arena text rating | No public data yet | ||
| Arena coding rating (human preference votes, not task accuracy) | No public data yet | ||
| Arena math rating | No public data yet | ||
| Arena WebDev rating | No public data yet | ||
More from OpenAI
| Model | Released | Blended $/1M |
|---|---|---|
| GPT-6.1 Terra | 2026-10-26 | $2.00 |
| GPT-6.1 Sol | 2026-09-29 | $4.00 |
| GPT-6 Sol | 2026-09-22 | $4.00 |
| GPT-6 Luna | 2026-09-22 | $0.20 |
| GPT-Live 1 | 2026-09-10 | — |
| GPT Image 2.5 Sunburst | 2026-09-08 | $11.25 |
| GPT Image 2.5 Flare | 2026-09-08 | $11.25 |
| GPT-6 Astra (Fast) | 2026-09-04 | — |
Count tokens & estimate cost for GPT-5.3 Codex
Prices: OpenAI's official list price as recorded by models.dev; benchmarks: see sources below; last synced 2026-11-06.
FAQ
Who develops GPT-5.3 Codex?
GPT-5.3 Codex is developed by OpenAI, released 2026-02-05.
How much does GPT-5.3 Codex cost per million tokens?
GPT-5.3 Codex costs $1.75 per 1M input tokens and $14.00 per 1M output tokens ($4.8125 blended), per OpenAI's official list price as recorded by models.dev.
What is the GPT-5.3 Codex API price?
The GPT-5.3 Codex API price is $1.75 per 1M input tokens and $14.00 per 1M output tokens ($4.8125 per 1M blended).
How much does GPT-5.3 Codex cost for a typical request?
A short chat reply (500 in / 300 out tokens) costs about 0.507¢ on GPT-5.3 Codex, at $1.75/1M input and $14.00/1M output.
Is GPT-5.3 Codex free?
GPT-5.3 Codex's official API list price is $1.75 per 1M input tokens and $14.00 per 1M output tokens. This site tracks list prices only, not free tiers or trial credits — check OpenAI's site for those.
Where does this data come from?
Pricing for GPT-5.3 Codex comes from models.dev and LiteLLM (open MIT-licensed catalogs); benchmark scores come from Epoch AI and LMArena (open CC BY 4.0 licenses) — see /data-sources/. Last synced 2026-11-06.