GPT 5.3 Codex (Fast)
Vercel AI Gateway
GPT 5.3 Codex (Fast) by Vercel AI Gateway costs $3.50 per 1M input tokens and $28.00 per 1M output tokens, with a 400K-token context window.
Pricing
Input (per 1M tokens)
$3.50
Output (per 1M tokens)
$28.00
Cached input (per 1M)
$0.35
Specifications
- Provider
- Vercel AI Gateway
- Context window
- 400K tokens
- Parameters
- —
- Released
- Feb 2026
- Open weights
- No
- Frontier model
- No
Compare GPT 5.3 Codex (Fast) with…
GPT 5.3 Codex (Fast) vs Grok 4.20 Multi Agent Beta$2.50/1MGPT 5.3 Codex (Fast) vs Grok 4.20 Reasoning$2.50/1MGPT 5.3 Codex (Fast) vs Pixtral 12B$0.15/1MGPT 5.3 Codex (Fast) vs Pixtral Large (latest)$6.00/1MGPT 5.3 Codex (Fast) vs GPT-5.3 Chat$14.00/1MGPT 5.3 Codex (Fast) vs o3-deep-research$40.00/1M
FAQ
Pricing is per 1M tokens (USD); confirm with the provider before production use.