LLM
GPT-5.3 Codex
by OpenAI
Prices last updated October 4, 2026
GPT-5.3 code-optimized variant.
Context
128k
Providers
6
Cheapest Input
$0.700
Function Calling JSON Mode Streaming Chat / InstructCode
Price Comparison
Compare pricing across 6 providers serving GPT-5.3 Codex
| Provider | Input $/1M | Output $/1M | Context | Speed | TTFT | Status |
|---|---|---|---|---|---|---|
| KI KIE AI | $0.700 ● | $5.60 | — | — | — | Live |
| OP OpenRouter | $1.75 | $14.00 | — | — | — | Live |
| OP OpenAI | $1.75 | $14.00 | — | — | — | Live |
| AT Atlas Cloud | $1.75 | $14.00 | 400k | — | — | Live |
| WA WaveSpeed AI | $1.75 | $14.00 | 400k | — | — | Live |
| VE Venice AI | $2.19 | $17.50 | 400k | — | — | Live |
● Cheapest ● Fastest Prices in USD per 1M tokens