GPT-5.3 Codex Spark
Updated Sep 11, 2026
gpt-codex-spark128k context128k max outputreleased Feb 5, 2026ReasoningTool calling
Official (OpenAI)
$14
output per 1M tokens
Providers
3
offering this model
Spread
1.0×
max / min output
Offers
Metered per-token prices. Cheapest input and output are highlighted; † marks a context-tier surcharge.
| Provider | 1M input | 1M output | 1M cache read | 1M cache write | Context |
|---|
| OpenAI | Cheapest$1.75 | Cheapest$14 | $0.175 | — | 128k |
| OpenCode Zen | $1.75 | $14 | $0.175 | — | 128k |
| Poefree | free | free | — | — | 128k |