OpenCode Zen
GPT-5.3 Codex Spark
gpt-codex-spark
Model ID gpt-5.3-codex-spark
Provider OpenCode Zen
Family gpt-codex-spark
Status -
Knowledge Cutoff 2025-08-31
Release Date 2026-02-12
Input Modalities text
Output Modalities text
Context Window 128000
Input Limit 128000
Output Limit 128000
Tool Calling Yes
Reasoning Yes
Structured Output Yes
Temperature Control No
Open Weights No
Input Cost / 1M tokens $1.75
Output Cost / 1M tokens $14.00
Reasoning Cost / 1M tokens -
Cache Read Cost / 1M tokens $0.17
Cache Write Cost / 1M tokens -