GPT-5.3-Codex-Spark by Poe — Specs, Pricing & Capabilities | whichllm

Model ID openai/gpt-5.3-codex-spark

Provider Poe

Family -

Status -

Knowledge Cutoff -

Release Date 2026-03-04

Input Modalities text

Output Modalities text

Context Window 128000

Input Limit -

Output Limit 16384

Tool Calling Yes

Reasoning Yes

Structured Output -

Temperature Control No

Open Weights No

Input Cost / 1M tokens -

Output Cost / 1M tokens -

Reasoning Cost / 1M tokens -

Cache Read Cost / 1M tokens -

Cache Write Cost / 1M tokens -