Binder / OpenAI / GPT-5.3 Codex Spark OpenAI
GPT-5.3 Codex Spark CTX 128K
Reasoning · Vision · Tools
Text Image PDF Input $1.75/M
Text Output $14/M
Coding-optimized GPT model for repository edits, reviews, and agentic software work
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OpenAI · Text ·
GPT-5.3 Codex Spark Coding-optimized GPT model for repository edits, reviews, and agentic software work
gpt-5.3-codex-sparkCopy ID
Type Text
Quality Not rated yet
Context window 128,000 tokens
Max output 32,000 tokens
Input price $1.75 / 1M tokens
Output price $14.00 / 1M tokens
Cache read $0.17 / 1M tokens
Cache write —
Released Feb 5, 2026
Knowledge cutoff Aug 2025
Takes in Text, Image, PDF
Puts out Text
Reasoning Yes
Tool calling Yes
Structured output Yes
File attachments Yes
Access Paid
License Proprietary
Rarity Rare
Set number 774/1044 Weights aren’t public. Use is governed by OpenAI’s terms. Specs from models.dev, last changed Oct 19, 2026. Official source: platform.openai.com.
How good is it? Public leaderboard scores for GPT-5.3 Codex Spark, refreshed daily from Epoch AI and LMArena.
No public leaderboard lists GPT-5.3 Codex Spark yet. Epoch AI and LMArena cover most chat, image, and video models from the big labs; embeddings, speech, and small open models mostly go unrated.
Where to run it 3 providers sell GPT-5.3 Codex Spark through an API. Prices are per million tokens, cheapest first.
Cheapest OpenAI $1.75 in · $14.00 out Free to try 1 provider Poe From the lab OpenAI $1.75 in · $14.00 out API providers From models.dev and Hugging Face, checked daily. Resellers’ listings can lag behind their price pages, so confirm with the provider before you commit.
Face off Current text models from other labs at a similar output price.
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