OpenAI

GPT-5.6

CTX1.05M

Reasoning · Vision · Tools

Input$4/M

Output$20/M

Frontier GPT-5.6 model for complex professional work, coding, and agentic workflows

PaidProprietary943/1040

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OpenAITextHolo rare

GPT-5.6

Frontier GPT-5.6 model for complex professional work, coding, and agentic workflows

gpt-5.6

Type: Text
Quality: Not rated yet
Context window: 1,050,000 tokens
Max output: 128,000 tokens
Input price: $4.00 / 1M tokens
Output price: $20.00 / 1M tokens
Cache read: $0.40 / 1M tokens
Cache write: $5.00 / 1M tokens
Released: Jul 9, 2026
Knowledge cutoff: Feb 2026
Takes in: Text, Image, PDF
Puts out: Text
Reasoning: Yes
Tool calling: Yes
Structured output: Yes
File attachments: Yes
Access: Paid
License: Proprietary
Rarity: Holo rare
Set number: 943/1040

Open OpenAI docs Where to run it 2 Evolution 12/12 Meet its creature Battle Muse Wonder

Weights aren’t public. Use is governed by OpenAI’s terms. Specs from models.dev, last changed Oct 18, 2026. Official source: platform.openai.com.

How good is it?

Public leaderboard scores for GPT-5.6, refreshed daily from Epoch AI and LMArena.

No public leaderboard lists GPT-5.6 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

2 providers sell GPT-5.6 through an API. Prices are per million tokens, cheapest first.

CheapestXpersona$1.50 in · $12.00 out
From the labOpenAI$4.00 in · $20.00 out

API providers

Provider	Input	Output	Context
XpersonaCheapest paid`gpt-5.6`	$1.50	$12.00	372K
OpenAIOfficial`gpt-5.6`	$4.00	$20.00	1.05M

From models.dev and Hugging Face, checked daily. Resellers’ listings can lag behind their price pages, so confirm with the provider before you commit.

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Current text models from other labs at a similar output price.

GPT-5.6

GPT-5.6

How good is it?

Where to run it

API providers

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