gpt-5.6-sol

Name: gpt-5.6-sol
Author: Vercel AI Gateway

proprietary

GPT-5.6 Sol is a flagship model in the GPT-5.6 family. It roughly corresponds to the unsuffixed model tier used in earlier GPT-5 families. The `gpt-5.6` alias routes requests to GPT-5.6 Sol. Reasoning.effort supports: none, low, medium (default), high, xhigh, and max.

Intelligence

Reasoning

Speed

Context

1.1M

Max output

128K

Input price

$4/1M tokens

Output price

$20/1M tokens

Capabilities

Show unsupported (2)

Reasoning & Interaction

Reasoning

Tool Calling

Output Control

Structured Output

JSON Mode

Infrastructure

Streaming

Batch Processing

Details

ProviderVercel AI Gateway

CreatorOpenAI

Familygpt-5.6

Licenseproprietary

Statusactive

Typechat

Input modalitiestext, image

Output modalitiestext

Open weightNo

Parameters—

Architecture—

Context window1.1M tokens

Max input922K tokens

Max output128K tokens

Reasoning tokensYes

Knowledge cutoff2026-02

Release date—

Sourceofficial

Tools

Function Callingfunction_calling

Call external functions and APIs

Pricing

Input

Output

$20

Cache write

—

Cache read

—

Batch in

—

Batch out

—

Family Comparison: gpt-5.6

Model	Caps	Perf	Speed	Context	Max out	Pricing
gpt-5.6-luna	RTJJMSB	—	—	1.1M	128K	$0.2$1.2
gpt-5.6-terra	RTJJMSB	—	—	1.1M	128K	$2$12
gpt-5.6-sol	RTJJMSB	—	—	1.1M	128K	$4$20

API

GET/v1/models/vercel/openai/gpt-5.6-sol