GPT-5.6 Sol specs, prices, where it runs and its benchmark standing

Name: GPT-5.6 Sol
Author: OpenAI

closed weights · #10 overall, podium score 17.9 · #1 on 1 board · top 10 on 4 of 10 · released Jul 9, 2026

Provider: OpenAI
Release date: Jul 9, 2026; Boards
Parameters: Not disclosed by OpenAI
Modalities: Text, Image, Files to Text; OpenRouter
License: Proprietary; LMArena
Context window: 1.05M tokens; Pricing
Pricing: $4 in / $20 out per 1M tokens; All prices
Hosting: 8 priced API routes · Azure OpenAI (28 regions) · OpenRouter; Pricing Regions
Weights: Closed weights
Benchmarks: 10 boards captured, #10 overall

Rank	Board	Category	Score	Of
1	Search ArenaAgents and tools · as “GPT-5.6 Sol (xHigh)”	Agents and tools	1,255	40
4	ARC-AGI-2Reasoning · as “GPT-5.6 Sol (Max)”	Reasoning	92.5%	92
5	Document ArenaVision · as “GPT-5.6 Sol (xHigh)”	Vision	1,486	40
9	LiveBenchReasoning · as “gpt-5.6-sol-max”	Reasoning	81.0%	64
11	Epoch ECIReasoning · as “GPT-5.6 Sol”	Reasoning	163.0	100
12	SWE-Bench ProCoding · as “GPT-5.6 Sol (Codex) xhigh”	Coding	82.4%	18
14	Vision ArenaVision · as “GPT-5.6 Sol (xHigh)”	Vision	1,288	85
17	GPQA DiamondReasoning · as “gpt-5.6-sol_max”	Reasoning	93.5%	100
19	Text ArenaChat · as “GPT-5.6 Sol (xHigh)”	Chat	1,485	84
27	WebDev ArenaCoding · as “GPT-5.6 Sol (xHigh, Codex Harness)”	Coding	1,615	82