GPT-5.4 vs GPT-5.6 Sol

GPT-5.4 leads in 5 of 8 categories

Arena ELO

GPT-5.4

Cheaper

GPT-5.4

Faster

GPT-5.4

Detailed Comparison

Category	GPT-5.4	GPT-5.6 Sol
Provider	OpenAI	OpenAI
Context Window	1M WIN	128K
Input Price ($/1M)	$3 WIN	N/A
Output Price ($/1M)	$15 WIN	N/A
Arena ELO	1560 WIN	N/A
Coding	unknown	N/A
Reasoning	unknown	N/A
Speed (tokens/sec)	~50 t/s WIN	N/A
Open Source	No	No

Frequently Asked Questions

Which is better for coding, GPT-5.4 or GPT-5.6 Sol?

GPT-5.4 scores unknown on coding benchmarks, while GPT-5.6 Sol scores N/A.

Which has a larger context window?

GPT-5.4 supports 1M context, while GPT-5.6 Sol supports 128K.

Is GPT-5.4 or GPT-5.6 Sol open source?

GPT-5.4 is proprietary. GPT-5.6 Sol is proprietary.

Related Articles

OpenAI narrows GPT-5.6 rollout after U.S. request

GPT-5.6 rumors point to 2M context and coding gains

GPT-5.6 looks like a fix-and-upgrade release

GPT-5.4 lands with Pro, Thinking, mini, nano

GPT-5.6先追前端，再谈超越Mythos

What We Know About GPT-5.6's Release Date

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