GPT-4o vs GPT-5.6 Terra

GPT-4o leads in 4 of 8 categories

Arena ELO

GPT-4o

Cheaper

GPT-4o

Faster

GPT-4o

Detailed Comparison

Category	GPT-4o	GPT-5.6 Terra
Provider	OpenAI	OpenAI
Context Window	128K	128K
Input Price ($/1M)	$2.5 WIN	N/A
Output Price ($/1M)	$10 WIN	N/A
Arena ELO	1285 WIN	N/A
Coding	30.8% SWE-bench	N/A
Reasoning	unknown	N/A
Speed (tokens/sec)	~100 t/s WIN	N/A
Open Source	No	No

Frequently Asked Questions

Which is better for coding, GPT-4o or GPT-5.6 Terra?

GPT-4o scores 30.8% SWE-bench on coding benchmarks, while GPT-5.6 Terra scores N/A.

Which has a larger context window?

GPT-4o supports 128K context, while GPT-5.6 Terra supports 128K.

Is GPT-4o or GPT-5.6 Terra open source?

GPT-4o is proprietary. GPT-5.6 Terra is proprietary.

Related Articles

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

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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