GPT-5.6 Terra (Max) vs GPT-6.1 Sol (Max)

Which is better for the money: GPT-5.6 Terra (Max) by OpenAI or GPT-6.1 Sol (Max) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-24.

Clear winner

OpenAIGPT-5.6 Terra (Max)Off the frontier

Intelligence: 42.10
Total cost: $2501

OpenAIGPT-6.1 Sol (Max)On the frontier

Intelligence: 51.80
Total cost: $1082

Verdict

Pick GPT-6.1 Sol (Max)

GPT-6.1 Sol (Max) vs GPT-5.6 Terra (Max): 23.0% more intelligence, 56.8% less cost to run the AA benchmark, and 110.0% slower end-to-end.

Metric	GPT-5.6 Terra (Max)	GPT-6.1 Sol (Max)	Difference
Intelligence (higher is better)	42.1	51.8	+23.0% GPT-6.1 Sol (Max) is 23.0% more intelligent
Total AA cost (lower is better)	$2,500.72	$1,081.55	−56.8% GPT-6.1 Sol (Max) is 56.8% cheaper
End-to-end time (lower is better)	104.98s	220.48s	+110.0% GPT-6.1 Sol (Max) is 110.0% slower
Price per 1M tokens (in / out)	$2.00 / $12.0	$2.00 / $10.0
Input modalities	Text, Image	Text, Image

Open this matchup in the interactive picker GPT-5.6 Terra (Max): what beats it GPT-6.1 Sol (Max): what beats it

Today's Pareto frontier

Against the frontier

GPT-5.6 Terra (Max) is off the frontier: at the same or lower cost, Claude Opus 5.5 (High, Default Fallback) scores 53.60 for $2172.
GPT-6.1 Sol (Max) is on today's frontier: nothing is both smarter and cheaper.

GPT-5.6 Terra (Max)GPT-6.1 Sol (Max)Today's Pareto frontierEvery other model

Matchup

Compare something else

Agents: Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-5-6-terra/gpt-6-1-sol · Markdown: /api/v1/compare/gpt-5-6-terra/gpt-6-1-sol?format=md · llms.txt · agent skill