GPT-5.6 Sol vs GPT-5.6 Terra: API price and specs

GPT-5.6 Terra is 33% cheaper than GPT-5.6 Sol on input price.

GPT-5.6 Terra is 80% cheaper than GPT-5.6 Sol on output price.

GPT-5.6 Terra is 60% cheaper than GPT-5.6 Sol on a 1M-in / 200k-out workload.

Field	GPT-5.6 Sol	GPT-5.6 Terra
Lowest input, per 1M	$1.50 +50%	$1.00
Median input, per 1M	$4.00 +100%	$2.00
Lowest output, per 1M	$10.00 +400%	$2.00
Median output, per 1M	$20.00 +66.7%	$12.00
Lowest unit price	$0.001 / request	$0.001 / request
Cost of 1M in + 200k out	$3.50 +150%	$1.40
Context	1.1M	1.1M
Max output	128K	128K
Providers	29	28 +3.4%
Regions	APAC, EU, GLOBAL, US	EU, GLOBAL, IN, US
Accepts	application/pdf, file, image, image/gif, image/jpeg, image/png, image/webp, pdf, text	application/pdf, file, image, image/gif, image/jpeg, image/png, image/webp, pdf, text
Returns	text	text
Type	Text models	Text models
Free option	no	no
Cheapest provider	xpersona	openrouter

Your own workload: how many tokens the model gets (input) and gives back (output) - for example, in a month. The "Cost" row of the table above is recalculated for these numbers, for each model.

Computed from current offers each time the page opens; the best value of a row is bold, the percent is how far behind the best.

Providers selling both

302ai, abacus, aihubmix, amazon-bedrock, azure, azure-cognitive-services, cortecs, digitalocean, edenai, fastrouter, github-copilot, impossibl, jiekou, kenari, kilo, meganova, ofox, openai, opencode, openrouter, orcarouter, perplexity-agent, requesty, standardcompute, trustedrouter, vercel, xpersona, zenmux

Frequently asked questions

Which is cheaper, GPT-5.6 Sol or GPT-5.6 Terra?

GPT-5.6 Terra is 33% cheaper than GPT-5.6 Sol on input price. GPT-5.6 Terra is 80% cheaper than GPT-5.6 Sol on output price. GPT-5.6 Terra is 60% cheaper than GPT-5.6 Sol on a 1M-in / 200k-out workload.

Which has the larger context, GPT-5.6 Sol or GPT-5.6 Terra?

GPT-5.6 Sol: 1.1M tokens; GPT-5.6 Terra: 1.1M tokens.

Where can I use both GPT-5.6 Sol and GPT-5.6 Terra?