GPT-6 Astra, GPT-6 Luna, GPT-6 Sol, GPT-6.1 Sol compared: API price and specs

GPT-6 Luna is 99% cheaper than GPT-6 Astra on input price.

GPT-6 Luna is 99% cheaper than GPT-6 Astra on output price.

GPT-6 Luna is 99% cheaper than GPT-6 Astra on a 1M-in / 200k-out workload.

Field	GPT-6 Astra	GPT-6 Luna	GPT-6 Sol	GPT-6.1 Sol
Lowest input, per 1M	$5.00 +9900%	$0.05	$1.00 +1900%	$1.00 +1900%
Median input, per 1M	$10.00 +9900%	$0.10	$2.00 +1900%	$2.00 +1900%
Lowest output, per 1M	$25.00 +9900%	$0.25	$5.00 +1900%	$5.00 +1900%
Median output, per 1M	$50.00 +9900%	$0.50	$10.00 +1900%	$10.00 +1900%
Lowest unit price	—	—	—	—
Cost of 1M in + 200k out	$10.00 +9900%	$0.10	$2.00 +1900%	$2.00 +1900%
Context	1.1M	1.1M	1.1M	1.1M
Max output	128K	128K	128K	128K
Providers	29	29	28 +3.4%	29
Regions	EU, GLOBAL, US	EU, GLOBAL, US	EU, GLOBAL, US	EU, GLOBAL, 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	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	text	text
Type	Text models	Text models	Text models	Text models
Free option	no	no	no	no
Cheapest provider	openrouter	openrouter	openrouter	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, aiml, amazon-bedrock, azure, cometapi, cortecs, digitalocean, edenai, fastrouter, github-copilot, impossibl, jiekou, kenari, kilo, meganova, nearai, ofox, openai, opencode, openrouter, perplexity-agent, requesty, trustedrouter, vercel, zenmux