Last checked 27 Oct 2026

OpenAI API prices

OpenAI has 4 models in this ledger. Each price is the rate named on the row, copied from that model's official page. If the page does not publish a number, the cell is n/a. Each row keeps its own updated date. ModelMeter does not sell OpenAI access.

Models and prices

OpenAI API list prices
Model	Input	Output	Rate	Context	Max output	Updated	Source
GPT-6 AstraActive	$10.00	$50.00	Standard, under 272K	1.05M	128k	27 Oct 2026	GPT-6 Astra Price source
GPT-6.1 SolActive	$2.00	$10.00	Standard, under 272K	1.05M	128k	27 Oct 2026	GPT-6.1 Sol Price source
GPT-6.1 TerraActive	$1.00	$5.00	Standard, under 272K	1.05M	128k	27 Oct 2026	GPT-6.1 Terra Price source
GPT-6 LunaActive	$0.10	$0.50	Standard, under 272K	1.05M	128k	27 Oct 2026	GPT-6 Luna Price source

GPT-6 Astra
OpenAI · Active
GPT-6 Astra Price source
Input
$10.00
Output
$50.00
Context
1.05M
Max output
128k
Standard, under 272K
Updated 27 Oct 2026
GPT-6.1 Sol
OpenAI · Active
GPT-6.1 Sol Price source
Input
$2.00
Output
$10.00
Context
1.05M
Max output
128k
Standard, under 272K
Updated 27 Oct 2026
GPT-6.1 Terra
OpenAI · Active
GPT-6.1 Terra Price source
Input
$1.00
Output
$5.00
Context
1.05M
Max output
128k
Standard, under 272K
Updated 27 Oct 2026
GPT-6 Luna
OpenAI · Active
GPT-6 Luna Price source
Input
$0.10
Output
$0.50
Context
1.05M
Max output
128k
Standard, under 272K
Updated 27 Oct 2026

Same-tier comparisons

These pairs put a OpenAI model next to a model from another provider with a published input rate and output rate in the same tier.

Claude Fable 5.1 vs GPT-6 Astra · Anthropic and OpenAI
Claude Haiku 5.5 vs GPT-6 Luna · Anthropic and OpenAI
Claude Sonnet 5.5 vs GPT-6.1 Sol · Anthropic and OpenAI
Gemini 4 Argon vs GPT-6.1 Sol · Google and OpenAI
GPT-6.1 Terra vs Muse Spark Open · OpenAI and Together AI
GPT-6.1 Terra vs Mistral Large 4 · OpenAI and Mistral

Models and prices

Same-tier comparisons

Other providers