GPT-6 Astra Max vs GPT-6 Luna Max compared

GPT-6 Astra Max leads the intelligence index 56.9 to 27.9. GPT-6 Luna Max costs 99% less on blended price. See token costs, speed and which to pick.

Metric	GPT-6 Astra (Max)	GPT-6 Luna (Max)
Intelligence Index	56.9	27.9
Input price (per 1M tokens)	$10.00	$0.10
Output price (per 1M tokens)	$50.00	$0.50
Output speed (tokens/s)	46	121
Time to first token	6.8 min	2.0 min
Release date	2026-09-03	2026-09-22

Metric

GPT-6 Astra (Max)

GPT-6 Luna (Max)

Intelligence Index

56.9

27.9

Input price (per 1M tokens)

$10.00

$0.10

Output price (per 1M tokens)

$50.00

$0.50

Output speed (tokens/s)

121

Time to first token

6.8 min

2.0 min

Release date

2026-09-03

2026-09-22

If you already build on OpenAI, both GPT-6 Astra (Max) and GPT-6 Luna (Max) are on the menu, and they are not interchangeable. This page is written automatically from catalogue numbers only: benchmark scores, list prices and measured speed. Price separates them more than anything else; on a blended basis GPT-6 Astra Max costs 100 times as much as GPT-6 Luna Max.

Running costs

GPT-6 Astra Max lists $10.00 per million input tokens and $50.00 per million output tokens; GPT-6 Luna Max lists $0.10 and $0.50. GPT-6 Astra Max costs 100 times as much per output token.

Take 1 million input tokens and 200,000 output tokens: that comes to $20.00 on GPT-6 Astra Max and $0.20 on GPT-6 Luna Max. A bigger example, summarising 1,000 documents of 8,000 tokens into 400-token summaries, costs $100 on GPT-6 Astra Max and $1.00 on GPT-6 Luna Max: a gap of $99.00. On a 3:1 blend of input to output tokens, that works out to $20.00 versus $0.20 per million.

GPT-6 Astra Max leads on the intelligence index

GPT-6 Astra Max comes out ahead on the intelligence index, 56.9 to 27.9. These scores put the two models in different leagues on overall capability. In relative terms, GPT-6 Astra Max scores 104% higher.

Among 109 active scored models, GPT-6 Astra Max sits 5th and GPT-6 Luna Max 62nd.

The catalogue does not yet split either model's score into coding and math indexes.

Is the price in proportion?

Dividing the blended price by the intelligence index gives a rough cost per point: $0.35 for GPT-6 Astra Max and $0.0072 for GPT-6 Luna Max, per million tokens. GPT-6 Luna Max delivers each index point for 98% less; whether GPT-6 Astra Max's extra 29.0 points are worth the premium depends on how often your tasks need them.

Generation gap

GPT-6 Astra Max came first, on September 3, 2026; GPT-6 Luna Max followed on September 22, 2026. That is close enough to count them as the same generation.

GPT-6 Luna Max is the faster writer

GPT-6 Astra Max generates about 46 tokens per second and GPT-6 Luna Max about 121 tokens per second. That makes GPT-6 Luna Max roughly 2.6 times as fast at writing. Time to first token is 6.8 minutes for GPT-6 Astra Max and 2.0 minutes for GPT-6 Luna Max. In an interactive app, GPT-6 Luna Max will feel noticeably more responsive. A first-token wait of that length suits background work better than live conversation.

For a 2,000-token response, first token plus generation comes to roughly 7.5 minutes on GPT-6 Astra Max and 2.3 minutes on GPT-6 Luna Max.

Common questions about GPT-6 Astra Max and GPT-6 Luna Max

Is GPT-6 Astra Max better than GPT-6 Luna Max?

It depends on what you need: GPT-6 Astra Max scores higher on the intelligence index, 56.9 to 27.9; GPT-6 Luna Max is 99% cheaper on blended price; and GPT-6 Luna Max streams output 2.6 times as fast.

Does GPT-6 Astra Max respond faster than GPT-6 Luna Max?

GPT-6 Luna Max generates output faster, at 121 tokens per second against 46 tokens per second. GPT-6 Luna Max reaches its first token sooner (2.0 minutes against 6.8 minutes).

Where do these numbers come from?

The figures are the recorded benchmark, price and speed data in Franklin AI's model catalogue. This page is written from that data automatically; neither model was tested by hand for it.

Which is newer, GPT-6 Astra Max or GPT-6 Luna Max?

GPT-6 Luna Max is newer. It was released on September 22, 2026, 19 days after GPT-6 Astra Max (September 3, 2026).

How much do GPT-6 Astra Max and GPT-6 Luna Max cost?

GPT-6 Luna Max is cheaper on a blended basis. GPT-6 Astra Max lists $10.00 per million input tokens and $50.00 per million output tokens; GPT-6 Luna Max lists $0.10 and $0.50. For 1 million input and 200,000 output tokens that is $20.00 against $0.20.

Final whistle

The verdict: GPT-6 Luna Max has more going for it here, but GPT-6 Astra Max is not without an argument. Pick GPT-6 Luna Max if cost matters ($0.50 against $50.00 per million output tokens) and long outputs need to finish quickly. Pick GPT-6 Astra Max if you need the higher overall score (56.9 against 27.9).

Where the numbers come from

The scores, speed and prices in this comparison come from independent third-party model evaluations that Franklin AI syncs each day, and the article was written from a snapshot of them. For the latest results, open the GPT-6 Astra (Max) and GPT-6 Luna (Max) pages. The AI Benchmark methodology explains how that data is collected and shown.