GPT-6.1 Sol Max vs GPT-6 Luna Max: benchmark scores compared

GPT-6.1 Sol Max leads the intelligence index 54.6 to 27.9. Price per token, response speed and when to pick each.

Metric	GPT-6.1 Sol (Max)	GPT-6 Luna (Max)
Intelligence Index	54.6	27.9
Input price (per 1M tokens)	$2.00	$0.10
Output price (per 1M tokens)	$10.00	$0.50
Output speed (tokens/s)	60	121
Time to first token	5.4 min	2.0 min
Release date	2026-09-29	2026-09-22

Metric

GPT-6.1 Sol (Max)

GPT-6 Luna (Max)

Intelligence Index

54.6

27.9

Input price (per 1M tokens)

$2.00

$0.10

Output price (per 1M tokens)

$10.00

$0.50

Output speed (tokens/s)

121

Time to first token

5.4 min

2.0 min

Release date

2026-09-29

2026-09-22

GPT-6.1 Sol (Max) and GPT-6 Luna (Max) both come from OpenAI, so this is a choice inside one lineup rather than between vendors. Everything below is read from the benchmark, price and speed data in Franklin AI's catalogue; nothing here comes from a hands-on test. GPT-6.1 Sol Max leads the intelligence index 54.6 to 27.9, a gap of 26.7 points.

Overall capability: 26.7 points apart

GPT-6.1 Sol Max records 54.6 on the intelligence index and GPT-6 Luna Max records 27.9. A gap this large suggests the two are built for different jobs. In relative terms, GPT-6.1 Sol Max scores 96% higher.

For context, that places GPT-6.1 Sol Max 8th and GPT-6 Luna Max 62nd out of 109 scored models still on offer.

For coding or maths work specifically, the catalogue has no dedicated index on either side yet.

When they came out

GPT-6.1 Sol Max arrived on September 29, 2026, 7 days after GPT-6 Luna Max (September 22, 2026). That is close enough to count them as the same generation.

Waiting time

GPT-6.1 Sol Max generates about 60 tokens per second and GPT-6 Luna Max about 121 tokens per second. On long outputs, that is a real advantage for GPT-6 Luna Max. Time to first token is 5.4 minutes for GPT-6.1 Sol 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.

Add the two numbers up for a 1,000-token reply and GPT-6 Luna Max finishes first: 5.7 minutes for GPT-6.1 Sol Max, 2.2 minutes for GPT-6 Luna Max.

Price per token

Per million tokens, GPT-6.1 Sol Max charges $2.00 for input and $10.00 for output, while GPT-6 Luna Max charges $0.10 and $0.50. For output tokens, GPT-6.1 Sol Max is 20 times the price of GPT-6 Luna Max.

Take 1 million input tokens and 200,000 output tokens: that comes to $4.00 on GPT-6.1 Sol Max and $0.20 on GPT-6 Luna Max. For classifying 100,000 short messages at 150 input tokens and 5 output tokens each, GPT-6 Luna Max would come in 95% lower: $35.00 for GPT-6.1 Sol Max against $1.75 for GPT-6 Luna Max. Blended at three input tokens per output token, the effective rates are $4.00 for GPT-6.1 Sol Max and $0.20 for GPT-6 Luna Max.

Cost per point of intelligence

Per point of intelligence index, GPT-6.1 Sol Max costs $0.073 of blended price per million tokens and GPT-6 Luna Max $0.0072. GPT-6 Luna Max delivers each index point for 90% less; whether GPT-6.1 Sol Max's extra 26.7 points are worth the premium depends on how often your tasks need them.

FAQ

Is GPT-6.1 Sol Max better than GPT-6 Luna Max?

Not across the board: GPT-6.1 Sol Max scores higher on the intelligence index, 54.6 to 27.9; GPT-6 Luna Max is 95% cheaper on blended price; and GPT-6 Luna Max streams output twice as fast.

Which is newer, GPT-6.1 Sol Max or GPT-6 Luna Max?

GPT-6.1 Sol Max is newer. It was released on September 29, 2026, 7 days after GPT-6 Luna Max (September 22, 2026).

Are GPT-6.1 Sol Max and GPT-6 Luna Max from the same company?

Both are OpenAI models, listed as separate models in the catalogue. GPT-6.1 Sol Max was released on September 29, 2026 and GPT-6 Luna Max on September 22, 2026.

Which is cheaper, GPT-6.1 Sol Max or GPT-6 Luna Max?

GPT-6 Luna Max is cheaper on a blended basis. GPT-6.1 Sol Max lists $2.00 per million input tokens and $10.00 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 $4.00 against $0.20.

Which is faster, GPT-6.1 Sol Max or GPT-6 Luna Max?

GPT-6 Luna Max generates output faster, at 121 tokens per second against 60 tokens per second. GPT-6 Luna Max reaches its first token sooner (2.0 minutes against 5.4 minutes).

Final whistle

Short answer: on balance the numbers favour GPT-6.1 Sol Max, though GPT-6 Luna Max keeps a case of its own. Pick GPT-6.1 Sol Max if you need the higher overall score (54.6 against 27.9). Pick GPT-6 Luna Max if cost matters ($0.50 against $10.00 per million output tokens) and long outputs need to finish quickly.

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-6.1 Sol (Max) and GPT-6 Luna (Max) pages. The AI Benchmark methodology explains how that data is collected and shown.