GPT-6 Astra Max vs Muse Spark 1.3 Max compared

GPT-6 Astra Max leads the intelligence index 56.9 to 36.6. Muse Spark 1.3 Max costs 90% less on blended price. See token costs, speed and which to pick.

Metric	GPT-6 Astra (Max)	Muse Spark 1.3 (Max)
Intelligence Index	56.9	36.6
Input price (per 1M tokens)	$10.00	$1.25
Output price (per 1M tokens)	$50.00	$4.25
Output speed (tokens/s)	46	140
Time to first token	6.8 min	36s
Release date	2026-09-03	2026-09-02

Metric

GPT-6 Astra (Max)

Muse Spark 1.3 (Max)

Intelligence Index

56.9

36.6

Input price (per 1M tokens)

$10.00

$1.25

Output price (per 1M tokens)

$50.00

$4.25

Output speed (tokens/s)

140

Time to first token

6.8 min

36s

Release date

2026-09-03

2026-09-02

Comparing GPT-6 Astra (Max) with Muse Spark 1.3 (Max) is really a question of how much capability you are willing to give up, and what you get back for it. The figures come from tracked catalogue data, not from our own testing, so treat them as a starting point for a trial on your tasks. The headline gap is on the intelligence index, where GPT-6 Astra Max scores 56.9 and Muse Spark 1.3 Max 36.6.

GPT-6 Astra Max leads on the intelligence index

GPT-6 Astra Max comes out ahead on the intelligence index, 56.9 to 36.6. A gap this large suggests the two are built for different jobs. Put another way, Muse Spark 1.3 Max would need 55% more on this index to draw level.

For context, that places GPT-6 Astra Max 5th and Muse Spark 1.3 Max 36th out of 109 scored models still on offer.

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

Token pricing and a sample bill

Per million tokens, GPT-6 Astra Max charges $10.00 for input and $50.00 for output, while Muse Spark 1.3 Max charges $1.25 and $4.25. GPT-6 Astra Max costs 12 times as much per output token.

A reference job of 1 million input tokens and 200,000 output tokens costs $20.00 with GPT-6 Astra Max and $2.10 with Muse Spark 1.3 Max, so Muse Spark 1.3 Max saves $17.90. For a support assistant answering 10,000 conversations of 2,000 input and 500 output tokens each, Muse Spark 1.3 Max would come in 90% lower: $450 for GPT-6 Astra Max against $46.25 for Muse Spark 1.3 Max. On a 3:1 blend of input to output tokens, that works out to $20.00 versus $2.00 per million.

Release timing

Muse Spark 1.3 Max came first, on September 2, 2026; GPT-6 Astra Max followed on September 3, 2026. That is close enough to count them as the same generation.

How fast they respond

Measured output speed is 46 tokens per second for GPT-6 Astra Max and 140 tokens per second for Muse Spark 1.3 Max. Muse Spark 1.3 Max is ahead by 204% on throughput. Before any text appears, GPT-6 Astra Max takes 6.8 minutes and Muse Spark 1.3 Max 36 seconds. Muse Spark 1.3 Max gets to its first token 11 times as fast. Waits that long are felt on every chat-style request, though they matter less for batch jobs.

Add the two numbers up for a 1,000-token reply and Muse Spark 1.3 Max finishes first: 7.2 minutes for GPT-6 Astra Max, 43 seconds for Muse Spark 1.3 Max.

Cost per point of intelligence

A blunt value measure, blended price over intelligence score, puts GPT-6 Astra Max at $0.35 and Muse Spark 1.3 Max at $0.055 per point. GPT-6 Astra Max costs 6.4 times as much per point, which is the price of its lead.

FAQ

Is GPT-6 Astra Max better than Muse Spark 1.3 Max?

It depends on what you need: GPT-6 Astra Max scores higher on the intelligence index, 56.9 to 36.6; Muse Spark 1.3 Max is 90% cheaper on blended price; and Muse Spark 1.3 Max streams output 3 times as fast.

Which is newer, GPT-6 Astra Max or Muse Spark 1.3 Max?

GPT-6 Astra Max is newer. It was released on September 3, 2026, one day after Muse Spark 1.3 Max (September 2, 2026).

Which is faster, GPT-6 Astra Max or Muse Spark 1.3 Max?

Muse Spark 1.3 Max generates output faster, at 140 tokens per second against 46 tokens per second. Muse Spark 1.3 Max reaches its first token sooner (36 seconds against 6.8 minutes).

Who makes GPT-6 Astra Max and Muse Spark 1.3 Max?

GPT-6 Astra Max is made by OpenAI and Muse Spark 1.3 Max by Meta. GPT-6 Astra Max was released on September 3, 2026 and Muse Spark 1.3 Max on September 2, 2026.

Was this comparison tested by hand?

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.

Final whistle

Short answer: Muse Spark 1.3 Max is the stronger all-round pick on this data, while GPT-6 Astra Max makes sense in narrower cases. Pick GPT-6 Astra Max if you need the higher overall score (56.9 against 36.6). Pick Muse Spark 1.3 Max if cost matters ($4.25 against $50.00 per million output tokens) and users are waiting on the first word.

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 Muse Spark 1.3 (Max) pages. The AI Benchmark methodology explains how that data is collected and shown.