Claude Fable 5.1 Xhigh vs Muse Spark 1.3 Max compared

Claude Fable 5.1 Xhigh leads the intelligence index 50.0 to 36.6. Muse Spark 1.3 Max costs 90% less on blended price. See token costs, speed and which to pick.

Metric	Claude Fable 5.1 (Xhigh, Default Fallback)	Muse Spark 1.3 (Max)
Intelligence Index	50.0	36.6
Input price (per 1M tokens)	$10.00	$1.25
Output price (per 1M tokens)	$50.00	$4.25
Output speed (tokens/s)	61	140
Time to first token	98s	36s
Release date	2026-09-01	2026-09-02

Metric

Claude Fable 5.1 (Xhigh, Default Fallback)

Muse Spark 1.3 (Max)

Intelligence Index

50.0

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

98s

36s

Release date

2026-09-01

2026-09-02

Claude Fable 5.1 (Xhigh, Default Fallback) (Anthropic) and Muse Spark 1.3 (Max) (Meta) are not peers on the headline index, which makes the trade-offs the interesting part. This page is written automatically from catalogue numbers only: benchmark scores, list prices and measured speed. The sharpest difference is price: Muse Spark 1.3 Max costs $4.25 per million output tokens, against $50.00 for Claude Fable 5.1 Xhigh.

Token pricing and a sample bill

Claude Fable 5.1 Xhigh lists $10.00 per million input tokens and $50.00 per million output tokens; Muse Spark 1.3 Max lists $1.25 and $4.25. Claude Fable 5.1 Xhigh costs 12 times as much per output token.

Take 1 million input tokens and 200,000 output tokens: that comes to $20.00 on Claude Fable 5.1 Xhigh and $2.10 on Muse Spark 1.3 Max. Scale it up to classifying 100,000 short messages at 150 input tokens and 5 output tokens each and the bill is $175 for Claude Fable 5.1 Xhigh against $20.88 for Muse Spark 1.3 Max. Blended at three input tokens per output token, the effective rates are $20.00 for Claude Fable 5.1 Xhigh and $2.00 for Muse Spark 1.3 Max.

How fast they respond

Once a response is under way, Claude Fable 5.1 Xhigh produces roughly 61 tokens per second against 140 tokens per second for Muse Spark 1.3 Max. Muse Spark 1.3 Max is ahead by 129% on throughput. Time to first token is 98 seconds for Claude Fable 5.1 Xhigh and 36 seconds for Muse Spark 1.3 Max. Claude Fable 5.1 Xhigh waits 2.7 times as long before its first token. A first-token wait of that length suits background work better than live conversation.

For a 1,500-token response, first token plus generation comes to roughly 2.0 minutes on Claude Fable 5.1 Xhigh and 47 seconds on Muse Spark 1.3 Max.

Benchmark scores

Claude Fable 5.1 Xhigh comes out ahead on the intelligence index, 50.0 to 36.6. A difference this size usually separates one tier of model from the next. In relative terms, Claude Fable 5.1 Xhigh scores 37% higher.

Among 109 active scored models, Claude Fable 5.1 Xhigh sits 18th and Muse Spark 1.3 Max 36th.

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

Value for money

Per point of intelligence index, Claude Fable 5.1 Xhigh costs $0.40 of blended price per million tokens and Muse Spark 1.3 Max $0.055. Muse Spark 1.3 Max delivers each index point for 86% less; whether Claude Fable 5.1 Xhigh's extra 13.4 points are worth the premium depends on how often your tasks need them.

Generation gap

Muse Spark 1.3 Max arrived on September 2, 2026, one day after Claude Fable 5.1 Xhigh (September 1, 2026). They are effectively contemporaries.

Quick answers

Is Muse Spark 1.3 Max better than Claude Fable 5.1 Xhigh?

Neither wins everywhere: Claude Fable 5.1 Xhigh scores higher on the intelligence index, 50.0 to 36.6; Muse Spark 1.3 Max is 90% cheaper on blended price; and Muse Spark 1.3 Max streams output 2.3 times as fast.

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.

When were Claude Fable 5.1 Xhigh and Muse Spark 1.3 Max released?

Muse Spark 1.3 Max is newer. It was released on September 2, 2026, one day after Claude Fable 5.1 Xhigh (September 1, 2026).

Which is faster, Claude Fable 5.1 Xhigh or Muse Spark 1.3 Max?

Muse Spark 1.3 Max generates output faster, at 140 tokens per second against 61 tokens per second. Muse Spark 1.3 Max reaches its first token sooner (36 seconds against 98 seconds).

Who makes Claude Fable 5.1 Xhigh and Muse Spark 1.3 Max?

Claude Fable 5.1 Xhigh is made by Anthropic and Muse Spark 1.3 Max by Meta. Claude Fable 5.1 Xhigh was released on September 1, 2026 and Muse Spark 1.3 Max on September 2, 2026.

Final whistle

Bottom line: Muse Spark 1.3 Max has more going for it here, but Claude Fable 5.1 Xhigh is not without an argument. Pick Muse Spark 1.3 Max if cost matters ($4.25 against $50.00 per million output tokens) and long outputs need to finish quickly. Pick Claude Fable 5.1 Xhigh if you need the higher overall score (50.0 against 36.6).

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 Claude Fable 5.1 (Xhigh, Default Fallback) and Muse Spark 1.3 (Max) pages. The AI Benchmark methodology explains how that data is collected and shown.