What is the best alternative to Muse Spark?

GPT-5.5 is the closest model that scores higher on the BenchLeader Index (64.4 against 64.3).

Is there a cheaper alternative to Muse Spark?

No ranked model within 4 Index points of Muse Spark costs less per token today.

Is there an open-source alternative to Muse Spark?

The best open-weights models on the BenchLeader Index are Kimi K3 (62.1), GLM-5 (60.2) and GLM 5.2 (60.1). You can download and run them yourself; check each licence on its model page.

How are these alternatives chosen?

From the models ranked on the BenchLeader Index today: the ones just above Muse Spark, cheaper ones within 4 points, ones at least 1.5× as fast within 4 points, and the best open-weights models. Prices are list prices blended three input tokens to one output.

Muse Spark alternatives

Data as of 2 Nov 2026 · ranked on the BenchLeader Index

As of 2 Nov 2026, Muse Spark by Meta scores 64.3 on the BenchLeader Index at no list price per 1M tokens blended. GPT-5.5 scores higher (64.4); Kimi K3 is the best open-weights option (62.1).

Scores higher

The closest models above Muse Spark on the Index.

GPT-5.5 OpenAI compare64.4 · $11.25
Claude Sonnet 5.5 Anthropic compare65.1 · $4.00
GPT-6.1 Terra OpenAI compare65.2 · $2.00

Open weights

The best models whose weights you can run yourself.

Kimi K3 Moonshot AI compare62.1 · $6.00
GLM-5 Zhipu AI60.2 · $1.55
GLM 5.2 Zhipu AI60.1 · $2.15

Every alternative side by side

Model	Index	$ / 1M blended	Tokens / s	Why
Muse Spark (this model)	64.3	–	–	–
GPT-6.1 Terra	65.2	$2.00	107	scores higher
Claude Sonnet 5.5	65.1	$4.00	137	scores higher
GPT-5.5	64.4	$11.25	91	scores higher
Kimi K3	62.1	$6.00	66	open weights
GLM-5	60.2	$1.55	62	open weights
GLM 5.2	60.1	$2.15	89	open weights

Prices are list prices blended three input tokens to one output; speeds are measured medians, credited on each model page. The Index is BenchLeader's own, from independent benchmarks.

Questions people ask

What is the best alternative to Muse Spark?: GPT-5.5 is the closest model that scores higher on the BenchLeader Index (64.4 against 64.3).
Is there a cheaper alternative to Muse Spark?: No ranked model within 4 Index points of Muse Spark costs less per token today.
Is there an open-source alternative to Muse Spark?: The best open-weights models on the BenchLeader Index are Kimi K3 (62.1), GLM-5 (60.2) and GLM 5.2 (60.1). You can download and run them yourself; check each licence on its model page.
How are these alternatives chosen?: From the models ranked on the BenchLeader Index today: the ones just above Muse Spark, cheaper ones within 4 points, ones at least 1.5× as fast within 4 points, and the best open-weights models. Prices are list prices blended three input tokens to one output.