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Muse Spark 1.3

A mid-priced Meta model for long, multi-step jobs and programming. It scores close to the top models.

Last updated October 16, 2026.

Costs here use the prices AI companies charge software developers, so they show relative cost, not your monthly bill. See what ChatGPT, Claude and Gemini charge you.

Made by Meta, the company behind Meta AI. Everyday and cheap.

What it costs

1,000-word essay: $0.01 (about 1 cent)
100 chat messages: $1.60
50-page PDF summary: $0.04 (about 4 cents)

Based on list prices and the assumptions on How we work. Your real cost will differ.

At a glance

Smartness: ★★★★☆ (4 of 5) (our banding of the Artificial Analysis score, where available)
Reads at once: about 1,570 pages (rule of thumb)
Understands: text, pictures, video, files
Free to download and run yourself: No
Free to use: Not free for developers. Free app plans

App plans and prices for Meta AI: see plans.

Best for

programminglong multi-step jobs

Watch out for

Not as cheap as the fast models, and you can't download it.

Frequently asked

How much does Muse Spark 1.3 cost to use?
A 1,000-word essay costs about $0.01 (about 1 cent); summarizing a 50-page PDF about $0.04 (about 4 cents). These are developer (API) prices, not an app subscription.

What is Muse Spark 1.3 best for?
A mid-priced Meta model for long, multi-step jobs and programming. It scores close to the top models.

How much can Muse Spark 1.3 read at once?
About 1,570 pages (a rule of thumb: 1,048,576 tokens at roughly 500 words a page).

Can I download Muse Spark 1.3 for free?
No. It is only available through the maker or other paid services.

Under the hood

Maker	Meta
Price per 1M input tokens	$1.25
Price per 1M output tokens	$4.25
Context size	1.05M tokens (1,048,576)
Artificial Analysis Intelligence Index	48.1 (source, via OpenRouter)
Open weights	No
Speed	Not measured yet
Listed	2026-09-02

Maker's description (technical)

Muse Spark 1.3 is a multimodal reasoning model from Meta for long-running agentic, multi-agent, and coding workflows. It is designed to keep track of information across extended tasks, work through...

View on OpenRouter. Our verdict above is editorial, not benchmarked by us.