What is Muse Spark Open?

Muse Spark Open is an AI model by Meta. Muse Spark Open is a coding-optimized open-weight model.

How much does Muse Spark Open cost on Zeplik?

Input tokens cost 15.0 credits per million and output tokens 51.0 credits per million (1 credit = $0.10; the raw provider rates are $1.25 and $4.25 per million). New accounts start with free credits.

How long can a conversation with Muse Spark Open be?

Muse Spark Open has a 1.0M-token context window (1,048,576 tokens), which covers the conversation plus any documents you attach.

Does Muse Spark Open support images and tools?

Muse Spark Open accepts image input and supports tool calling.

Muse Spark Open

General purposeVisionTools

Meta · Released October 2026

Muse Spark Open is a coding-optimized open-weight model.

It belongs to Meta's Muse line, published separately from the Llama family.

Facts and pricing

Provider: Meta
Context window: 1.0M tokens
Input price: 15.0 credits / 1M tokens ($1.25 raw)
Output price: 51.0 credits / 1M tokens ($4.25 raw)
Vision (image input): Yes
Tool calling: Yes
Extended reasoning: No

Credits are what Zeplik bills: 1 credit = $0.10, computed from the raw provider rate with a 1.20x margin. Raw prices shown per 1M tokens.

Try Muse Spark Open now

Or open Zeplik with Muse Spark Open already selected

What Muse Spark Open is best for

Balanced everyday work: writing, questions, brainstorming and summarization
Very long documents and codebases: a 1.0M-token window fits entire books or repositories in one conversation
Working with images: screenshots, charts, photos and scanned documents alongside text
Tool use and agents: reliably calls functions, so it can search, run skills and drive workflows

Example prompts

Prompts that suit a general purpose model like Muse Spark Open:

Help me outline a talk about what I learned this year
Compare these two paragraphs and tell me which is clearer and why
Draft a polite reply declining this invitation
Explain this concept with a concrete everyday analogy

Meta family

Model	Context	Input cr/M	Output cr/M	Released
Muse Spark Open	1.0M	15.0	51.0	October 2026
Muse Wonder	1.0M	48.0	240	October 2026
Muse Glimmer 30B	131K	3.6	14.4	August 2026

Model comparisons

Frequently asked questions

What is Muse Spark Open?: Muse Spark Open is an AI model by Meta. Muse Spark Open is a coding-optimized open-weight model.
How much does Muse Spark Open cost on Zeplik?: Input tokens cost 15.0 credits per million and output tokens 51.0 credits per million (1 credit = $0.10; the raw provider rates are $1.25 and $4.25 per million). New accounts start with free credits.
How long can a conversation with Muse Spark Open be?: Muse Spark Open has a 1.0M-token context window (1,048,576 tokens), which covers the conversation plus any documents you attach.
Does Muse Spark Open support images and tools?: Muse Spark Open accepts image input and supports tool calling.

Related models

Muse WonderFrontier

Muse Wonder is a frontier reasoning model from Meta, designed for complex personal and professional agentic tasks.

1.0M ctx240 cr/M outOctober 2026

Muse Glimmer 30BGeneral purpose

Muse Glimmer 30B is a dense, open-weight multimodal model from Meta Superintelligence Labs, distilled from Muse Spark and optimized for autonomous agents on consumer hardware.

131K ctx14.4 cr/M outAugust 2026

ricursiveAI/Ripple-65B-PreviewGeneral purpose

Ripple-65B-Preview by ricursiveAI, a 65B model with native tool calling, served in BF16.

16K ctx7.2 cr/M outNovember 2026

Hy4General purpose

1.0M ctx15.0 cr/M outNovember 2026

Crouton AlphaGeneral purpose

Crouton Alpha is a lightweight model built for scalable coding, agentic, and multimodal workflows. It's ideal for executing agentic sub-tasks, tool use, and document analysis in high-volume, repeated work.

1.0M ctx0 cr/M outNovember 2026

GLM 5.3 FlashX LegalFast and light

GLM-5.3-FlashX-Legal (GLM-Legal) is Z.ai's legal-domain variant of GLM-5.3-FlashX, a native multimodal model that accepts text, image, and video input and produces text.