Muse Spark
Summary
Meta's multimodal reasoning model that matches older flagship performance at a fraction of the compute cost, available free through meta.ai.
Muse Spark is a reasoning-focused language model designed to handle complex analysis across text, images, and data—medical imaging, scientific reasoning, chart interpretation. It sits in the space where users need reliable multimodal reasoning without the latency or cost of frontier models. The headline differentiator is architectural efficiency: Meta claims comparable output quality to older Llama 4 using an order of magnitude less compute. Pricing is freemium (free tier via meta.ai and the Meta AI app; paid tiers not publicly detailed). The significant catch: Meta has acknowledged it struggles with multi-step agent workflows and coding tasks, and there is no public API—only private preview access for select enterprise partners with no announced timeline for broader availability.
Bottom line: *Use for free medical and scientific analysis when API access isn't required; skip if you need reliable agentic workflows or production integrations.*
Pricing Plans
Free|Usage-Based- Price
- Free (consumer), API pricing TBD
- Free Tier
- All modes are free to use, though Meta may impose rate limits
Consumer Free
Free access through meta.ai and Meta AI app
- Instant mode
- Thinking mode
- Contemplating mode (rolling out)
API (Private Preview)
Private API preview available to select enterprise partners; paid API access coming later
- API access
- Enterprise support
View full pricing on meta.ai →
Pricing may have changed since last verified. Check the official site for current plans.
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Pros
Sign in to edit- Completely free access through meta.ai and Meta AI app
- Improved training techniques enable comparable performance to older Llama 4 with an order of magnitude less compute
- Contemplating mode orchestrates multiple agents in parallel, competing with extreme reasoning modes of frontier models
- Strong performance on medical and scientific benchmarks, including CharXiv, HealthBench Hard, and FrontierScience
Cons
Sign in to edit- Meta acknowledged gaps in multi-step agent tasks and coding workflows, with weak performance on Terminal-Bench 2.0
- No public API; private preview is only available to select enterprise partners with no confirmed broader access date
- Proprietary model with no weights available and no fine-tuning access, marking a departure from Meta's open-source Llama legacy
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About
- Platforms
- Meta AI app, meta.ai website, and rolling out to WhatsApp, Instagram, Facebook, Messenger, and Meta AI glasses in coming weeks
- API Available
- Yes
- Self-Hosted
- No
- Last Updated
- 2026-04-22T17:02:12.366Z
Best For
Who it's for
- Health queries, science, and chart analysis
- Multimodal reasoning, health tasks, and scientific problems
- Complex reasoning and multimodal tasks within Meta's ecosystem
- Scientific and medical reasoning benchmarks
What it does well
- Visual STEM question answering
- Health information explanation and nutritional analysis
- Complex reasoning and coding tasks
- Product analysis and comparison from photos
- Custom website and mini-game creation from prompts
Integrations
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Frequently Asked Questions
- Is Muse Spark free?
- Muse Spark is a paid tool (Free (consumer), API pricing TBD). No permanent free tier is offered.
- Is Muse Spark open source?
- No — Muse Spark is a closed-source tool. Source code is not publicly available.
- Does Muse Spark have an API?
- Yes. Muse Spark exposes a developer API. See the official documentation at https://meta.ai for details.
- When was Muse Spark released?
- Muse Spark was first released in 2026.
- What platforms does Muse Spark support?
- Muse Spark is available on: Meta AI app, meta.ai website, and rolling out to WhatsApp, Instagram, Facebook, Messenger, and Meta AI glasses in coming weeks.
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