Meta
Open model and subscription agent model, split access.

Muse Spark Open — Meta's open-weight general model, licence to confirm
Meta's open release on 15 Oct, for general, coding and multimodal use.
Access: Open-weight · Price: Not published in the sources checked
Open-weightChat / CodingRead ↗

Muse Wonder and Wonder Full — weaker model by API, stronger by subscription only
Meta is directing users from Meta AI toward Muse Wonder. Only the weaker model is available via API; the strongest is subscription-only so far.
Access: API + Subscription · Price: No pay-as-you-go API price announced for Wonder Full; available via two Muse Code subscription tiers
API + SubscriptionChat / AgentsRead ↗
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