# Moonshot AI vs Meta

> A lab that opened its flagship against one that moved to a closed API. Kimi K3 is the stronger open coder; Meta's Muse Spark is cheaper and bundles media on one key.

Canonical: https://www.subconscious.dev/compare/moonshot-ai-vs-meta · By The Subconscious Team · Updated September 30, 2026

## How they compare

Meta and Moonshot have moved in opposite directions. Meta shifted from open Llama releases to a closed API for its Muse family, keeping only Muse Glimmer, a distilled model, as open weights. Moonshot published full weights for Kimi K3, its flagship. On price, Meta's Muse Spark 1.3 costs $1.25 in and $4.25 out with a 1M window, well under K3's $3 in and $15 out. Both target agentic coding, but only K3 comes with independent coding results in its listing, including 93.4% on SWE-bench Verified from Vals AI and third place on the Artificial Analysis Intelligence Index.

Meta's API is broader in scope. The same key serves Muse Image at $0.01 per image, Muse Voice Transcribe at $0.18 per hour of audio and web search grounding, and it speaks OpenAI, Anthropic and stateful agentic formats. Its Contributor tier is near-free if Meta may train on your data. Moonshot's strengths are open weights and a 1M context built for repo-scale work, with Kimi Code for terminal users. K3's costs are its 33 tokens per second and verbosity. Meta's is maturity, since its API is still in public preview.

## What each one does

### Moonshot AI

Moonshot AI is the Beijing lab behind the Kimi models. Its flagship Kimi K3 launched July 16, 2026 as a 2.8 trillion parameter mixture-of-experts model that activates 16 of 896 experts per token, with native vision and a 1M token context. It is the first open model in the 3T class, and full weights landed on Hugging Face on July 27. The hosted API costs $3 in and $15 out per million tokens, with cached input at $0.30, and it runs through an OpenAI-compatible endpoint, Kimi Code in the terminal, OpenRouter and Cloudflare Workers AI.

### Meta

Meta has moved from open Llama releases toward its own closed API. Meta Superintelligence Labs builds the Muse family, and in July 2026 Meta opened a public preview of the Meta Model API with Muse Spark 1.1, a multimodal reasoning model aimed at agentic coding, tool use and computer use. The current lineup runs through Muse Spark 1.3 with a 1M token context. Standard pricing is $1.25 in and $4.25 out per million tokens, with cached input at $0.15, and the endpoint speaks OpenAI Chat Completions, Anthropic Messages and a stateful agentic format.

## Which is best, and when

### Choose Moonshot AI for

- Coding agents that need the strongest open model
- Self-hosting or fine-tuning flagship-class weights
- Repo-scale work that uses the full 1M window

### Choose Meta for

- Cost-sensitive agents at $1.25 in and $4.25 out
- Apps that need image generation and transcription on one key
- Prototypes on the Contributor tier when data sharing is acceptable

## At a glance

| Attribute | Moonshot AI | Meta |
|---|---|---|
| Model access | Open weights, custom license | Closed API; open Muse Glimmer |
| Flagship models | Kimi K3, Kimi K2.6 | Muse Spark 1.3, Muse Glimmer |
| Speed | ~33 tok/s on Kimi K3 | ~145–233 tok/s on Muse Spark 1.3 |
| Price | $3 in, $15 out (Kimi K3) | $1.25 in, $4.25 out; Contributor tier cheaper |
| Customization | Open weights to fine-tune | Open Muse Glimmer weights to fine-tune |
| Deployment | API, Kimi Code, OpenRouter | Meta Model API (preview) |
| Long context | 1M | 1M |

## FAQ

### What is the difference between Moonshot AI and Meta?

A lab that opened its flagship against one that moved to a closed API. Kimi K3 is the stronger open coder; Meta's Muse Spark is cheaper and bundles media on one key.

### When should I choose Moonshot AI over Meta?

Coding agents that need the strongest open model; Self-hosting or fine-tuning flagship-class weights; Repo-scale work that uses the full 1M window.

### When should I choose Meta over Moonshot AI?

Cost-sensitive agents at $1.25 in and $4.25 out; Apps that need image generation and transcription on one key; Prototypes on the Contributor tier when data sharing is acceptable.

### Is Moonshot AI or Meta cheaper?

Moonshot AI: $3 in, $15 out (Kimi K3). Meta: $1.25 in, $4.25 out; Contributor tier cheaper. The cheaper choice depends on the model and workload.

### Which has more context, Moonshot AI or Meta?

Moonshot AI: 1M. Meta: 1M.

## Running long-horizon agents?

If your agents run past 200K tokens, compare both against Subconscious: [Subconscious vs Moonshot AI](https://www.subconscious.dev/compare/subconscious-vs-moonshot-ai.md), [Subconscious vs Meta](https://www.subconscious.dev/compare/subconscious-vs-meta.md).

Full profiles: [Moonshot AI](https://www.subconscious.dev/providers/moonshot-ai.md), [Meta](https://www.subconscious.dev/providers/meta.md).