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Meta Debuts Muse Spark 1.1 and Its First Paid Developer API, Cracking Agent Arena Top Five

July 14, 2026 at 16:50 EDT

Foundation Models
AI Agents
Software Dev & Coding

Meta Superintelligence Labs on July 9, 2026 released Muse Spark 1.1, a multimodal reasoning model built for agentic work, alongside the public preview of the Meta Model API—the company's first paid developer endpoint—and promptly landed its debut ranking on a closely watched agent leaderboard.

July 9, 2026 · Meta Superintelligence Labs

Muse Spark 1.1: Meta goes closed, agentic and cheap

A multimodal reasoning model built for agentic work debuts alongside the Meta Model API—the company's first paid developer endpoint—and lands its first-ever spot near the top of a closely watched agent leaderboard.

Agent Arena debut, across all labs

token context with self-managed compaction

~1/4

of some rivals' cost per unit

Intelligence Index — where it lands

Score of 51 is an 8-point jump from Muse Spark 1.0, near frontier peers.

Muse
Spark 1.0

Muse
Spark 1.1

GPT-5.4 /
GLM-5.2

Grok 4.5

Built for agentic work

Tool + computer use
desktop, mobile & browser

Multi-agent orchestration
main agent delegates in parallel

Multimodal inputs
images, video & PDFs

Zero-shot MCP
servers & custom skills

STRONG ON AGENTIC WORK

"Complete agentic foundation" — parallel tool calling, 1M context
Viable price for real coding workloads
On par with frontier systems in enterprise evaluations
Fast and capable on long-horizon, computer-use tasks

MIXED ON PURE CODING

Trails top models like Claude Opus 4.8 & GPT-5.5-class systems
Some testers reported failures on harder tasks
API access subject to regional restrictions
Not the strongest option across every scenario

Bottom line: With aggressive pricing, a large context window and a debut near the top of Agent Arena, Meta becomes a more direct rival in the agentic model market — but its standing on demanding coding tasks will shape how far that competitiveness extends.

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