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product launch 96% Confidence Gate September 2, 2026

Muse Spark 1.3 now available on AI Gateway

Meta's Muse Spark 1.3 model is now available on Vercel AI Gateway with a 1M token context window and support for text, image, and PDF inputs. The release includes both standard and contributor pricing tiers, with the latter utilizing user data for model training in exchange for lower costs.

Verified State Diff

Comparison Mode:
- Previous State
Availability of Muse Spark 1.2 on AI Gateway.
+ Verified New State
Availability of Muse Spark 1.3 with 1M token context window and multi-modal input support.

Impact & Verification Analysis

WHO IS AFFECTED

Developers building AI-powered coding agents and enterprise users requiring high-context, multi-modal model integration.

WHY IT MATTERS

This release provides a cost-effective, high-context model option for developers, while the contributor tier offers a significant price reduction for organizations willing to share data for model training, directly impacting the economics of scaling AI agents.

Full Fact Overview

The integration of Muse Spark 1.3 into Vercel's AI Gateway provides developers with a model optimized for agentic workflows and coding tasks. The model features a 1M token context window and multi-modal input capabilities. Vercel maintains two pricing tiers: the standard tier (meta/muse-spark-1.3) at $1.25 input/$4.25 output per million tokens, and the contributor tier (meta/muse-spark-1.3-contributor) at $0.10 input/$0.20 output per million tokens. The contributor tier explicitly allows Meta to use submitted data for model training. The model is compatible with existing coding agent setups including Claude Code, Codex, and Cursor.

Multi-Source Evidence Chain (1)

Muse Spark 1.3 now available on AI GatewayVercel
TRACKED ENTITY
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