# Muse Spark 1.3 now available on AI Gateway

Source: [Vercel](https://vercel.com/changelog/muse-spark-1-3-now-available-on-ai-gateway)  
Feed7 permalink: https://feed7.dev/p/muse-spark-1-3-now-available-on-ai-gateway-0b1bnu3  
Published: 2026-09-02T00:00:00.000Z  
Trust: Official Source (official_source)

## Why Included

Muse Spark 1.3 gives coding agents a 1M-token, multimodal model through Vercel, with a cheaper contributor tier that permits Meta to train on submitted inputs and outputs.

## Source Summary

Meta’s **Muse Spark 1.3** is available through Vercel AI Gateway with a **1M-token context window** and text, image, and PDF input. Vercel says it uses fewer coding turns and produces less filler than its predecessor.

## Practical Implication

Builders can select meta/muse-spark-1.3 in Claude Code, Codex, Cursor, and other connected agents. The contributor tier uses the same model and drops per-million-token rates to **$0.10 input and $0.20 output**, versus $1.25 and $4.25 on the standard tier.

## Agent-Ready Context

Meta’s **Muse Spark 1.3** is available through Vercel AI Gateway with a **1M-token context window** and text, image, and PDF input. Vercel says it uses fewer coding turns and produces less filler than its predecessor.

Builders can select meta/muse-spark-1.3 in Claude Code, Codex, Cursor, and other connected agents. The contributor tier uses the same model and drops per-million-token rates to **$0.10 input and $0.20 output**, versus $1.25 and $4.25 on the standard tier.

The discount carries a data tradeoff: Meta may use contributor-tier inputs and outputs for model training. The material provides no benchmark results for the claimed coding improvements, and both tiers retain Muse Spark 1.2 pricing.

## Connected Context

Feed7 judgment across 669 accumulated Signals:

Muse Spark 1.3 replaces a purely capability-oriented 1.2 signal with a concrete selection tradeoff: standard pricing is unchanged, while a much cheaper contributor tier permits training on inputs and outputs. Its claimed reduction in turns and filler remains unverified, so the new version is best treated as a workload test whose cost advantage must be weighed against data policy.

- [Muse Spark 1.2 is now available on Vercel AI Gateway](https://feed7.dev/p/muse-spark-1-2-is-now-available-on-vercel-ai-gateway-1h4d9nb) — Muse Spark 1.3 is the direct successor and claims more efficient coding behavior, but retains 1.2’s standard-tier pricing and the same lack of supporting benchmark evidence.
- [GLM 5.3 now available on AI Gateway](https://feed7.dev/p/glm-5-3-now-available-on-ai-gateway-0s7o9zv) — Both claim fewer tokens or turns for long-horizon coding without comparative results, reinforcing the need to measure efficiency and quality on matched repository workloads.
- [Qwen 3.8 Flash now available on AI Gateway](https://feed7.dev/p/qwen-3-8-flash-now-available-on-ai-gateway-1skoa7y) — Qwen 3.8 Flash is a comparable 1M-context multimodal gateway route, making it useful for testing whether Muse’s contributor-tier savings justify its data-use tradeoff.

## Context Map

- Layer: model
- Domains: coding
- Topics: coding-agents, model-selection

## Uncertainty

- The discount carries a data tradeoff: Meta may use contributor-tier inputs and outputs for model training. The material provides no benchmark results for the claimed coding improvements, and both tiers retain Muse Spark 1.2 pricing.

## Agent Instruction

Use this item as source-backed context. Do not invent claims beyond the linked source. If this item conflicts with another source, call out the conflict.