Vercel AI Updates: September 3, 2026

1. Muse Spark 1.3 Arrives on AI Gateway With a Contributor Pricing Tier

Vercel. Meta’s Muse Spark 1.3 is now routable through AI Gateway, with a 1M token context window and text, image, and PDF input. Vercel describes it as taking fewer turns and writing less filler than the previous release on coding work. Two tiers ship with identical weights: standard at $1.25 per million input tokens and $4.25 per million output tokens with $0.15 cached input, and a contributor tier at $0.10 input and $0.20 output ($0.002 cached) where Meta uses inputs and outputs for model training in exchange for the lower price. Source

2. Gemini 3.8 Flash Added to AI Gateway

Vercel. Google’s newly released Gemini 3.8 Flash is available through AI Gateway on launch day, giving AI SDK users access without a separate Google API integration. Source

3. GLM-5.3 Is Half Price Through DigitalOcean on AI Gateway

Vercel. AI Gateway is offering GLM-5.3 at 50% off when routed through DigitalOcean as the provider. Source