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Request body size limitations for complex payloads

5/10 Medium

Vercel enforces a 4.5MB request body limit, which becomes problematic for AI applications handling large payloads, file uploads, or complex data structures. This constraint requires workarounds like splitting requests or streaming uploads.

Vercelserverless functions
Category
architecture
Workaround
hack
Stage
deploy
Freshness
persistent
Scope
single_lib
Upstream
open
Recurring
No
Buyer Type
team
Maintainer
slow

Sources

Collection History

Query: “What are the most common pain points with Vercel for developers in 2025?”3/30/2026

The primary technical disadvantages highlighted in Vercel AI reviews are the strict execution timeouts (maximum 5 minutes), the 4.5MB request body limit, the inability to attach GPUs for custom model hosting, and the potential for complex scaling costs.

Created: 3/30/2026Updated: 3/30/2026