Anthropic raises Claude API max request size 4x, from 32MB to 128MB
minchoi · x · 2026-10-31
Anthropic (via @ClaudeDevs) has raised the max request size for Messages and Token Counting on the Claude API from 32MB to 128MB (4x). Image-heavy requests like long computer-use sessions and large PDFs were previously hitting the 32MB cap with plenty of context window left; the change targets exactly that bottleneck, enabling bigger PDFs, more screenshots, and longer agent workflows.
Related event: Anthropic Quadruples Claude API Request Limit to 128MB(5 posts)→
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