Four times as much data per request

Anthropic on Oct. 29 (Oct. 30 Japan time) raised the limit on the amount of data that can be sent in a single request to its developer-facing Claude API from 32MB to 128MB. The company announced the change on X through its developer account, @ClaudeDevs.

The change covers the endpoint for sending messages and the endpoint for counting tokens. It also suits long tasks by agents that operate screens, image-heavy PDFs and processing that feeds in many images at once. The per-image limit when sending 21 or more images was also expanded from 2,000 pixels to 3,000 pixels.

Pricing and the context window are unchanged. No SDK update or setting to enable a beta feature is required.

Cloud routes unchanged

Only Anthropic's direct API received the increase. The limits when using Claude through cloud services are unchanged.

Claude's per-request limits by route
RouteLimit per request
Anthropic API128MB
Microsoft Foundry, Anthropic's AWS and Google Cloud versions32MB
Google Cloud version operated by Google30MB
Amazon Bedrock20MB