# Anthropic Message Batches API

**Canonical:** https://apis.io/apis/anthropic/anthropic-message-batches-api/  
**Provider:** Anthropic — https://apis.io/providers/anthropic/  
**Documentation:** https://docs.anthropic.com/en/api/creating-message-batches

Anthropic Message Batches API is one of 24 APIs that [Anthropic](https://apis.io/providers/anthropic/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Artificial Intelligence, Batches, and Message. The published artifact set on APIs.io includes API documentation and an OpenAPI specification.

Send a batch of Message creation requests at 50% off both input and output tokens. Batches can take up to 24 hours to complete. Supports up to 300k output tokens per request on Opus 4.6/4.7 and Sonnet 4.6 with the output-300k-2026-03-24 beta header.

## Machine-readable artifacts (2)

- **Documentation** — https://docs.anthropic.com/en/api/creating-message-batches
- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/anthropic/refs/heads/main/openapi/anthropic-message-batches-api-openapi.yml

## Other Anthropic APIs (12)

- [Anthropic Messages API](https://apis.io/apis/anthropic/anthropic-messages-api/)
- [Anthropic Models API](https://apis.io/apis/anthropic/anthropic-models-api/)
- [Anthropic Files API](https://apis.io/apis/anthropic/anthropic-files-api/)
- [Anthropic Token Counting API](https://apis.io/apis/anthropic/anthropic-token-counting-api/)
- [Anthropic Skills API](https://apis.io/apis/anthropic/anthropic-skills-api/)
- [Anthropic Claude Code Analytics API](https://apis.io/apis/anthropic/anthropic-claude-code-analytics-api/)
- [Anthropic Agents API](https://apis.io/apis/anthropic/anthropic-agents-api/)
- [Anthropic Api Keys API](https://apis.io/apis/anthropic/anthropic-api-keys-api/)
- [Anthropic Cost API](https://apis.io/apis/anthropic/anthropic-cost-api/)
- [Anthropic Environments API](https://apis.io/apis/anthropic/anthropic-environments-api/)
- [Anthropic Events API](https://apis.io/apis/anthropic/anthropic-events-api/)
- [Anthropic Organization API](https://apis.io/apis/anthropic/anthropic-organization-api/)

## Tags

Artificial Intelligence, Batches, Message

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/anthropic/anthropic-message-batches-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/anthropic/.