# Chunk text with overlap

Build-time release reference. Runtime readiness, deployment, payment settlement and external indexing are not evaluated here. Prices are proposed; this file cannot authorize execution or payment.

Use to split a document into bounded Unicode-code-point windows with configurable overlap. Exact source slices use UTF-16 offsets, so adjacent windows can be verified without losing source characters. Not tokenization or grapheme segmentation. At most 2,000 chunks and 500,000 returned UTF-16 units.

Release: 0.29.0. Built: 2026-10-06T15:38:00Z.

## Choose for
- Create bounded code-point windows with verifiable UTF-16 source offsets.

## Outside this profile
- Tokenizer-accurate token budgets or semantic passage segmentation.

Proposed nominal USD 0.005 per successful call; payer fees excluded. No verified runtime availability.

- [Exact release contract](/reference/services/text-chunk.json)
- [Input schema](/reference/schemas/text-chunk.input.json)
- [Output schema](/reference/schemas/text-chunk.output.json)
- [Fixed example](/reference/examples/text-chunk.json)
- [Complete HTML reference](/discover/tools/text-chunk)