Limits
OverviewLink to section
This page lists the current limits that apply across Mixedbread Stores and files. Unless noted otherwise, the values below reflect the default paid experience.
None of these limits are hard walls. If you're bumping into one, or expect to, contact us — we routinely raise limits for teams with real workloads, and we'd rather hear from you early than have you design around a number on this page.
Current LimitsLink to section
StoresLink to section
| Metric | Current Limit |
|---|---|
| Max stores per organization | Unlimited* |
| Max store name length | 60 characters |
| Max store description length | 256 characters |
FilesLink to section
| Metric | Current Limit |
|---|---|
| Max files per store | Unlimited* |
| Max store file external ID length | 256 characters |
SearchLink to section
| Metric | Current Limit |
|---|---|
| Max stores per search | 16 |
| Max agentic search instructions length | 2,000 characters |
| Max question answering instructions length | 2,000 characters |
MetadataLink to section
| Metric | Current Limit |
|---|---|
| Max metadata keys | 256 † |
| Max metadata key size | 128 bytes † |
| Max metadata value size | 8 KiB ‡ |
| Max total metadata size | 128 KiB |
| Max metadata nesting depth | 5 |
* Free/basic organizations may have lower plan-specific limits.
† Counted against flattened leaf keys when metadata is nested. For example,
{ "a": { "b": 1, "c": 2 } } counts as two keys (a.b, a.c), and the key
size limit applies to the full flattened path.
‡ Applies to leaf values (strings, numbers, booleans, arrays, etc.). Objects are not leaves — their contents are.