# LlamaIndex v0.14.18

- Product: LlamaIndex (https://whatsnew.fyi/product/llamaindex)
- Vendor: LlamaIndex
- Date: 2026-03-16
- Version: v0.14.18
- Original notes: https://github.com/run-llama/llama_index/releases/tag/v0.14.18
- Permalink: https://whatsnew.fyi/product/llamaindex/releases/v0.14.18

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

---

- **added** — Align text match filters across core and vector backends
- **fixed** — Preserve chat history on incomplete stream consumption
- **fixed** — Guard against ZeroDivisionError in LlamaDebugHandler._get_time_stats_from_event_pairs
- **fixed** — Add stacklevel=2 to warnings.warn() for accurate caller reporting
- **deprecated** — Deprecate Python 3.9
- **fixed** — Use postprocess_nodes() in async retrieval paths
- **fixed** — Preserve response metadata in async _aretrieve_from_object
- **fixed** — Preserve non-ASCII schema descriptions in PydanticOutputParser
- **fixed** — structured_predict() returns default values for single-field models
- **fixed** — Fix OpenAI mimetype guess

#### Release Notes

##### [2026-03-16]

###### llama-index-agent-agentmesh [0.2.0]

- chore: deprecate python 3.9 once and for all ([#20956](https://github.com/run-llama/llama_index/pull/20956))

###### llama-index-agent-azure [0.3.0]

- chore: deprecate python 3.9 once and for all ([#20956](https://github.com/run-llama/llama_index/pull/20956))

###### llama-index-callbacks-agentops [0.5.0]

- chore: deprecate python 3.9 once and for all ([#20956](https://github.com/run-llama/llama_index/pull/20956))

###### llama-index-callbacks-argilla [0.5.0]

- chore: deprecate python 3.9 once and for all ([#20956](https://github.com/run-llama/llama_index/pull/20956))

###### llama-index-callbacks-arize-phoenix [0.7.0]

- chore: deprecate python 3.9 once and for all ([#20956](https://github.com/run-llama/llama_index/pull/20956))

###### llama-index-callbacks-honeyhive [0.5.0]

- chore: deprecate python 3.9 once and for all ([#20956](https://github.com/run-llama/llama_index/pull/20956))
- chore(deps): bump the uv group across 51 directories with 3 updates ([#20962](https://github.com/run-llama/llama_index/pull/20962))

###### llama-index-callbacks-langfuse [0.5.0]

- chore: deprecate python 3.9 once and for all ([#20956](https://github.com/run-llama/llama_index/pull/20956))

###### llama-index-callbacks-literalai [1.4.0]

- chore: deprecate python 3.9 once and for all ([#20956](https://github.com/run-llama/llama_index/pull/20956))

###### llama-index-callbacks-openinference [0.5.0]

- chore: deprecate python 3.9 once and for all ([#20956](https://github.com/run-llama/llama_index/pull/20956))

###### llama-index-callbacks-opik [1.3.0]

- chore: deprecate python 3.9 once and for all ([#20956](https://github.com/run-llama/llama_index/pull/20956))

###### llama-index-callbacks-promptlayer [0.5.0]

- chore: deprecate python 3.9 once and for all ([#20956](https://github.com/run-llama/llama_index/pull/20956))

###### llama-index-callbacks-uptrain [0.6.0]

- chore: deprecate python 3.9 once and for all ([#20956](https://github.com/run-llama/llama_index/pull/20956))

###### llama-index-callbacks-wandb [0.5.0]

- chore: deprecate python 3.9 once and for all ([#20956](https://github.com/run-llama/llama_index/pull/20956))

###### llama-index-core [0.14.18]

- feat: align text match filters across core and vector backends ([#20883](https://github.com/run-llama/llama_index/pull/20883))
- fix(chat_engine): preserve chat history on incomplete stream consumption ([#20897](https://github.com/run-llama/llama_index/pull/20897))
- fix: guard against ZeroDivisionError in LlamaDebugHandler.\_get_time_stats_from_event_pairs ([#20937](https://github.com/run-llama/llama_index/pull/20937))
- fix: add stacklevel=2 to warnings.warn() for accurate caller reporting ([#20939](https://github.com/run-llama/llama_index/pull/20939))
- chore: deprecate python 3.9 once and for all ([#20956](https://github.com/run-llama/llama_index/pull/20956))
- Release 0.14.17 ([#20957](https://github.com/run-llama/llama_index/pull/20957))
- chore(deps): bump the uv group across 51 directories with 3 updates ([#20962](https://github.com/run-llama/llama_index/pull/20962))
- fix: use `apostprocess_nodes()` in async retrieval paths ([#20974](https://github.com/run-llama/llama_index/pull/20974))
- fix (test) : use >= 1 to avoid racy `stream_chat` memory assertion ([#20980](https://github.com/run-llama/llama_index/pull/20980))
- fix(core): preserve response metadata in `async _aretrieve_from_object` ([#20995](https://github.com/run-llama/llama_index/pull/20995))
- fix: preserve non-ASCII schema descriptions in `PydanticOutputParser` ([#21016](https://github.com/run-llama/llama_index/pull/21016))
- chore(deps): bump the uv group across 42 directories with 2 updates ([#21020](https://github.com/run-llama/llama_index/pull/21020))
- fix(core): structured_predict() returns default values for single-field models ([#21025](https://github.com/run-llama/llama_index/pull/21025))
- fix openai mimetype guess (

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