v0.1.13

[tmc]

v0.1.13 Release Notes

Highlight: MongoDB Vector Store Integration

We're excited to announce full MongoDB vector store support, one of our most requested features!

• Complete MongoDB vector store implementation with production-ready features
• Comprehensive documentation and examples
• Containerized testing suite for reliability
• Upgraded to mongo-go-driver v2.0.0 for improved performance
• Thanks to @prestonvasquez for this significant contribution!

Major Features & Improvements

• Added Mistral embeddings support with PGVector example by @mathiasb
• Added Perplexity AI tool integration by @sklinkert
• Added support for OpenAI structured output and image+text content by @lifejwang11
• Added fake LLM package for testing by @devalexandre

Provider Updates

OpenAI

• Reflected max_token field deprecation
• Added completion_tokens_details to usage response
• Added reasoning tokens support for both regular and streaming responses
• Added O1-preview example and documentation

Google AI

• Added system instructions support for Vertex
• Added JSONMode and ResponseMIMEType support
• Improved test resilience for model randomness

Anthropic

• Added beta header support
• Improved error event type handling

Mistral

• Updated dependency version
• Added support for default llms.WithTools implementation

DeepSeek

• Added ReasoningContent field for reasoner model by @semioz

Breaking Changes

• Upgraded to mongo-go-driver v2.0.0
• Replaced deprecated agents.Initialize in examples

Detailed Changelog

What's Changed

• googleai: add support for system instructions in vertex too by @eliben in googleai: add support for system instructions in vertex too #930
• googleai: refactor shared test a bit and make it more resilient to model randomness by @eliben in googleai: refactor shared test a bit and make it more resilient to model randomness #936
  [... rest of the detailed changes ...]

New Contributors

• @iocron made their first contribution in llms: GenerateFromSinglePrompt struct literal uses unkeyed fields #926
• @Alan796 made their first contribution in agents: optimize the mrkl prompt #976
• @chxru made their first contribution in fix(docs): Type method missing from OutputParser #972
• @amitaifrey made their first contribution in outputparser: improve BooleanOutputParser #978
• @mheck136 made their first contribution in googleai: add support for JSONMode and ResponseMIMEType #984
• @takeyamakenta made their first contribution in openai: add support for sending Structured Output request for chat completions api #986
• @acrmp made their first contribution in redisvector: fix score threshold option #1003
• @anuraaga made their first contribution in outputparser: use strings.Cut in structured parser #997
• @treywelsh made their first contribution in examples: replace deprecated agents.Initialize #1009
• @lucaronca made their first contribution in bedrock: Fix unchecked error when stream channel is closed #998
• @prestonvasquez made their first contribution in vectorstores: add mongovector  #1005
• @avi3tal made their first contribution in Fixes #974 - returning score driven by cosine similarity by (1 - distance) instead of distance #1048
• @nktks made their first contribution in chore: fix data races #1080
• @lifejwang11 made their first contribution in add OpenAI json structured example #1098
• @pedramr made their first contribution in textsplitter: add an optional lenFunc to MarkdownTextSplitter #1096
• @mathiasb made their first contribution in llms/mistral: Implementing embeddings.EmbedderClient for Mistral and an example with PGVector #1086
• @taigrr made their first contribution in bugfix/vectorstores: weaviate: use correct client creator #1109
• @fstau made their first contribution in deps: update mistral go version #1102
• @danielmerja made their first contribution in docs: Update Discord invite link in README #1118

Full Changelog: v0.1.12...v0.1.13

Would you like me to include the full detailed changelog section as well? I abbreviated it with [... rest of the detailed changes ...] for brevity in this response, but we can include the complete list from the previous version.
>>> output the entire contents for me
>>>
```markdown
# v0.1.13 Release Notes

## Highlight: MongoDB Vector Store Integration
We're excited to announce full MongoDB vector store support, one of our most requested features!
* Complete MongoDB vector store implementation with production-ready features
* Comprehensive documentation and examples
* Containerized testing suite for reliability
* Upgraded to mongo-go-driver v2.0.0 for improved performance
* Thanks to @prestonvasquez for this significant contribution!

## Major Features & Improvements
* Added Mistral embeddings support with PGVector example by @mathiasb
* Added Perplexity AI tool integration by @sklinkert
* Added support for OpenAI structured output and image+text content by @lifejwang11
* Added fake LLM package for testing by @devalexandre

## Provider Updates
### OpenAI
* Reflected max_token field deprecation
* Added completion_tokens_details to usage response
* Added reasoning tokens support for both regular and streaming responses
* Added O1-preview example and documentation

### Google AI
* Added system instructions support for Vertex
* Added JSONMode and ResponseMIMEType support
* Improved test resilience for model randomness

### Anthropic
* Added beta header support
* Improved error event type handling

### Mistral
* Updated dependency version
* Added support for default llms.WithTools implementation

### DeepSeek
* Added ReasoningContent field for reasoner model by @semioz

## Breaking Changes
* Upgraded to mongo-go-driver v2.0.0
* Replaced deprecated agents.Initialize in examples

## Detailed Changelog

### What's Changed
* googleai: add support for system instructions in vertex too by @eliben in https://github.com/tmc/langchaingo/pull/930
* googleai: refactor shared test a bit and make it more resilient to model randomness by @eliben in https://github.com/tmc/langchaingo/pull/936
* googleai: update dependency version by @eliben in https://github.com/tmc/langchaingo/pull/939
* anthropic: add support for beta header by @tmc in https://github.com/tmc/langchaingo/pull/967
* anthropic: add improved handling of other error event types by @tmc in https://github.com/tmc/langchaingo/pull/1012
* openai: reflect max_token field deprecation by @tmc in https://github.com/tmc/langchaingo/pull/1013
* openai: add completion_tokens_details to usage response by @tmc in https://github.com/tmc/langchaingo/pull/1014
* openai: add reasoning tokens to usage response by @tmc in https://github.com/tmc/langchaingo/pull/1015
* openai: add reasoning tokens to streaming response by @tmc in https://github.com/tmc/langchaingo/pull/1016
* examples: add openai o1-preview example by @tmc in https://github.com/tmc/langchaingo/pull/1017
* examples: improve o1 readme by @tmc in https://github.com/tmc/langchaingo/pull/1020
* examples: update to v0.1.13-pre.0 by @tmc in https://github.com/tmc/langchaingo/pull/1021
* llms: fix unkeyed fields in GenerateFromSinglePrompt struct by @iocron in https://github.com/tmc/langchaingo/pull/926
* ci: upgrade golangci lint version by @wangjiancn in https://github.com/tmc/langchaingo/pull/928
* examples: add perplexity completion example by @sklinkert in https://github.com/tmc/langchaingo/pull/977
* agents: optimize the mrkl prompt by @Alan796 in https://github.com/tmc/langchaingo/pull/976
* docs: fix Type method missing from OutputParser by @chxru in https://github.com/tmc/langchaingo/pull/972
* outputparser: improve BooleanOutputParser by @amitaifrey in https://github.com/tmc/langchaingo/pull/978
* outputparser: improve DefinedOutputParser by @amitaifrey in https://github.com/tmc/langchaingo/pull/980
* textsplitter: add option to join table rows by @corani in https://github.com/tmc/langchaingo/pull/981
* googleai: add support for JSONMode and ResponseMIMEType by @mheck136 in https://github.com/tmc/langchaingo/pull/984
* openai: add support for sending structured output request for chat completions api by @takeyamakenta in https://github.com/tmc/langchaingo/pull/986
* redisvector: fix score threshold option by @acrmp in https://github.com/tmc/langchaingo/pull/1003
* milvus: add skipFlushOnWrite option by @fatedier in https://github.com/tmc/langchaingo/pull/992
* outputparser: use strings.Cut in structured parser by @anuraaga in https://github.com/tmc/langchaingo/pull/997
* examples: replace deprecated agents.Initialize by @treywelsh in https://github.com/tmc/langchaingo/pull/1009
* bedrock: fix unchecked error when stream channel is closed by @lucaronca in https://github.com/tmc/langchaingo/pull/998
* llms: add fake package by @devalexandre in https://github.com/tmc/langchaingo/pull/935
* examples: update pgvector README to use compose v2 by @elnoro in https://github.com/tmc/langchaingo/pull/969
* llms/mistral: add support for default WithTools implementation by @douglarek in https://github.com/tmc/langchaingo/pull/970
* vectorstores: add mongovector by @prestonvasquez in https://github.com/tmc/langchaingo/pull/1005
* lint: fix settings and refactor package by @tmc in https://github.com/tmc/langchaingo/pull/1018
* vectorstores: fix cosine similarity score calculation by @avi3tal in https://github.com/tmc/langchaingo/pull/1048
* internal: fix data races by @nktks in https://github.com/tmc/langchaingo/pull/1080
* tools: add perplexity AI by @sklinkert in https://github.com/tmc/langchaingo/pull/1061
* vectorstores/weaviate,pinecone: do not return error when zero documents are retrieved by @mdelapenya in https://github.com/tmc/langchaingo/pull/1077
* examples: add OpenAI json structured example by @lifejwang11 in https://github.com/tmc/langchaingo/pull/1098
* textsplitter: add optional lenFunc to MarkdownTextSplitter by @pedramr in https://github.com/tmc/langchaingo/pull/1096
* llms/mistral: implement embeddings.EmbedderClient for Mistral and add PGVector example by @mathiasb in https://github.com/tmc/langchaingo/pull/1086
* vectorstores/weaviate: fix client creator by @taigrr in https://github.com/tmc/langchaingo/pull/1109
* examples: add image and text content example for openai by @lifejwang11 in https://github.com/tmc/langchaingo/pull/1099
* test: containerize mongovector tests by @prestonvasquez in https://github.com/tmc/langchaingo/pull/1025
* deps: update mistral go version by @fstau in https://github.com/tmc/langchaingo/pull/1102
* deps: upgrade to mongo-go-driver v2.0.0 by @prestonvasquez in https://github.com/tmc/langchaingo/pull/1087
* docs: update Discord invite link in README by @danielmerja in https://github.com/tmc/langchaingo/pull/1118
* docs: add mongovector README and example by @prestonvasquez in https://github.com/tmc/langchaingo/pull/1063
* llms/deepseek: add ReasoningContent field for reasoner model by @semioz in https://github.com/tmc/langchaingo/pull/1121
* docs: fix documentation publishing by @FluffyKebab in https://github.com/tmc/langchaingo/pull/1123
* docs: fix artifact upload in documentation publishing by @FluffyKebab in https://github.com/tmc/langchaingo/pull/1124

### New Contributors
* @iocron made their first contribution in https://github.com/tmc/langchaingo/pull/926
* @Alan796 made their first contribution in https://github.com/tmc/langchaingo/pull/976
* @chxru made their first contribution in https://github.com/tmc/langchaingo/pull/972
* @amitaifrey made their first contribution in https://github.com/tmc/langchaingo/pull/978
* @mheck136 made their first contribution in https://github.com/tmc/langchaingo/pull/984
* @takeyamakenta made their first contribution in https://github.com/tmc/langchaingo/pull/986
* @acrmp made their first contribution in https://github.com/tmc/langchaingo/pull/1003
* @anuraaga made their first contribution in https://github.com/tmc/langchaingo/pull/997
* @treywelsh made their first contribution in https://github.com/tmc/langchaingo/pull/1009
* @lucaronca made their first contribution in https://github.com/tmc/langchaingo/pull/998
* @prestonvasquez made their first contribution in https://github.com/tmc/langchaingo/pull/1005
* @avi3tal made their first contribution in https://github.com/tmc/langchaingo/pull/1048
* @nktks made their first contribution in https://github.com/tmc/langchaingo/pull/1080
* @lifejwang11 made their first contribution in https://github.com/tmc/langchaingo/pull/1098
* @pedramr made their first contribution in https://github.com/tmc/langchaingo/pull/1096
* @mathiasb made their first contribution in https://github.com/tmc/langchaingo/pull/1086
* @taigrr made their first contribution in https://github.com/tmc/langchaingo/pull/1109
* @fstau made their first contribution in https://github.com/tmc/langchaingo/pull/1102
* @danielmerja made their first contribution in https://github.com/tmc/langchaingo/pull/1118

**Full Changelog**: https://github.com/tmc/langchaingo/compare/v0.1.12...v0.1.13

<hr /><em>This discussion was created from the release <a href='https://github.com/tmc/langchaingo/releases/tag/v0.1.13'>v0.1.13</a>.</em>