Migrating to LlamaIndex v0.12.40
Version v0.12.40 introduces 1 breaking change. This guide details how to update your code.
Released: 6/3/2025
1
Breaking Changes
1
Migration Steps
7
Affected Symbols
⚠️ Check Your Code
If you use any of these symbols, you need to read this guide:
StopEventOpenAIResponsesBasicMCPClientAnthropicBedrockCohereEmbeddingGoogleGenAIMeasureSpaceToolSpecBreaking Changes
●Issue #1
The 'reasoning_effort' keyword argument in OpenAIResponses has been moved into the 'reasoning_options' dictionary. Update code passing 'reasoning_effort' directly to use the new dictionary structure.
Migration Steps
- 1Update OpenAI integration code to wrap 'reasoning_effort' inside a 'reasoning_options' dictionary.
Release Summary
This release introduces workflow validation for StopEvents, adds Measure Space tools, and provides several bug fixes for OpenAI, Anthropic, and Google GenAI integrations.
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View the full release notes and all changes for LlamaIndex v0.12.40.
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