v1.4.456

yarnpkg/yarnv1.4.456Jul 9, 2026by github-actions[bot]

AI Summary

This release focuses on adding Claude Sonnet 5 support and cleaning up the model listings by removing older Claude 4 aliases.

Key Highlights

Added Claude Sonnet 5 to supported Anthropic models
Removed older Claude 4 aliases from model listings
Centralized Anthropic sampling restrictions
Enabled one-million-token context beta for Claude 5 models

Breaking Changes

Removal of older Claude 4 aliases from model listings

New Features

Claude Sonnet 5 support
Sampling parameter updates
Refresh of Go dependencies across AI provider integrations

Full Release Notes

## Changes

### Direct commits

- Chore: cleanups - tidying the duplicate model listed
- Feat: add Claude Sonnet 5 Anthropic support

- Add Claude Sonnet 5 to supported Anthropic models
- Omit sampling parameters for Claude Sonnet 5 requests

- Centralize Anthropic sampling restrictions behind prefix matching
- Enable one-million-token context beta for Claude 5 models

- Remove older Claude 4 aliases from model listings
- Update Anthropic tests for Sonnet 5 beta mapping

- Refresh Go dependencies across AI provider integrations