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v1.3.34 Breaking

This release includes 2 breaking changes for platform teams planning a safe upgrade.

Published 1mo AI Agents & Assistants
✓ No known CVEs patched
Read the diff → Tool health → What is this tool? →

✓ No known CVEs patched in this version

Topics

ai ai-agent ai-agents ai-tools cli-app

Summary

AI summary

Updates New models DeepSeek V4, Internals, and What's new across a mixed release.

Full changelog

What's new

New models

DeepSeek V4

  • deepseek-v4-pro (new default) — most capable DeepSeek, 1M context, thinking mode
  • deepseek-v4-flash — fast and affordable, 1M context
  • 384k max output tokens

OpenAI GPT-5 series

  • gpt-5.5 (new default) — latest GPT, best for coding
  • gpt-5.4, gpt-5.4-mini, gpt-5.4-nano

Fixes

  • GPT-5+ models now work correctly — temperature is omitted from requests because GPT-5+ only accepts the default value
  • Removed claude-mythos-preview (not a valid Anthropic model — returned 404)

Internals

  • Added requiresDefaultTemperature flag to provider config and applied it across chat, agentChat, and taskPlanner paths

Breaking Changes

  • Removed `claude-mythos-preview` model (invalid and returned 404).
  • `temperature` is now omitted from requests to GPT‑5+ models because they only accept the default value.
View diff on GitHub

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Related context

Earlier breaking changes

  • v2.4.1 MiniMax M3 replaces MiniMax-M2.7 as default model across all providers.
  • v2.0.0 McpServer protocol now optional fields `command`, `args`, plus new `url` and `headers`; version bumped to 2.0.0.

Beta — feedback welcome: [email protected]