LangChain launches Deep Agents and updates LangGraph to version 1.2.4
LangChain launched Deep Agents in March, a higher-level framework built on LangGraph, while LangGraph itself reached version 1.2.4 on June 2.
LangGraph keeps evolving
After reaching version 1.0 — a milestone that introduced durable state, letting agents resume exactly where they left off after a server crash — LangGraph reached version 1.2.4 on June 2, 2026, with incremental fixes on top of the 1.0 baseline.
Deep Agents
LangChain launched Deep Agents in March 2026, a higher-level framework built on top of LangGraph that ships out of the box with planning, subagent management, and file-system access — cutting down the amount of code needed to build a long-running agent.
Human-in-the-loop
One of the core features of LangGraph 1.0 carried into 1.2.4 is first-class support for human-in-the-loop flows, which let developers pause an agent's execution for human review, adjustment, or approval before it continues — a topic covered in a tutorial in this edition.
Also in Releases & Models
SpaceXAI announces Grok 4.5, an "Opus-class" model cheaper than rivals
On July 8, 2026, SpaceXAI (formerly xAI) announced Grok 4.5, a model the company describes as comparable in class to Claude Opus 4.7, with public availability expected on July 9. The model costs $2 per million input tokens and $6 per million output tokens, undercutting rival pricing.
Anthropic launches Claude Sonnet 5, its most agentic Sonnet model yet
Anthropic launched Claude Sonnet 5 on June 30, 2026, now the default model on the Free and Pro plans, with a 1 million token context window and promotional pricing through August.
OpenAI previews GPT-5.6 with restricted access
OpenAI announced a limited preview of the GPT-5.6 family (Sol, Terra and Luna) on June 26, currently available to only about 20 companies approved by the US government.