CallMissed Blog
Insights on AI communication, voice agents, WhatsApp automation, and the future of customer engagement.
LangGraph vs OpenAI Agents SDK: Which to Pick
The agent-framework landscape consolidated faster than most people expected. By mid-2026 two names dominate production stacks: LangGraph 1.x from the LangChain team and the OpenAI Agents SDK, released in March 2025 as a production-grade replacement for the experimental Swarm framework. They solve th…
Agent Evaluation Frameworks: Braintrust, Inspect, Langfuse, and DIY
The hardest question in agent engineering is not "how do I build it?" — frameworks have solved that. It is "is the new version better than the old one?" Without a credible answer, every prompt change is a vibe-check and every model bump is a coin flip. By 2026 the evaluation tooling has matured enou…
Autonomous Coding Agents in 2026: Claude Code, Codex, Vibe
Two years ago "autonomous coding agent" meant Devin's first demo and a wave of skepticism. By April 2026 the field has consolidated to a handful of production-grade options — Claude Code, Cursor, OpenAI Codex, Replit Agent 3, and Devin — each with a distinct opinion about how much autonomy is approp…
Structured Output vs Tool Use: Which When
By 2026 the "JSON parsing with regex" era is over. Both major model APIs offer constrained-decoding paths that produce schema-valid output, and tool use is mature enough that one or the other handles 90% of structured generation workloads. The remaining question is which to reach for — and the answe…