Tool Use Reliability in Claude Sonnet 4.6: What Improved
A practical engineering deep dive into Claude Sonnet 4.6 tool use, covering architecture, tradeoffs, and what production teams need to know about function calling reliability.
Browse older CallSphere articles on AI voice agents, contact center automation, and conversational AI.
From the blog
A practical engineering deep dive into Claude Sonnet 4.6 tool use, covering architecture, tradeoffs, and what production teams need to know about function calling reliability.
Ollama matured significantly through 2025-26 and added serious features. The honest take on whether it belongs in production for agent workloads, and where the limits sit.
Sales agents that remember every touch close more deals. The account-graph + activity-history memory pattern for B2B sales agents that handle complex multi-stakeholder deals.
How to wire Vercel AI SDK 5 tool calls to a React UI with streaming, partial UI updates, and proper error handling that survives flaky network conditions.
How a Seattle SaaS team used the Vercel AI SDK 5 agent loop to build an in-product onboarding agent that converts trial users at measurably higher rates.
SMB Founder Playbook perspective on Stagehand 2.0 stabilized the browser-agent SDK that everyone is quietly building on top of.
Enterprise CIO Guide perspective on ElevenLabs Conversational 2.0 ships native MCP tool use, sub-second turn-taking, and a redesigned dashboard that makes voice agents feel like real software.
Enterprise CIO Guide perspective on The first wave of EU AI Act enforcement landed in 2026 — here is the practical impact on agent deployments.
Enterprise CIO Guide perspective on Model Context Protocol 1.0 stabilized in April 2026 and every major agent host now ships an MCP client out of the box.
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