MXFP4 Quantization Explained: The Microscaling Format Behind 2026 Inference
MXFP4 is the quantization format powering 2026 inference on NVIDIA Blackwell, AMD MI355X, and Intel Gaudi 3. What it does, why it works, and what it costs.
9 min read
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AI Voice Agent Insights & Guides
Browse older CallSphere articles on AI voice agents, contact center automation, and conversational AI.
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Cost-Aware Agent Orchestration: Routing Cheap and Expensive LLM Calls in 2026
Frontier-model bills wreck agent unit economics. The 2026 routing patterns that cut cost 60-80% with no measurable quality loss.
8 min read
Stop Sending Your Whole Repo To Claude — Build A Knowledge Graph Instead
The "just paste the whole repo into the context window" era was a phase. Code-Review-Graph proves graphs of code intelligence outperform brute-force context dumps.
10 min read
SMB Founder Playbook: Devin 4 — The Autonomous Engineer Grows Up
SMB Founder Playbook perspective on Devin 4 ships with longer task horizons, better PR quality, and pricing that finally makes economic sense for production teams.
9 min read
Best Calling Platforms for Financial Services in 2026
Compare the top calling platforms for financial services in 2026, covering compliance, AI features, archival, and cost across leading providers.
14 min read
Tool-Use Benchmarks 2026: BFCL V3, Tau-Bench, and the State of Function Calling
The hardest function-calling benchmarks of 2026 and what the leaderboard tells us about which models actually work as agents.
8 min read
Context Length Wars 2026: 10M Tokens, Cost Curves, and the Needle-in-Haystack Reality
Context length kept doubling. By 2026, 10M-token windows are real but expensive and not always useful. The honest picture.
8 min read
SMB Founder Playbook: tau-bench 2026 — The Tool-Use Leaderboard
SMB Founder Playbook perspective on tau-bench measures multi-turn tool use against simulated users — the right benchmark for production agent decisions.
9 min read
SMB Founder Playbook: Deepgram Aura 2 — TTS Optimized for Voice Agents
SMB Founder Playbook perspective on Aura 2 is Deepgram's TTS engine tuned for the latency and prosody constraints of real-time voice agents.
9 min read
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