Browse older CallSphere articles on AI voice agents, contact center automation, and conversational AI.
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SMB Founder Playbook perspective on Haiku 4.5 closes the gap with Sonnet on tool calling while staying cheap and fast — the right pick for high-throughput voice and chat agents.
STIR/SHAKEN, branded calling, opt-in lists, carrier reputation. How CallSphere builds outbound trust vs Vapi defaults. Real-world spam-flag remediation.
The evolution of attention from the original transformer to 2026's multi-query and grouped-query variants — what changed and why it matters.
AIBOM is the SBOM equivalent for AI systems. The competing 2026 standards (CycloneDX-AI, SPDX-AI), what they capture, and which is winning.
Lightning vs raw PyTorch for production AI in 2026 — productivity, performance, and the trade-offs that matter at scale.
When and how to fine-tune embeddings for your domain. The 2026 patterns, the cost-quality tradeoffs, and the open-source tooling.
Twelve recurring RAG failure modes from production deployments and the fixes for each in 2026.
How leaders should think about Claude Code 2.1 San Francisco — adoption patterns, ROI, competitive dynamics, and what developer productivity means for the next 12 months.
Duolingo Max's AI agents (Roleplay, Explain My Answer, Video Call) drive 30%+ of revenue in 2026. Here's the product breakdown, the tier pricing.
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