Letta (formerly MemGPT) in 2026: The OS for Stateful Agent Memory
Letta treats the LLM like an OS that manages its own RAM, recall, and archival memory. Here is when this paradigm beats simple vector stores.
12 min read
Archive page 669 of 1224
AI Voice Agent Insights & Guides
Browse older CallSphere articles on AI voice agents, contact center automation, and conversational AI.
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Conversational Analytics in 2026: 100% of Conversations, Real-Time Sentiment
Modern conversational analytics tools analyze 100% of customer interactions vs the 1-2% manual QA reviews. Here is what to instrument.
10 min read
Pre-Built Verticals (6) vs Empty Canvas: CallSphere vs Vapi
CallSphere ships 6 production verticals with multi-agent counts and tool inventories. Vapi ships a blank assistants config. Tour the catalog.
14 min read
Drift Detection for AI Infra: Atlantis + driftctl + Daily Plan (2026)
Catch out-of-band changes to AI voice infrastructure with Atlantis-driven Terraform PRs, driftctl coverage scans, and a daily \`terraform plan -detailed-exitcode\` cron.
11 min read
Evaluation Suite for Claude Opus 4.7: Beyond MMLU and SWE-bench
A practical engineering deep dive into Claude Opus 4.7 evaluation, covering architecture, tradeoffs, and what production teams need to know about LLM benchmarks.
6 min read
Why Vapi Enterprise Customers Burn $40K-$70K/Year
Vapi's enterprise deployments typically cost $40K-$70K/year. Here is exactly where the money goes — and how CallSphere caps it.
13 min read
Operator 2.0 vs Perplexity Comet: Browser AI Showdown for 2026
Comparing ChatGPT Operator 2.0 and Perplexity Comet for browser-based AI workflows — features, accuracy, pricing, and which fits your team in 2026.
8 min read
EU AI Act enforcement begins — what April 2026 means for AI vendors
The EU AI Act's general-purpose AI obligations entered into force on August 2, 2025, but April 2026 is when national regulators began publishing enforcement guidance with teeth.
6 min read
Real Estate and Property Management Lens: Claude Code 2.1 — Multi-Agent Coding for Real
Real Estate and Property Management Lens perspective on Claude Code 2.1 ships background agents, sub-agent spawning, and a hooks API that turn it into a true multi-agent coding platform.
9 min read
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