Decagon Raises Series C at $1.5B Valuation
Decagon raised a Series C at a $1.5B valuation led by Bain Capital Ventures. What it signals for customer-service AI agents moving into the enterprise.
6 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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Mistral Series C — April 2026 round and the European AI champion bet
Mistral closed a Series C at a reported $14B valuation in April 2026 with strong sovereign-fund participation, positioning it as Europe's flagship foundation model lab.
6 min read
Sierra (Bret Taylor) Series C — what closed in April 2026
Sierra raised a Series C at a reported $4.5B valuation on April 21, 2026, led by Greenoaks with Sequoia and Benchmark following — a 3x markup in eight months.
6 min read
Legal Intake Voice AI for Family Law Firms in Florida 2026
Florida family law firms deployed legal intake voice AI in April 2026 for divorce, custody, and adoption matters. Trauma-informed scripting, compliance, and conversion lift.
9 min read
Plaid + AI Agents 2026: Financial Data Pipes for Agent Stacks
Plaid's AI-agent endpoints shipped in 2026, letting agents access bank, investment, and lending data with user consent. Here's the playbook, the developer pricing.
10 min read
TR CoCounsel 2026: Casetext Acquisition Three Years In
TR's CoCounsel platform now serves 4,000+ firms in 2026 after the Casetext deal. We profile the platform, the pricing tiers, the integration with Westlaw.
8 min read
NHS AI Agent Pilots London 2026: Public Sector Healthcare Push
The UK NHS scaled AI agent pilots across London trusts in 2026. Here's the deployments, the procurement model under the AI Buying Catalogue, the outcomes.
11 min read
uRackIT MSP AI Voice Agents 2026: CallSphere IT Support Pattern
uRackIT's MSP-focused AI voice agents (CallSphere) handle helpdesk, ticket triage, and after-hours coverage in 2026. Here's the playbook, the per-minute pricing.
10 min read
Grounding Chat Agents in 2026: Span-Level Verification, Agentic RAG, and Why Hallucinations Drop
The 2026 chat-agent stack uses span-level verification, agentic RAG, and uncertainty-aware evals to cut hallucination rates by an order of magnitude.
11 min read
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