Who tells you which model API your AI agent runs on — and what it costs monthly?
rcleffke · reddit · 2026-11-09
A consultant who helps SMBs adopt AI agents points out that demos rarely explain which hosted model API an agent actually calls and what that means for the monthly bill. His rankings site scores OpenAI API highest (8.45/10), followed by Anthropic Claude API (8.1), OpenAI Realtime voice API (8.0), and xAI Grok API (7.85) — all usage-priced, so cost scales with agent activity and text read per turn.
The underlying provider sets per-use cost, data terms for customer conversations, and switching rework. He asks owners whether they got realistic monthly cost estimates or spending caps, builders whether they design for provider swaps or accept lock-in, and whether outages or price changes ever hit production agents.
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