You can't set a sane spend limit without knowing what the underlying APIs cost. These pages pin down current per-token and per-seat pricing for the providers and tools agents most commonly spend against, with worked examples for sizing per-transaction caps and daily ceilings.
How much does Anthropic Claude API cost? Claude API pricing by model and usage tier, with notes on effective agent costs.
How much does LangSmith cost? LangSmith pricing ranges from a free developer tier to enterprise plans for teams.
How much does OpenAI API cost? OpenAI API pricing varies by model and usage — understanding the cost structure is critical for budgeting AI agents.