Zespan - 2026 Pricing, Features, Reviews & Alternatives

Zespan is a cloud-based AI agent reliability platform built for software engineering teams developing and operating production AI agents. It delivers complete observability into every agent run, capturing every LLM call, tool invocation, memory lookup, and multi-agent handoff automatically, with no manual instrumentation, no sampling, and zero added latency. A span waterfall view timestamps and prices each step, while a searchable trace explorer allows filtering by status, model, agent, tool, environment, and time. Setup requires two lines of code and under five minutes, with no changes to existing agent logic. A free tier provides 10,000 traces per month with no credit card required; Team, Growth, and Enterprise plans extend capacity and governance controls.

Beyond tracing, Zespan provides a full evaluation and prompt management layer. Prompt versioning supports A/B testing with live cost and error rate tracked per version, and one-click rollback requires no code changes. A dataset builder promotes real production traces into regression sets, and an eval replay environment lets teams test agent scenarios against new prompts or models before shipping. Automated trace scoring via LLM-as-judge and rule-based evaluators surfaces quality regressions before users encounter them, with pass rate trending over time. Cost attribution operates at the span level, making optimization decisions actionable rather than approximate.

Zespan includes ZespanPilot, an AI assistant that answers natural-language queries over production data, runs root cause analysis, and executes multi-step remediation playbooks with audit logging, dry-run previews, and one-tap undo. A hosted MCP server is compatible with Claude Desktop, Cursor, and any MCP client. The platform ingests telemetry via a standard OTLP/HTTP endpoint, requiring no proprietary format. Alerts, guardrails, budget controls, and live SDK configuration are each gated by role and risk tier. Team and Enterprise plans include SSO, RBAC, audit logs, and GDPR compliance.