Maxim AI

Maxim AI is an end to end platform for simulating, evaluating, and observing AI agents across the entire development lifecycle, from prompt engineering through pre release testing to production monitoring. Operated by H3 Labs, it is built around cross functional use, so engineers work through SDKs while product managers and QA teams can define, run, and analyze simulations and evaluations directly in the UI without code. The stack spans a model gateway, observability, and evaluations, and is used by companies including EY, ByteDance, Klaviyo, and McAfee, which report shipping reliable agents several times faster.

Its standout capability is agent simulation. Teams generate diverse synthetic personas with specific goals, knowledge levels, and communication styles, then run agents across thousands of real world scenarios and multi turn conversations before any live traffic, re running from any step to reproduce and root cause failures. On top of simulations, Maxim evaluates at the session, trace, and span level through what it calls Flexi Evals, combining a store of prebuilt and third party evaluators with custom AI judge, programmatic, statistical, and human evaluators. It supports both offline evaluation on curated datasets and online evaluation of live traffic, and wires into CI pipelines like GitHub Actions, Jenkins, and CircleCI to gate quality on every change.

For production, Maxim's observability suite captures full multi turn Sessions, grouping every trace across turns into a complete trajectory with tool call inspection, latency analysis, and quality scores. It tracks token usage, cost, and latency, fires real time alerts to Slack or PagerDuty on custom thresholds, and is OpenTelemetry native, able to ingest traces and forward data to platforms like New Relic and Snowflake. Maxim also includes Bifrost, an LLM gateway that provides unified routing and governance across more than a thousand models from over eight providers, giving teams a single oversight layer for model traffic.

Maxim is built for enterprise use, with role based access controls, in VPC deployment, governance, and ISO 27001, SOC 2, HIPAA, and GDPR compliance. Its SDKs cover Python, TypeScript, Java, and Go. Pricing starts with a free Developer tier that includes 10,000 logs a month with three day retention, a Professional plan at $29 per seat a month that adds online evaluations, 100,000 logs, and seven day retention, a Business plan at $49 per seat a month, and a custom Enterprise tier. All plans include a fourteen day free trial with no card required.