End-to-end infrastructure for training and inferencing open weight models

Onboard with your coding agent #

The fastest way to get started is to let your coding agent set AC2 up for you. Paste this prompt into Claude Code, Cursor, Codex, or any coding agent:

Quickstart.

Packages #

• ac2.sdk — platform client for datasets, workloads, sessions, traces, and secrets.
• ac2.runtime — agent framework for agents, environments, orchestrators, tasks, graders, and episodes.
• ac2.tracing — OpenTelemetry-based observability SDK. Add@traced to any function to capture timing, inputs, outputs, and nested spans. Exports to ClickHouse and Langfuse.

Quickstart #

Install the SDK and train a model.

Runtime #

Define agents, environments, orchestrators, and eval tasks.

SDK #

Manage datasets, deployments, runs, traces, and secrets from Python.

MCP server #

Analyze eval and train traces from your editor.

Choose a workflow #

Evaluate an agent #

Run evals, grade traces, and compare behavior.

Train a model #

Choose GRPO, supervised fine-tuning, or on-policy self-distillation.

Route inference #

Deploy a model and route traffic through Policies and Endpoints.

FAQ #

Find answers for failed runs, datasets, package installation, and cleanup.