AgentClash

LLM agents

LLM agent evaluation beyond single-turn answers

LLM agents plan, call tools, inspect results, and recover from mistakes. AgentClash evaluates that full loop on your workloads so model swaps and prompt changes do not hide regressions.

live race
gate: pass

Candidate

92correct patch, low cost

Baseline

88stable reference run

Control

73missed edge case

replay timeline

1loaded task inputs and tool policy
2ran sandbox actions and captured artifacts
3scored trajectory and validator evidence
4attached scorecard and release verdict

ci verdict

Candidate clears release gate

Correctness improved, latency within budget, and required artifacts were preserved for review.

agentclash run create --follow

Evaluate the agent loop, not just the model

Built for reviewable agent decisions

LLM agent evaluation needs the same task, same tools, and preserved evidence — otherwise you are comparing demos, not systems.

Sandboxed real-tool execution

Head-to-head runs with fair constraints

Scorecards for correctness, cost, latency, and tool strategy

Replay trails for every important action

Challenge packs that turn failures into reusable tests

CI gates for baseline versus candidate decisions

Workflow

A practical LLM agent eval workflow

Package the task

Describe the workload as a challenge pack with inputs, tools, scoring rules, and artifacts.

Race the agents

Run every candidate against the same task with the same constraints.

Replay the evidence

Inspect tool calls, outputs, artifacts, latency, cost, and judge evidence after the run.

Gate the release

Compare candidate and baseline runs, then fail CI before a regression reaches users.

Bring your workload into AgentClash

Bring your first workload into the loop

Start with one real failure, encode it as a challenge pack, then scale to model comparisons and CI gates.

FAQ

LLM agent evaluation FAQ

What should LLM agent evaluation measure?

At minimum: task success, tool strategy, artifacts produced, cost, latency, and whether the agent stayed inside policy. AgentClash captures all of that in a scorecard.

Can we compare multiple LLM agents fairly?

Yes. AgentClash races candidates on the same challenge pack with the same tool policy, time budget, and sandbox resources.

Does AgentClash work with hosted model providers?

Yes. AgentClash routes to major LLM providers and normalizes tool-call shapes so evals stay comparable across models.