Google Cloud Agent Evaluation
Google Cloud Agent Evaluation helps measure and improve AI agents’ performance, safety, and quality.
What Google Cloud Agent Evaluation is
Google Cloud Agent Evaluation helps measure and improve AI agents’ performance, safety, and quality. Its workflow defines evaluation cases, runs inferences, records behavior traces, calculates metrics, analyzes results, and uses those findings to optimize the agent. It can generate multi-turn synthetic scenarios from agent instructions and tool definitions, and simulate tool calls with custom behavior, mocked data, or errors such as HTTP 503 responses and latency spikes. Prebuilt or custom raters can score traces with reference-based Exact Match or reference-free Helpfulness metrics. Evaluations can also use production traffic or external logs without a managed test environment. Prompt optimization identifies failure points and proposes targeted system-instruction updates. Google provides notebook launch options for Colab, Colab Enterprise, Agent Platform Workbench, and GitHub, and evaluation skills for AI coding assistants. The service is available on the web and through an API. Pricing is usage-based; new Google Cloud customers receive $300 in trial credits. The documented default quotas include 1,000 evaluation requests per project, region, and minute, with 20 concurrent runs.
Good
- Generates multi-turn synthetic test scenarios.
- Can evaluate production traces and external logs.
- Includes safety evaluations and regression runs.
- Offers automated prompt optimization.
Watch out
- No free plan is listed.
- Usage charges vary by metrics and underlying model costs.
- Default quota limits include 20 concurrent evaluation runs.
Who it suits
This service suits teams evaluating agents’ behavior, safety, and quality, including teams that want to test with synthetic scenarios or production traces. It also supports developers using notebook options or AI coding assistants.
Verdict
Google Cloud Agent Evaluation combines trace scoring, simulated tool behavior, and prompt optimization in an API and web service. Consider its usage-based pricing and documented quotas when planning evaluation workloads.
Plans and prices
From Google Cloud Agent Evaluation's own pricing page, checked 2 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Pay-as-you-go usage | Free | Pricing is usage-based; model-based metric charges depend on dataset input tokens and autorater output · Third-party model evaluation also incurs model inference charges · $0.00003 per 1k input characters and $0.00009 per 1k output characters for computation-based metrics; model-based metrics are charged for underlying autorater model prediction costs. |
The facts
Each one read from Google Cloud Agent Evaluation's own pages, with the date it was checked.
What it does
- Coding assistant support
- Evaluation skills for Gemini CLI or other AI coding assistants provide workflows, dataset schemas, metric guidance, and failure analysis steps.checked 2 Oct 2026
- Compliance
- Google Cloud states that its services undergo independent verification of security, privacy, and compliance controls and achieve certifications against global standards.checked 2 Oct 2026
- Environment simulation
- It can intercept tool calls to inject custom behavior, mocked data, or simulated errors such as HTTP 503 errors and latency spikes.checked 2 Oct 2026
- Evaluation workflow
- The workflow defines evaluation cases, runs inferences, captures behavior traces, computes metrics, analyzes results, and optimizes the agent.checked 2 Oct 2026
- Integrations
- Google provides evaluation notebook launch options for Colab, Colab Enterprise, Agent Platform Workbench, and GitHub.checked 2 Oct 2026
- Metrics
- Prebuilt or custom raters score traces, including reference-based Exact Match and reference-free Helpfulness metrics.checked 2 Oct 2026
- Production traces
- Evaluation can score traces captured from production traffic or external logs without a managed test environment.checked 2 Oct 2026
- Prompt optimization
- Prompt optimization identifies failure points and iteratively proposes targeted updates to system instructions.checked 2 Oct 2026
- Purpose
- Agent evaluation measures and helps improve agents' performance, safety, and quality.checked 2 Oct 2026
- Quota limit
- The documented default quotas include 1,000 evaluation service requests per project per region per minute and 20 concurrent evaluation runs per project per region.checked 2 Oct 2026
- Support
- Google Cloud Basic Support includes documentation, community forums, billing assistance, and Active Assist; customers can upgrade for tailored technical support.checked 2 Oct 2026
- Third-party models
- The console tutorial says the Gen AI evaluation service can evaluate Anthropic and Llama partner models through Agent Platform Model Garden.checked 2 Oct 2026
The company
- Founded
- 1998checked 28 Sep 2026
- Headquarters
- Mountain View, California, United Stateschecked 28 Sep 2026
Where it runs
- Synthetic scenarios
- It can automatically generate diverse, multi-turn synthetic test scenarios from agent instructions and tool definitions.checked 2 Oct 2026
Money
- Trial credits
- New Google Cloud customers get $300 in free credits to run, test, and deploy workloads.checked 2 Oct 2026
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