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AIMODELRACE
Operations

Best agent for testing & qa

Writing tests, exploratory testing and catching regressions.

Leader

Narrow lead

Claude Sonnet 5.5

Index

92

Lead

+1.5

% ahead

1.7%

over Claude Opus 5.5.

Full ranking

Task index, 0 to 100. Bars are scaled to the field, so small gaps look small.

  1. 1
    Claude Sonnet 5.5
    92

    Fast, thorough test generation.

  2. 2
    Claude Opus 5.5
    −1.590.5

    Best at edge cases.

  3. 3
    GPT-6 Astra
    −2.090

    Strong UI exploratory testing.

  4. 4
    QA Wolf
    −7.085

    Managed end-to-end testing with AI.

Key takeaways
  • 1Agents write good unit and integration tests when given clear behaviour specs.
  • 2Computer-use agents can now do exploratory UI testing.
  • 3Watch for tests that assert the bug.

Recommended setup

Coding agent generating tests in CI, plus a computer-use agent running exploratory passes on staging.

Prompts that work

Edge-case tests

Write tests for {{function_or_feature}} covering: normal cases, boundaries, invalid input, concurrency and failure of dependencies. Each test name should describe the behaviour. Do not change the implementation.

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