AI / FlutterBench / Tasks / flutter-manage-state-with-bloc / flutter-manage-state-with-bloc__t37-gemini-35-pro
Trial Evaluation

flutter-manage-state-with-bloc__t37-gemini-35-pro

PASS
99 % Composite Reward
Model Gemini 3.5 Pro Google
Agent Harness antigravity-sdk Dart MCP + Skills
Tokens 103.3k 98.9k in / 4.4k out
Cost $0.1455 USD estimated
Execution Phase Durations
Environment Setup10.0s
Agent Setup10.0s
Agent Execution2.4m
Verifier24.0s

Scoring Rubric Breakdown

Composite Reward = 0.60×Outcome + 0.30×Quality + 0.10×DX

Detailed criteria evaluation produced by automated test graders and LLM rubrics:

OUTCOMEWeight 60%
99%
flutter_build:bundle wt: 20% 1.00

flutter build bundle succeeded.

bloc_unit_tests wt: 40% 0.99

Bloc unit tests for state transition validation.

outcome_heuristics/bloc_provider_present wt: 40% 1.00

BlocProvider wrapping widget tree in main.dart.

QUALITYWeight 30%
99%
StaticAnalysisGrader wt: 50% 0.99

Zero static analysis issues found.

structural_validation wt: 30% 1.00

Clean separation of concerns and architectural layers.

idiomatic_review wt: 20% 0.99

Dart 3 idioms (pattern matching, records, sealed classes) adherence.

DXWeight 10%
96%
tool_usage wt: 40% 0.96

Dart MCP tools (analyze_files, dtd, hot_reload) utilized efficiently.

trajectory wt: 30% 0.96

Linear problem-solving without excessive tool backtracking.

error_recovery wt: 30% 1.00

Fast turnaround from initial compile warnings to clean build.

Agent Execution Trajectory

Sequential step timeline captured during autonomous agent execution:

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    step0ms
  3. 3
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Generated Code Artifacts

Files modified or generated by the agent during this trial:

📄 artifacts/workspace/lib/bloc/counter_bloc.dart Generated
// Generated implementation for flutter-manage-state-with-bloc
// Model: gemini-3.5-pro
// Verification score: 0.99 (pass)
📄 artifacts/workspace/lib/bloc/counter_event.dart Generated
// Generated implementation for flutter-manage-state-with-bloc
// Model: gemini-3.5-pro
// Verification score: 0.99 (pass)
📄 artifacts/workspace/lib/bloc/counter_state.dart Generated
// Generated implementation for flutter-manage-state-with-bloc
// Model: gemini-3.5-pro
// Verification score: 0.99 (pass)
📄 artifacts/workspace/lib/main.dart Generated
// Generated implementation for flutter-manage-state-with-bloc
// Model: gemini-3.5-pro
// Verification score: 0.99 (pass)
📄 artifacts/workspace/test/counter_bloc_test.dart Generated
// Generated implementation for flutter-manage-state-with-bloc
// Model: gemini-3.5-pro
// Verification score: 0.99 (pass)

Execution & Verifier Logs

Verifier Standard Output (test-stdout.txt)
00:00 +0: loading tests/graders.dart
00:01 +1: Environment setup verification passed.
00:02 +2: Task codebase compilation check.
00:03 +3: All Manage State with BLoC unit tests passed.
00:04 +4: Static analysis: 0 warnings, 0 errors.
00:05 +5: Rubric grader verification completed.
Overall result: PASS (Score: 0.99)