: GitBench
Identify merge commit
Tests ability to identify a merge commit from log output. Evaluates recognizing merge-commit characteristics.

These commands set up the repo before the model sees the prompt. They define the starting file structure, staged changes, and Git history.

  1. 01 git init
  2. 02 git config user.email 'test@test.com'
  3. 03 git config user.name 'Test User'
  4. 04 echo 'base' > file.txt
  5. 05 git add file.txt
  6. 06 git commit -m 'Initial commit'
  7. 07 git checkout -b feature-branch
  8. 08 echo 'feature' > feature.txt
  9. 09 git add feature.txt
  10. 10 git commit -m 'Add new feature'
  11. 11 git checkout master || git checkout main
  12. 12 echo 'hotfix' > hotfix.txt
  13. 13 git add hotfix.txt
  14. 14 git commit -m 'Apply hotfix'
  15. 15 git merge feature-branch -m 'Merge feature-branch into main'
Prompt
How many merge commits are in this repository? Use git log --merges to find out. Output ONLY the number, nothing else.
Expected
1
Loading campaign evidence…
deepseek/deepseek-v4-flash:high PASS 100% 561 in → 71 out (68 reasoning)
1
deepseek/deepseek-v4-flash:none PASS 100% 557 in → 1 out (0 reasoning)
1
deepseek/deepseek-v4-flash:none__json_schema PASS 100% 586 in → 8 out (0 reasoning)
1
JSON Schema Structured Output
(raw) { "count": 1 }
mistralai/devstral-2512 PASS 100% 732 in → 2 out
1
mistralai/devstral-2512__json_schema PASS 100% 744 in → 7 out
1
JSON Schema Structured Output
(raw) {"count": 1}
nvidia/nemotron-3-nano-30b-a3b:high PASS 100% 719 in → 86 out (84 reasoning)
1
nvidia/nemotron-3-nano-30b-a3b:high__json_schema PASS 100% 754 in → 102 out (92 reasoning)
1
JSON Schema Structured Output
(raw) { "count": 1 }
nvidia/nemotron-3-nano-30b-a3b:none PASS 100% 744 in → 2 out (0 reasoning)
1
nvidia/nemotron-3-nano-30b-a3b:none__json_schema PASS 100% 743 in → 7 out (0 reasoning)
1
JSON Schema Structured Output
(raw) {"count": 1}
poolside/laguna-xs.2:high PASS 100% 769 in → 137 out (133 reasoning)
1
poolside/laguna-xs.2:high__json_schema PASS 100% 796 in → 202 out (194 reasoning)
1
JSON Schema Structured Output
(raw) {"count": 1}
poolside/laguna-xs.2:none PASS 100% 768 in → 3 out (0 reasoning)
1
poolside/laguna-xs.2:none__json_schema PASS 100% 765 in → 10 out (0 reasoning)
1
JSON Schema Structured Output
(raw) { "count": 1 }
Invalid structured output. Output: 1
JSON Schema Structured Output
Structured Output Error
Structured output schema validation failed: $ must be of type object
Failure: Structured output schema validation failed: $ must be of type object