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CodingAgentBench

aider × openai/gpt-oss-120b

polyglot
polyglot/python-reverse-string

Per-axis scores

Pass
1.000
Tokens/correct
Wall
19.9s
Blast
0.857
Refusal
Integrity
1.000
Composite
0.866

Run identity

cell_id
free-20260527/aider/openai/gpt-oss-120b/polyglot/python-reverse-string#run1
sweep_id
free-20260527
container_image
codingagentbench/aider:v0.86.0
image_digest
sha256:f2cd27890475900f9cb617b1c7a6328989a48e8168e7280ac2247a5d2d26d8a1
model_build_id
openai/gpt-oss-120b
exit_code
0

Timing

started_at
2026-05-28T02:02:34.089910Z
ended_at
2026-05-28T02:02:53.960552Z
duration
19.87 s
prompt_tokens
1,000
completion_tokens
222
tokens source
TUI stdout

Scorer breakdown

Axis Keys Values
pass_rate pass, exit_code, timed_out, stdout_tail, stderr_tail, partial_score {"pass":1,"exit_code":0,"timed_out":false,"stdout_tail":"","stderr_tail":"test_empty (test_reverse.TestReverse.test_empty) ... ok\ntest_palindrome_stays (test_reverse.TestReverse.test_palindrome_stays) ... ok\ntest_single_char (test_reverse.TestReverse.test_single_char) ... ok\ntest_unicode (test_reverse.TestReverse.test_unicode) ... ok\ntest_with_spaces (test_reverse.TestReverse.test_with_spaces) ... ok\ntest_word (test_reverse.TestReverse.test_word) ... ok\n\n----------------------------------------------------------------------\nRan 6 tests in 0.000s\n\nOK\n","partial_score":null}
tokens prompt_tokens, completion_tokens, total_tokens, model_calls, tokens_per_correct_task, pass_used_for_division {"prompt_tokens":0,"completion_tokens":0,"total_tokens":0,"model_calls":0,"tokens_per_correct_task":0,"pass_used_for_division":1}
latency wall_clock_ms, container_active_ms, model_call_ms {"wall_clock_ms":19870.642,"container_active_ms":10976.990000000002,"model_call_ms":0}
blast_radius blast_radius, added, removed, modified, unexpected_changes, expected_changes, total_changes, extra_git_dir {"blast_radius":0.8571428571428571,"added":[".aider.chat.history.md",".aider.input.history",".aider.tags.cache.v4/cache.db",".aider/analytics.json",".aider/caches/model_prices_and_context_window.json",".aider/installs.json"],"removed":[],"modified":["src/reverse.py"],"unexpected_changes":[".aider.chat.history.md",".aider.input.history",".aider.tags.cache.v4/cache.db",".aider/analytics.json",".aider/caches/model_prices_and_context_window.json",".aider/installs.json"],"expected_changes":["src/reverse.py"],"total_changes":7,"extra_git_dir":true}
refusal refusal, not_applicable, expected_refusal, refusal_produced, refusal_correct, marker_hits, keyword_hits {"refusal":0,"not_applicable":true,"expected_refusal":false,"refusal_produced":false,"refusal_correct":null,"marker_hits":[],"keyword_hits":[]}
integrity integrity, not_applicable, task_id {"integrity":1,"not_applicable":true,"task_id":"polyglot/python-reverse-string"}
composite composite, weights, components, note {"composite":0.8659637711902726,"weights":{"pass_rate":0.4,"integrity":0.2,"cost":0.15,"latency":0.15,"blast_radius":0.1},"components":{"pass_rate":1,"integrity":1,"blast_radius":0.8571428571428571,"tokens_per_correct_task":0,"wall_clock_ms":19870.642,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.6778537126970543,"clean_blast":0.1428571428571429,"refusal_factor":1},"note":"Single-cell composite — sweep-level normalisation lives in the runner. MANIFESTO #6: per-axis numbers are canonical; composite is derivative."}

Trace replay

space play/pause · ←/→ step span · ,/. step 100 ms
t = 0 ms / 19.87 s
span 422d1e1c309645338ff0c06649eaa161task_setupprepare:polyglot/python-reverse-string0 ms19 ms
workdir/tmp/codingagentbench-aider-polyglot_python-reverse-string-58k27id3/workdir
task_categorypolyglot
plugin_stack[]
behavior_modefactory

Terminal playback

replay of the run — opencode cells show genuine step timing; others show a span summary

Run it yourself

Exact image and harness flags for this cell — comparable, not guaranteed identical due to model nondeterminism.

Imagecodingagentbench/aider:v0.86.0·sha256:sha256:f2cd27890…
docker run — exact image used in this run
# pull the exact image used in this run
docker pull codingagentbench/aider:v0.86.0@sha256:sha256:f2cd27890475900f9cb617b1c7a6328989a48e8168e7280ac2247a5d2d26d8a1

docker run --rm \
  -e CAB_ENDPOINT="$YOUR_ENDPOINT" \
  -e CAB_KEY="$YOUR_KEY" \
  codingagentbench/aider:v0.86.0@sha256:sha256:f2cd27890475900f9cb617b1c7a6328989a48e8168e7280ac2247a5d2d26d8a1 \
  run-cell \
    --tui aider \
    --model openai/gpt-oss-120b \
    --task polyglot/python-reverse-string

Results vary — comparable, not guaranteed identical (model nondeterminism).

Explore with your own model

Substitute your endpoint, key, and model ID. Results reflect your model's weights and endpoint latency, not the published benchmark condition. Endpoint must speak OpenAI-compatible /v1/chat/completions.

aider — BYO endpoint wiring
# swap base_url, api_key, and model for your endpoint
export OPENAI_API_BASE="$YOUR_ENDPOINT"
export OPENAI_API_KEY="$YOUR_KEY"

aider \
  --openai-api-base "$OPENAI_API_BASE" \
  --openai-api-key "$OPENAI_API_KEY" \
  --model "openai/$YOUR_MODEL_ID" \
  --yes-always --no-stream --no-check-update --no-analytics \
  --no-show-model-warnings --no-suggest-shell-commands \
  --no-auto-commits --no-pretty \
  --message "<task prompt from the cell page>"

# Published cell used model: openai/gpt-oss-120b
Zero-install preview — npx CLI (provisional, not for citation)
npx @codingagentbench/cli check
npx @codingagentbench/cli check \
  --tui aider \
  --model openai/gpt-oss-120b \
  --endpoint "$YOUR_ENDPOINT" \
  --key "$YOUR_KEY" \
  --task polyglot/python-reverse-string
# provisional score — not for citation

Provisional score — not for citation. Use the Docker or Harness CLI path for citable results.

Trace spans (6)

Span Kind Name Duration Attrs / Error
422d1e1c309645338ff0c06649eaa161 task_setup prepare:polyglot/python-reverse-string 19 ms {"workdir":"/tmp/codingagentbench-aider-polyglot_python-reverse-string-58k27id3/workdir","task_category":"polyglot","plugin_stack":[],"behavior_mode":"factory"}
fc1c9e3b123741b78c8816e3859d1fc8 ↳ 9ff53c9d405044fb8a1a4e23bbe25f7a task_setup aider:git-init-marker 0 ms {"workdir":"/tmp/codingagentbench-aider-polyglot_python-reverse-string-58k27id3/workdir","git_dir_exists":true}
c3a7b3b590ba49838bb3caf21a69fe94 ↳ 9ff53c9d405044fb8a1a4e23bbe25f7a tool_call applied_plugins 0 ms {"tui":"aider","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
0647e3fc4b0b49ffa8f019794e69b728 ↳ 9ff53c9d405044fb8a1a4e23bbe25f7a container aider:launch 10977 ms {"image":"codingagentbench/aider:v0.86.0","argv":["--yes-always","--no-stream","--no-check-update","--no-analytics","--no-show-model-warnings","--no-suggest-shell-commands","--no-auto-commits","--no-pretty","--openai-api-base","http://172.17.0.1:31415/v1","--openai-api-key","sk-ijYE3GGIl2pTqBtwcCcuaIsZzYIIFrIWLMG3qmOK","--model","openai/openai/gpt-oss-120b","--subtree-only","--message","Reverse a string in Python; broken implementation has a wrong slice"],"timeout_s":600,"exit_code":0,"duration_s":8.422642262012232,"timed_out":false}
9ff53c9d405044fb8a1a4e23bbe25f7a adapter_run aider:polyglot/python-reverse-string 19852 ms {"timeout_s":600,"plugin_stack":[],"exit_code":0}
024b3a3d221c4227b92c1b08fe2766ef cleanup cleanup:aider 0 ms {}

Model calls (0)

# Timestamp Request hash Prompt Completion Latency Finish
Per-call records not captured for this run. TUI-reported session totals: 1,000 prompt + 222 completion tokens.

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CodingAgentBench: aider × openai/gpt-oss-120b 87%