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CodingAgentBench

codex × openai/gpt-oss-120b

polyglot
polyglot/python-palindrome-check

Per-axis scores

Pass
1.000
Tokens/correct
—
Wall
25.0s
Blast
0.000
Refusal
—
Integrity
1.000
Composite
0.947

Run identity

cell_id
expansion-20260616/codex/openai/gpt-oss-120b/polyglot/python-palindrome-check
sweep_id
expansion-20260616
container_image
codingagentbench/codex:v0.140.0
image_digest
sha256:52116224fbc698acc448343890c4542efcc101a950ef8c8de1eca3e051f228bc
model_build_id
openai/gpt-oss-120b
exit_code
0

Timing

started_at
2026-06-17T01:02:27.675552Z
ended_at
2026-06-17T01:02:52.667531Z
duration
24.99 s
tokens
not recorded

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_basic_false (test_palindrome.TestPalindrome.test_basic_false) ... ok\ntest_basic_true (test_palindrome.TestPalindrome.test_basic_true) ... ok\ntest_empty (test_palindrome.TestPalindrome.test_empty) ... ok\ntest_mixed_case (test_palindrome.TestPalindrome.test_mixed_case) ... ok\ntest_not_palindrome_sentence (test_palindrome.TestPalindrome.test_not_palindrome_sentence) ... ok\ntest_punctuation_and_case (test_palindrome.TestPalindrome.test_punctuation_and_case) ... ok\ntest_single (test_palindrome.TestPalindrome.test_single) ... ok\n\n----------------------------------------------------------------------\nRan 7 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":24991.979,"container_active_ms":24977.872000000003,"model_call_ms":0}
blast_radius blast_radius, added, removed, modified, unexpected_changes, expected_changes, total_changes, extra_git_dir {"blast_radius":0,"added":[],"removed":[],"modified":["src/palindrome.py"],"unexpected_changes":[],"expected_changes":["src/palindrome.py"],"total_changes":1,"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-palindrome-check"}
composite composite, weights, components, note {"composite":0.9471522408058712,"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,"tokens_per_correct_task":0,"wall_clock_ms":24991.979,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.6476816053724744,"clean_blast":1,"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 / 24.99 s
span c8e9245b10444a2a939f7e99660f55cftask_setupprepare:polyglot/python-palindrome-check0 ms → 14 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-codex-polyglot_python-palindrome-check-a__ans8r/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/codex:v0.140.0·sha256:sha256:52116224f…
docker run — exact image used in this run
# pull the exact image used in this run
docker pull codingagentbench/codex:v0.140.0@sha256:sha256:52116224fbc698acc448343890c4542efcc101a950ef8c8de1eca3e051f228bc

docker run --rm \
  -e CAB_ENDPOINT="$YOUR_ENDPOINT" \
  -e CAB_KEY="$YOUR_KEY" \
  codingagentbench/codex:v0.140.0@sha256:sha256:52116224fbc698acc448343890c4542efcc101a950ef8c8de1eca3e051f228bc \
  run-cell \
    --tui codex \
    --model openai/gpt-oss-120b \
    --task polyglot/python-palindrome-check

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 codex \
  --model openai/gpt-oss-120b \
  --endpoint "$YOUR_ENDPOINT" \
  --key "$YOUR_KEY" \
  --task polyglot/python-palindrome-check
# provisional score — not for citation

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

Trace spans (5)

Span Kind Name Duration Attrs / Error
c8e9245b10444a2a939f7e99660f55cf task_setup prepare:polyglot/python-palindrome-check 14 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-codex-polyglot_python-palindrome-check-a__ans8r/workdir","task_category":"polyglot","plugin_stack":[],"behavior_mode":"factory"}
ad425ecb4e9842b683f58d01ece7d6e4 ↳ d18eb5d241b442e7b7e98cb6be27f30c tool_call applied_plugins 0 ms {"tui":"codex","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
7fa6b5f512fc47b885fc5900a9932d4a ↳ d18eb5d241b442e7b7e98cb6be27f30c container codex:launch 24978 ms {"image":"codingagentbench/codex:v0.140.0","argv":["exec","--dangerously-bypass-approvals-and-sandbox","--skip-git-repo-check","--ephemeral","--ignore-user-config","-m","openai/gpt-oss-120b","-c","model_providers.nim={ name = 'nim', base_url = 'http://172.17.0.1:31415/v1', wire_api = 'responses', env_key = 'OPENAI_API_KEY' }","-c","model_provider=\"nim\"","--disable","multi_agent","--disable","browser_use","--disable","browser_use_external","--disable","computer_use","--disable","apps","Detect palindromes, ignoring case and non-alphanumerics; current impl drops punctuation but not case"],"timeout_s":600,"exit_code":0,"duration_s":24.95914698499837,"timed_out":false}
d18eb5d241b442e7b7e98cb6be27f30c adapter_run codex:polyglot/python-palindrome-check 24978 ms {"timeout_s":600,"plugin_stack":[],"exit_code":0}
96888195004e4451ba6fcf6d4944396a cleanup cleanup:codex 0 ms {}

Model calls (0)

# Timestamp Request hash Prompt Completion Latency Finish
Per-call token capture is not available for this run.

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CodingAgentBench: codex × openai/gpt-oss-120b 95%