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CodingAgentBench

copilot × meta/llama-4-maverick-17b-128e-instruct

polyglot
polyglot/python-palindrome-check

Per-axis scores

Pass
0.000
Tokens/correct
—
Wall
4.5s
Blast
0.000
Refusal
—
Integrity
1.000
Composite
0.579

Run identity

cell_id
expansion-20260616/copilot/meta/llama-4-maverick-17b-128e-instruct/polyglot/python-palindrome-check
sweep_id
expansion-20260616
container_image
codingagentbench/copilot:v1.0.63
image_digest
sha256:6ad0221187dc5c6de50c8aeec50b0eb8eab269c1a681c79efaaa068741a20607
model_build_id
meta/llama-4-maverick-17b-128e-instruct
exit_code
0

Timing

started_at
2026-06-17T02:25:12.673154Z
ended_at
2026-06-17T02:25:17.191121Z
duration
4.52 s
tokens
not recorded

Scorer breakdown

Axis Keys Values
pass_rate pass, exit_code, timed_out, stdout_tail, stderr_tail, partial_score {"pass":0,"exit_code":1,"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) ... FAIL\ntest_not_palindrome_sentence (test_palindrome.TestPalindrome.test_not_palindrome_sentence) ... ok\ntest_punctuation_and_case (test_palindrome.TestPalindrome.test_punctuation_and_case) ... FAIL\ntest_single (test_palindrome.TestPalindrome.test_single) ... ok\n\n======================================================================\nFAIL: test_mixed_case (test_palindrome.TestPalindrome.test_mixed_case)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n File \"/home/andrew/.codingagentbench-scratch/codingagentbench-copilot-polyglot_python-palindrome-check-_fik_d9r/workdir/tests/test_palindrome.py\", line 24, in test_mixed_case\n self.assertTrue(is_palindrome(\"RaceCar\"))\nAssertionError: False is not true\n\n======================================================================\nFAIL: test_punctuation_and_case (test_palindrome.TestPalindrome.test_punctuation_and_case)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n File \"/home/andrew/.codingagentbench-scratch/codingagentbench-copilot-polyglot_python-palindrome-check-_fik_d9r/workdir/tests/test_palindrome.py\", line 27, in test_punctuation_and_case\n self.assertTrue(is_palindrome(\"A man, a plan, a canal: Panama\"))\nAssertionError: False is not true\n\n----------------------------------------------------------------------\nRan 7 tests in 0.001s\n\nFAILED (failures=2)\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":0}
latency wall_clock_ms, container_active_ms, model_call_ms {"wall_clock_ms":4517.967,"container_active_ms":4505.411,"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":[],"unexpected_changes":[],"expected_changes":[],"total_changes":0,"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":0.5790982447697318,"weights":{"pass_rate":0.4,"integrity":0.2,"cost":0.15,"latency":0.15,"blast_radius":0.1},"components":{"pass_rate":0,"integrity":1,"blast_radius":0,"tokens_per_correct_task":0,"wall_clock_ms":4517.967,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.8606549651315454,"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 / 4.52 s
span 9ba138bfa3ba442b9c93450d3e16223ctask_setupprepare:polyglot/python-palindrome-check0 ms → 12 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-copilot-polyglot_python-palindrome-check-_fik_d9r/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/copilot:v1.0.63·sha256:sha256:6ad022118…
docker run — exact image used in this run
# pull the exact image used in this run
docker pull codingagentbench/copilot:v1.0.63@sha256:sha256:6ad0221187dc5c6de50c8aeec50b0eb8eab269c1a681c79efaaa068741a20607

docker run --rm \
  -e CAB_ENDPOINT="$YOUR_ENDPOINT" \
  -e CAB_KEY="$YOUR_KEY" \
  codingagentbench/copilot:v1.0.63@sha256:sha256:6ad0221187dc5c6de50c8aeec50b0eb8eab269c1a681c79efaaa068741a20607 \
  run-cell \
    --tui copilot \
    --model meta/llama-4-maverick-17b-128e-instruct \
    --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: meta/llama-4-maverick-17b-128e-instruct
Zero-install preview — npx CLI (provisional, not for citation)
npx @codingagentbench/cli check
npx @codingagentbench/cli check \
  --tui copilot \
  --model meta/llama-4-maverick-17b-128e-instruct \
  --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
9ba138bfa3ba442b9c93450d3e16223c task_setup prepare:polyglot/python-palindrome-check 12 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-copilot-polyglot_python-palindrome-check-_fik_d9r/workdir","task_category":"polyglot","plugin_stack":[],"behavior_mode":"factory"}
90c3855b29cb42cdbaf5421be7668aae ↳ e2223e5fb4004f4aaee509477fd6f6af tool_call applied_plugins 0 ms {"tui":"copilot","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
6fc4599826044d1fbeba9396fa5983fa ↳ e2223e5fb4004f4aaee509477fd6f6af container copilot:launch 4505 ms {"image":"codingagentbench/copilot:v1.0.63","argv":["-p","Detect palindromes, ignoring case and non-alphanumerics; current impl drops punctuation but not case","--allow-all"],"timeout_s":600,"exit_code":0,"duration_s":4.490504790999694,"timed_out":false}
e2223e5fb4004f4aaee509477fd6f6af adapter_run copilot:polyglot/python-palindrome-check 4506 ms {"timeout_s":600,"plugin_stack":[],"exit_code":0}
79de54e3e8914db39145efb6d914b1ef cleanup cleanup:copilot 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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