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CodingAgentBench

qwen-code × stepfun-ai/step-3.5-flash

polyglot
polyglot/python-palindrome-check

Per-axis scores

Pass
1.000
Tokens/correct
—
Wall
114.5s
Blast
0.000
Refusal
—
Integrity
1.000
Composite
0.922

Run identity

cell_id
free-20260527/qwen-code/stepfun-ai/step-3.5-flash/polyglot/python-palindrome-check
sweep_id
free-20260527
container_image
codingagentbench/qwen-code:v0.16.1
image_digest
sha256:597f01dba22092cfdcfc7a593f2c5a658a9e647bae60709f04aaba33622c961d
model_build_id
stepfun-ai/step-3.5-flash
exit_code
0

Timing

started_at
2026-06-16T20:43:10.584553Z
ended_at
2026-06-16T20:45:05.110346Z
duration
114.53 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":114525.79299999999,"container_active_ms":114510.183,"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":0.921590184016647,"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":114525.79299999999,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.47726789344431325,"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 / 114.53 s
span 5814f900fc71423ab8053643ca0cff59task_setupprepare:polyglot/python-palindrome-check0 ms → 15 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-qwen-code-polyglot_python-palindrome-check-6h6i5m2z/workdir
task_categorypolyglot
plugin_stack[]
behavior_modefactory

Terminal playback

replay of the run — opencode cells show genuine step timing; others show a span summary
No terminal recording for this run yet — see the span-level trace above, or browse the recordings gallery →

Run it yourself

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

Imagecodingagentbench/qwen-code:v0.16.1·sha256:sha256:597f01dba…
docker run — exact image used in this run
# pull the exact image used in this run
docker pull codingagentbench/qwen-code:v0.16.1@sha256:sha256:597f01dba22092cfdcfc7a593f2c5a658a9e647bae60709f04aaba33622c961d

docker run --rm \
  -e CAB_ENDPOINT="$YOUR_ENDPOINT" \
  -e CAB_KEY="$YOUR_KEY" \
  codingagentbench/qwen-code:v0.16.1@sha256:sha256:597f01dba22092cfdcfc7a593f2c5a658a9e647bae60709f04aaba33622c961d \
  run-cell \
    --tui qwen-code \
    --model stepfun-ai/step-3.5-flash \
    --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: stepfun-ai/step-3.5-flash
Zero-install preview — npx CLI (provisional, not for citation)
npx @codingagentbench/cli check
npx @codingagentbench/cli check \
  --tui qwen-code \
  --model stepfun-ai/step-3.5-flash \
  --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
5814f900fc71423ab8053643ca0cff59 task_setup prepare:polyglot/python-palindrome-check 15 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-qwen-code-polyglot_python-palindrome-check-6h6i5m2z/workdir","task_category":"polyglot","plugin_stack":[],"behavior_mode":"factory"}
5e26b90d4f0b4f159b0021d854bbbb3a ↳ 48f15e27a7f94cb58944ab72fea68bcf tool_call applied_plugins 0 ms {"tui":"qwen-code","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
94e69c332e6240ea865f7b099c23a0ad ↳ 48f15e27a7f94cb58944ab72fea68bcf container qwen-code:run 114510 ms {"image":"codingagentbench/qwen-code:v0.16.1","command":["-p","Detect palindromes, ignoring case and non-alphanumerics; current impl drops punctuation but not case","--yolo"],"model":"stepfun-ai/step-3.5-flash","exit_code":0,"timed_out":false}
48f15e27a7f94cb58944ab72fea68bcf adapter_run qwen-code:polyglot/python-palindrome-check 114511 ms {"timeout_s":600,"plugin_stack":[],"exit_code":0}
88c07787c36c4648beb294a956868564 cleanup cleanup:qwen-code 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: qwen-code × stepfun-ai/step-3.5-flash 92%](https://codingagentbench.com/badge/qwen-code/stepfun-ai/step-3.5-flash/polyglot/python-palindrome-check.svg)](https://codingagentbench.com/cell/qwen-code/stepfun-ai/step-3.5-flash/polyglot/python-palindrome-check)
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CodingAgentBench: qwen-code × stepfun-ai/step-3.5-flash 92%