qwen-code × stepfun-ai/step-3.5-flash

mutations

mutations/python-comparator-swap

Per-axis scores

Pass

1.000

Tokens/correct

—

Wall

43.0s

Blast

0.000

Refusal

—

Integrity

1.000

Composite

0.937

Run identity

cell_id: free-20260527/qwen-code/stepfun-ai/step-3.5-flash/mutations/python-comparator-swap
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: 2026-06-16T20:42:27.113336Z
ended_at: 2026-06-16T20:43:10.120162Z
duration: 43.01 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_already_sorted (test_sorter.TestSorter.test_already_sorted) ... ok\ntest_empty (test_sorter.TestSorter.test_empty) ... ok\ntest_ints_ascending (test_sorter.TestSorter.test_ints_ascending) ... ok\ntest_singleton (test_sorter.TestSorter.test_singleton) ... ok\ntest_strings_ascending (test_sorter.TestSorter.test_strings_ascending) ... ok\ntest_with_negatives (test_sorter.TestSorter.test_with_negatives) ... 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":43006.825999999994,"container_active_ms":42992.871,"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/sorter.py"],"unexpected_changes":[],"expected_changes":["src/sorter.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":"mutations/python-comparator-swap"}`
composite	composite, weights, components, note	{"composite":0.936990218479404,"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":43006.825999999994,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.5799347898626928,"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

speedt = 0 ms / 43.01 s

span 525f29f045b0494c8a0e4ee4568465adtask_setupprepare:mutations/python-comparator-swap0 ms → 13 ms

workdir/home/andrew/.codingagentbench-scratch/codingagentbench-qwen-code-mutations_python-comparator-swap-rjeoukkm/workdir
task_categorymutations
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 mutations/python-comparator-swap

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 mutations/python-comparator-swap
# 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
525f29f045b0494c8a0e4ee4568465ad	task_setup	prepare:mutations/python-comparator-swap	13 ms	`{"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-qwen-code-mutations_python-comparator-swap-rjeoukkm/workdir","task_category":"mutations","plugin_stack":[],"behavior_mode":"factory"}`
75d5bbbfa5824c62ab4c7eac88df6cb9 ↳ 653654477d7d42e5afa789acc0d03766	tool_call	applied_plugins	0 ms	`{"tui":"qwen-code","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}`
2499823e4cce4d7181fbb8b64171021f ↳ 653654477d7d42e5afa789acc0d03766	container	qwen-code:run	42993 ms	`{"image":"codingagentbench/qwen-code:v0.16.1","command":["-p","Operands swapped in a cmp comparator; sort runs in reverse order","--yolo"],"model":"stepfun-ai/step-3.5-flash","exit_code":0,"timed_out":false}`
653654477d7d42e5afa789acc0d03766	adapter_run	qwen-code:mutations/python-comparator-swap	42994 ms	`{"timeout_s":600,"plugin_stack":[],"exit_code":0}`
1efff86a25d94932a1de35fa7a339dbd	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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README / Markdown

[![CodingAgentBench: qwen-code × stepfun-ai/step-3.5-flash 94%](https://codingagentbench.com/badge/qwen-code/stepfun-ai/step-3.5-flash/mutations/python-comparator-swap.svg)](https://codingagentbench.com/cell/qwen-code/stepfun-ai/step-3.5-flash/mutations/python-comparator-swap)

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