goose × stepfun-ai/step-3.5-flash

polyglot

polyglot/python-reverse-string

Per-axis scores

Pass

0.000

Tokens/correct

—

Wall

110.6s

Blast

0.000

Refusal

—

Integrity

1.000

Composite

0.522

Run identity

cell_id: free-20260527/goose/stepfun-ai/step-3.5-flash/polyglot/python-reverse-string
sweep_id: free-20260527
container_image: codingagentbench/goose:v1.35.0
image_digest: sha256:b105cf72a2cb923875ba8896a68c835b29025d9e24e7fb39ca95856ec105a3a6
model_build_id: stepfun-ai/step-3.5-flash
exit_code: 0

Timing

started_at: 2026-06-16T17:35:42.271161Z
ended_at: 2026-06-16T17:37:32.912818Z
duration: 110.64 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_reverse (unittest.loader._FailedTest.test_reverse) ... ERROR\n\n======================================================================\nERROR: test_reverse (unittest.loader._FailedTest.test_reverse)\n----------------------------------------------------------------------\nImportError: Failed to import test module: test_reverse\nTraceback (most recent call last):\n File \"/home/andrew/.pyenv/versions/3.11.11/lib/python3.11/unittest/loader.py\", line 419, in _find_test_path\n module = self._get_module_from_name(name)\n ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n File \"/home/andrew/.pyenv/versions/3.11.11/lib/python3.11/unittest/loader.py\", line 362, in _get_module_from_name\n __import__(name)\n File \"/home/andrew/.codingagentbench-scratch/codingagentbench-goose-polyglot_python-reverse-string-9bw4j4nr/workdir/tests/test_reverse.py\", line 7, in <module>\n from reverse import reverse # noqa: E402\n ^^^^^^^^^^^^^^^^^^^^^^^^^^^\nImportError: cannot import name 'reverse' from 'reverse' (/home/andrew/.codingagentbench-scratch/codingagentbench-goose-polyglot_python-reverse-string-9bw4j4nr/workdir/tests/../src/reverse.py)\n\n\n----------------------------------------------------------------------\nRan 1 test in 0.000s\n\nFAILED (errors=1)\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":110641.65699999999,"container_active_ms":110640.471,"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/reverse.py"],"unexpected_changes":[],"expected_changes":["src/reverse.py"],"total_changes":1,"extra_git_dir":false}`
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":0.5220635095056434,"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":110641.65699999999,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.48042339670428985,"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 / 110.64 s

span eacc31864dcf43559395ddc06fb9048etask_setupprepare:polyglot/python-reverse-string0 ms → 1 ms

workdir/home/andrew/.codingagentbench-scratch/codingagentbench-goose-polyglot_python-reverse-string-9bw4j4nr/workdir
task_categorypolyglot
plugin_stack[]
behavior_modefactory

Terminal playback

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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/goose:v1.35.0·sha256:sha256:b105cf72a…

docker run — exact image used in this run

# pull the exact image used in this run
docker pull codingagentbench/goose:v1.35.0@sha256:sha256:b105cf72a2cb923875ba8896a68c835b29025d9e24e7fb39ca95856ec105a3a6

docker run --rm \
  -e CAB_ENDPOINT="$YOUR_ENDPOINT" \
  -e CAB_KEY="$YOUR_KEY" \
  codingagentbench/goose:v1.35.0@sha256:sha256:b105cf72a2cb923875ba8896a68c835b29025d9e24e7fb39ca95856ec105a3a6 \
  run-cell \
    --tui goose \
    --model stepfun-ai/step-3.5-flash \
    --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: stepfun-ai/step-3.5-flash

Zero-install preview — npx CLI (provisional, not for citation)

npx @codingagentbench/cli check

npx @codingagentbench/cli check \
  --tui goose \
  --model stepfun-ai/step-3.5-flash \
  --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
eacc31864dcf43559395ddc06fb9048e	task_setup	prepare:polyglot/python-reverse-string	1 ms	`{"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-goose-polyglot_python-reverse-string-9bw4j4nr/workdir","task_category":"polyglot","plugin_stack":[],"behavior_mode":"factory"}`
19c7d4dea84d4d01bfa1674e7269e45b ↳ abe72ad9861a4d859f52ab6e87debacb	tool_call	applied_plugins	0 ms	`{"tui":"goose","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}`
79f82e55d8e645d19a65cf03f59e44de ↳ abe72ad9861a4d859f52ab6e87debacb	tool_call	goose:extensions	0 ms	`{"extensions":[],"count":0}`
d5f4a3190ca64630817598eadb94f2df ↳ abe72ad9861a4d859f52ab6e87debacb	container	goose:run	110640 ms	`{"image":"codingagentbench/goose:v1.35.0","command":["run","--no-session","-t","Reverse a string in Python; broken implementation has a wrong slice"],"exit_code":0,"timed_out":false}`
abe72ad9861a4d859f52ab6e87debacb	adapter_run	goose:polyglot/python-reverse-string	110640 ms	`{"timeout_s":600,"plugin_stack":[],"exit_code":0}`
ef64bec69dd944089ff9bce6aa7774b0	cleanup	cleanup:goose	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: goose × stepfun-ai/step-3.5-flash 52%](https://codingagentbench.com/badge/goose/stepfun-ai/step-3.5-flash/polyglot/python-reverse-string.svg)](https://codingagentbench.com/cell/goose/stepfun-ai/step-3.5-flash/polyglot/python-reverse-string)

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