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CodingAgentBench

pi × stepfun-ai/step-3.5-flash

mutations
mutations/ts-arg-parser-default

Per-axis scores

Pass
0.000
Tokens/correct
—
Wall
151.1s
Blast
0.800
Refusal
—
Integrity
1.000
Composite
0.438

Run identity

cell_id
expansion-20260616/pi/stepfun-ai/step-3.5-flash/mutations/ts-arg-parser-default
sweep_id
expansion-20260616
container_image
codingagentbench/pi:v0.73.1
image_digest
sha256:272792a5fb41b2290cf7f75c094471fc9bc9933cefdb77c68c5122bbfa2044e6
model_build_id
stepfun-ai/step-3.5-flash
exit_code
0

Timing

started_at
2026-06-17T03:13:45.498563Z
ended_at
2026-06-17T03:16:16.600842Z
duration
151.10 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":2,"timed_out":false,"stdout_tail":"tsconfig.json(5,25): error TS5107: Option 'moduleResolution=node10' is deprecated and will stop functioning in TypeScript 7.0. Specify compilerOption '\"ignoreDeprecations\": \"6.0\"' to silence this error.\n Visit https://aka.ms/ts6 for migration information.\n","stderr_tail":"","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":151102.279,"container_active_ms":151087.247,"model_call_ms":0}
blast_radius blast_radius, added, removed, modified, unexpected_changes, expected_changes, total_changes, extra_git_dir {"blast_radius":0.8,"added":["build/src/cli.js","build/tests/cli.test.js","package-lock.json"],"removed":[],"modified":["package.json","src/cli.ts"],"unexpected_changes":["build/src/cli.js","build/tests/cli.test.js","package-lock.json","package.json"],"expected_changes":["src/cli.ts"],"total_changes":5,"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/ts-arg-parser-default"}
composite composite, weights, components, note {"composite":0.4379624328499561,"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":0.8,"tokens_per_correct_task":0,"wall_clock_ms":151102.279,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.45308288566637417,"clean_blast":0.19999999999999996,"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 / 151.10 s
span a9baa2b2e8e148a9932a42d52ee05468task_setupprepare:mutations/ts-arg-parser-default0 ms → 15 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-pi-mutations_ts-arg-parser-default-sfzat3r4/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/pi:v0.73.1·sha256:sha256:272792a5f…
docker run — exact image used in this run
# pull the exact image used in this run
docker pull codingagentbench/pi:v0.73.1@sha256:sha256:272792a5fb41b2290cf7f75c094471fc9bc9933cefdb77c68c5122bbfa2044e6

docker run --rm \
  -e CAB_ENDPOINT="$YOUR_ENDPOINT" \
  -e CAB_KEY="$YOUR_KEY" \
  codingagentbench/pi:v0.73.1@sha256:sha256:272792a5fb41b2290cf7f75c094471fc9bc9933cefdb77c68c5122bbfa2044e6 \
  run-cell \
    --tui pi \
    --model stepfun-ai/step-3.5-flash \
    --task mutations/ts-arg-parser-default

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 pi \
  --model stepfun-ai/step-3.5-flash \
  --endpoint "$YOUR_ENDPOINT" \
  --key "$YOUR_KEY" \
  --task mutations/ts-arg-parser-default
# 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
a9baa2b2e8e148a9932a42d52ee05468 task_setup prepare:mutations/ts-arg-parser-default 15 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-pi-mutations_ts-arg-parser-default-sfzat3r4/workdir","task_category":"mutations","plugin_stack":[],"behavior_mode":"factory"}
076323ba392449aca8d7f348a3e6241f ↳ a291625102db440d8861695eee8a154b tool_call applied_plugins 0 ms {"tui":"pi","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
c33bdf55e8e7497c8d47a857b2cab374 ↳ a291625102db440d8861695eee8a154b container pi:launch 151087 ms {"image":"codingagentbench/pi:v0.73.1","argv":["--print","--no-session","--offline","--provider","nim","--model","stepfun-ai/step-3.5-flash","--api-key","sk-ijYE3GGIl2pTqBtwcCcuaIsZzYIIFrIWLMG3qmOK","Default port literal mutated from 8080 to 80; tests fail"],"timeout_s":600,"exit_code":0,"duration_s":151.0703373529832,"timed_out":false}
a291625102db440d8861695eee8a154b adapter_run pi:mutations/ts-arg-parser-default 151087 ms {"timeout_s":600,"plugin_stack":[],"exit_code":0}
6e826f8aab5a430bb9ad0bfa08283e51 cleanup cleanup:pi 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: pi × stepfun-ai/step-3.5-flash 44%](https://codingagentbench.com/badge/pi/stepfun-ai/step-3.5-flash/mutations/ts-arg-parser-default.svg)](https://codingagentbench.com/cell/pi/stepfun-ai/step-3.5-flash/mutations/ts-arg-parser-default)
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<a href="https://codingagentbench.com/cell/pi/stepfun-ai/step-3.5-flash/mutations/ts-arg-parser-default"><img src="https://codingagentbench.com/badge/pi/stepfun-ai/step-3.5-flash/mutations/ts-arg-parser-default.svg" alt="CodingAgentBench: pi × stepfun-ai/step-3.5-flash 44%" /></a>
CodingAgentBench: pi × stepfun-ai/step-3.5-flash 44%