openhands × stepfun-ai/step-3.5-flash

polyglot

polyglot/ts-type-narrowing

Per-axis scores

Pass

0.000

Tokens/correct

—

Wall

122.4s

Blast

0.667

Refusal

—

Integrity

1.000

Composite

0.454

Run identity

cell_id: free-20260527/openhands/stepfun-ai/step-3.5-flash/polyglot/ts-type-narrowing
sweep_id: free-20260527
container_image: codingagentbench/openhands:1.7.0
image_digest: sha256:7fcaf222644a5cb0afffe018f038d270130b5af3b8af366cd960f2d596a4342c
model_build_id: stepfun-ai/step-3.5-flash
exit_code: 0

Timing

started_at: 2026-06-16T19:10:11.929447Z
ended_at: 2026-06-16T19:12:14.373980Z
duration: 122.44 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":122444.53300000001,"container_active_ms":122443.45300000001,"model_call_ms":0}`
blast_radius	blast_radius, added, removed, modified, unexpected_changes, expected_changes, total_changes, extra_git_dir	`{"blast_radius":0.6666666666666666,"added":["build/src/shape.js","build/tests/shape.test.js"],"removed":[],"modified":["src/shape.ts"],"unexpected_changes":["build/src/shape.js","build/tests/shape.test.js"],"expected_changes":["src/shape.ts"],"total_changes":3,"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/ts-type-narrowing"}`
composite	composite, weights, components, note	{"composite":0.4540202296935775,"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":0.6666666666666666,"tokens_per_correct_task":0,"wall_clock_ms":122444.53300000001,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.4712459757349615,"clean_blast":0.33333333333333337,"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 / 122.44 s

span d8fe2c15330a4868b993e1e8f1a1d0e3task_setupprepare:polyglot/ts-type-narrowing0 ms → 1 ms

workdir/home/andrew/.codingagentbench-scratch/codingagentbench-openhands-polyglot_ts-type-narrowing-8_7w4l47/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/openhands:1.7.0·sha256:sha256:7fcaf2226…

docker run — exact image used in this run

# pull the exact image used in this run
docker pull codingagentbench/openhands:1.7.0@sha256:sha256:7fcaf222644a5cb0afffe018f038d270130b5af3b8af366cd960f2d596a4342c

docker run --rm \
  -e CAB_ENDPOINT="$YOUR_ENDPOINT" \
  -e CAB_KEY="$YOUR_KEY" \
  codingagentbench/openhands:1.7.0@sha256:sha256:7fcaf222644a5cb0afffe018f038d270130b5af3b8af366cd960f2d596a4342c \
  run-cell \
    --tui openhands \
    --model stepfun-ai/step-3.5-flash \
    --task polyglot/ts-type-narrowing

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 openhands \
  --model stepfun-ai/step-3.5-flash \
  --endpoint "$YOUR_ENDPOINT" \
  --key "$YOUR_KEY" \
  --task polyglot/ts-type-narrowing
# 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
d8fe2c15330a4868b993e1e8f1a1d0e3	task_setup	prepare:polyglot/ts-type-narrowing	1 ms	`{"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-openhands-polyglot_ts-type-narrowing-8_7w4l47/workdir","task_category":"polyglot","plugin_stack":[],"behavior_mode":"factory"}`
8fdcdc7103fa4a0b9386a88a5d249b33 ↳ 8dbf7fdb53c74d8eaf37006d5a3a0c1d	tool_call	applied_plugins	0 ms	`{"tui":"openhands","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}`
f46dafe999614a37a70dfb9e41898929 ↳ 8dbf7fdb53c74d8eaf37006d5a3a0c1d	container	openhands:run	122443 ms	`{"image":"codingagentbench/openhands:1.7.0","command":["/app/.venv/bin/python","/opt/openhands_run.py","-t","Discriminated union not narrowed properly; switch falls through to default and returns wrong result","--workspace","/workspace"],"deviation":"root+docker.sock; see module docstring","exit_code":0,"timed_out":false,"docker_sock_mounted":true,"read_only":false}`
8dbf7fdb53c74d8eaf37006d5a3a0c1d	adapter_run	openhands:polyglot/ts-type-narrowing	122443 ms	`{"timeout_s":600,"plugin_stack":[],"exit_code":0}`
49b9bab31bcf44929d55be1b95e79d46	cleanup	cleanup:openhands	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: openhands × stepfun-ai/step-3.5-flash 45%](https://codingagentbench.com/badge/openhands/stepfun-ai/step-3.5-flash/polyglot/ts-type-narrowing.svg)](https://codingagentbench.com/cell/openhands/stepfun-ai/step-3.5-flash/polyglot/ts-type-narrowing)

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