aider × stepfun-ai/step-3.5-flash

polyglot

polyglot/ts-type-narrowing

Per-axis scores

Pass

0.000

Tokens/correct

—

Wall

60.7s

Blast

0.889

Refusal

—

Integrity

1.000

Composite

0.442

Run identity

cell_id: free-20260527/aider/stepfun-ai/step-3.5-flash/polyglot/ts-type-narrowing#run1
sweep_id: free-20260527
container_image: codingagentbench/aider:v0.86.0
image_digest: sha256:f2cd27890475900f9cb617b1c7a6328989a48e8168e7280ac2247a5d2d26d8a1
model_build_id: stepfun-ai/step-3.5-flash
exit_code: 0

Timing

started_at: 2026-05-29T13:32:52.606387Z
ended_at: 2026-05-29T13:33:53.355200Z
duration: 60.75 s
prompt_tokens: 1,300
completion_tokens: 711
tokens source: TUI stdout

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":60748.813,"container_active_ms":60730.179,"model_call_ms":0}`
blast_radius	blast_radius, added, removed, modified, unexpected_changes, expected_changes, total_changes, extra_git_dir	{"blast_radius":0.8888888888888888,"added":[".aider.chat.history.md",".aider.input.history",".aider.tags.cache.v4/cache.db",".aider/analytics.json",".aider/caches/model_prices_and_context_window.json",".aider/installs.json","build/src/shape.js","build/tests/shape.test.js"],"removed":[],"modified":["src/shape.ts"],"unexpected_changes":[".aider.chat.history.md",".aider.input.history",".aider.tags.cache.v4/cache.db",".aider/analytics.json",".aider/caches/model_prices_and_context_window.json",".aider/installs.json","build/src/shape.js","build/tests/shape.test.js"],"expected_changes":["src/shape.ts"],"total_changes":9,"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/ts-type-narrowing"}`
composite	composite, weights, components, note	{"composite":0.4422045027034015,"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":0.8888888888888888,"tokens_per_correct_task":0,"wall_clock_ms":60748.813,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.5406226106152693,"clean_blast":0.11111111111111116,"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 / 60.75 s

span 2ce4fc629dae4e1c895b2744b2f6aefdtask_setupprepare:polyglot/ts-type-narrowing0 ms → 18 ms

workdir/tmp/codingagentbench-scratch/codingagentbench-aider-polyglot_ts-type-narrowing-dyz0wmq3/workdir
task_categorypolyglot
plugin_stack[]
behavior_modefactory

Terminal playback

replay of the run — opencode cells show genuine step timing; others show a span summary

Run it yourself

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

Imagecodingagentbench/aider:v0.86.0·sha256:sha256:f2cd27890…

docker run — exact image used in this run

# pull the exact image used in this run
docker pull codingagentbench/aider:v0.86.0@sha256:sha256:f2cd27890475900f9cb617b1c7a6328989a48e8168e7280ac2247a5d2d26d8a1

docker run --rm \
  -e CAB_ENDPOINT="$YOUR_ENDPOINT" \
  -e CAB_KEY="$YOUR_KEY" \
  codingagentbench/aider:v0.86.0@sha256:sha256:f2cd27890475900f9cb617b1c7a6328989a48e8168e7280ac2247a5d2d26d8a1 \
  run-cell \
    --tui aider \
    --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 aider \
  --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 (6)

Span	Kind	Name	Duration	Attrs / Error
2ce4fc629dae4e1c895b2744b2f6aefd	task_setup	prepare:polyglot/ts-type-narrowing	18 ms	`{"workdir":"/tmp/codingagentbench-scratch/codingagentbench-aider-polyglot_ts-type-narrowing-dyz0wmq3/workdir","task_category":"polyglot","plugin_stack":[],"behavior_mode":"factory"}`
8a52b67e61b64ced990e36fd6178c6dc ↳ b35aa26c67ad424a8c72ae088ce0e7a1	task_setup	aider:git-init-marker	0 ms	`{"workdir":"/tmp/codingagentbench-scratch/codingagentbench-aider-polyglot_ts-type-narrowing-dyz0wmq3/workdir","git_dir_exists":true}`
9fadfeaba29c46dfb6256bdde4e85ebd ↳ b35aa26c67ad424a8c72ae088ce0e7a1	tool_call	applied_plugins	0 ms	`{"tui":"aider","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}`
31523d15252f4faea375f695c9210798 ↳ b35aa26c67ad424a8c72ae088ce0e7a1	container	aider:launch	60731 ms	{"image":"codingagentbench/aider:v0.86.0","argv":["--yes-always","--no-stream","--no-check-update","--no-analytics","--no-show-model-warnings","--no-suggest-shell-commands","--no-auto-commits","--no-pretty","--openai-api-base","http://172.17.0.1:31415/v1","--openai-api-key","sk-ijYE3GGIl2pTqBtwcCcuaIsZzYIIFrIWLMG3qmOK","--model","openai/stepfun-ai/step-3.5-flash","--subtree-only","--message","Discriminated union not narrowed properly; switch falls through to default and returns wrong result"],"timeout_s":600,"exit_code":0,"duration_s":60.71350444800191,"timed_out":false}
b35aa26c67ad424a8c72ae088ce0e7a1	adapter_run	aider:polyglot/ts-type-narrowing	60731 ms	`{"timeout_s":600,"plugin_stack":[],"exit_code":0}`
548dc0b97ba3448dba45c5234b7bf805	cleanup	cleanup:aider	0 ms	`{}`

Model calls (0)

#	Timestamp	Request hash	Prompt	Completion	Latency	Finish
Per-call records not captured for this run. TUI-reported session totals: 1,300 prompt + 711 completion tokens.

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README / Markdown

[![CodingAgentBench: aider × stepfun-ai/step-3.5-flash 44%](https://codingagentbench.com/badge/aider/stepfun-ai/step-3.5-flash/polyglot/ts-type-narrowing.svg)](https://codingagentbench.com/cell/aider/stepfun-ai/step-3.5-flash/polyglot/ts-type-narrowing)

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