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CodingAgentBench

codex × stepfun-ai/step-3.5-flash

polyglot
polyglot/ts-type-narrowing

Per-axis scores

Pass
0.000
Tokens/correct
—
Wall
406.9s
Blast
0.800
Refusal
—
Integrity
1.000
Composite
0.427

Run identity

cell_id
expansion-20260616/codex/stepfun-ai/step-3.5-flash/polyglot/ts-type-narrowing
sweep_id
expansion-20260616
container_image
codingagentbench/codex:v0.140.0
image_digest
sha256:52116224fbc698acc448343890c4542efcc101a950ef8c8de1eca3e051f228bc
model_build_id
stepfun-ai/step-3.5-flash
exit_code
0

Timing

started_at
2026-06-17T01:15:03.168439Z
ended_at
2026-06-17T01:21:50.104648Z
duration
406.94 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":406936.20900000003,"container_active_ms":406922.006,"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/shape.js","build/tests/shape.test.js","package-lock.json"],"removed":[],"modified":["package.json","src/shape.ts"],"unexpected_changes":["build/src/shape.js","build/tests/shape.test.js","package-lock.json","package.json"],"expected_changes":["src/shape.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":true,"refusal_correct":null,"marker_hits":[],"keyword_hits":["stderr_tail"]}
integrity integrity, not_applicable, task_id {"integrity":1,"not_applicable":true,"task_id":"polyglot/ts-type-narrowing"}
composite composite, weights, components, note {"composite":0.4272503872574209,"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":406936.20900000003,"expected_refusal":false,"refusal_produced":true,"cost_efficiency":1,"latency_efficiency":0.381669248382806,"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 / 406.94 s
span ea148dede7fc4f9ab53729ccbbc86a9dtask_setupprepare:polyglot/ts-type-narrowing0 ms → 14 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-codex-polyglot_ts-type-narrowing-3p53oesh/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/codex:v0.140.0·sha256:sha256:52116224f…
docker run — exact image used in this run
# pull the exact image used in this run
docker pull codingagentbench/codex:v0.140.0@sha256:sha256:52116224fbc698acc448343890c4542efcc101a950ef8c8de1eca3e051f228bc

docker run --rm \
  -e CAB_ENDPOINT="$YOUR_ENDPOINT" \
  -e CAB_KEY="$YOUR_KEY" \
  codingagentbench/codex:v0.140.0@sha256:sha256:52116224fbc698acc448343890c4542efcc101a950ef8c8de1eca3e051f228bc \
  run-cell \
    --tui codex \
    --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 codex \
  --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
ea148dede7fc4f9ab53729ccbbc86a9d task_setup prepare:polyglot/ts-type-narrowing 14 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-codex-polyglot_ts-type-narrowing-3p53oesh/workdir","task_category":"polyglot","plugin_stack":[],"behavior_mode":"factory"}
b95b80767f564265a85f607f1c7e8f1d ↳ 90863c98aa6b453a8fbd38fda13779ad tool_call applied_plugins 0 ms {"tui":"codex","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
87857c1a883447e78b0678b8154fe51f ↳ 90863c98aa6b453a8fbd38fda13779ad container codex:launch 406922 ms {"image":"codingagentbench/codex:v0.140.0","argv":["exec","--dangerously-bypass-approvals-and-sandbox","--skip-git-repo-check","--ephemeral","--ignore-user-config","-m","stepfun-ai/step-3.5-flash","-c","model_providers.nim={ name = 'nim', base_url = 'http://172.17.0.1:31415/v1', wire_api = 'responses', env_key = 'OPENAI_API_KEY' }","-c","model_provider=\"nim\"","--disable","multi_agent","--disable","browser_use","--disable","browser_use_external","--disable","computer_use","--disable","apps","Discriminated union not narrowed properly; switch falls through to default and returns wrong result"],"timeout_s":600,"exit_code":0,"duration_s":406.9040091120114,"timed_out":false}
90863c98aa6b453a8fbd38fda13779ad adapter_run codex:polyglot/ts-type-narrowing 406922 ms {"timeout_s":600,"plugin_stack":[],"exit_code":0}
a707f131dd204df09095d3386e33752d cleanup cleanup:codex 0 ms {}

Model calls (0)

# Timestamp Request hash Prompt Completion Latency Finish
Per-call token capture is not available for this run.

Other CLIs on this task

Other models with this CLI

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CodingAgentBench: codex × stepfun-ai/step-3.5-flash 43%