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CodingAgentBench

pi × stepfun-ai/step-3.5-flash

polyglot
polyglot/go-http-handler-fix

Per-axis scores

Pass
1.000
Tokens/correct
—
Wall
43.0s
Blast
0.000
Refusal
—
Integrity
1.000
Composite
0.937

Run identity

cell_id
expansion-20260616/pi/stepfun-ai/step-3.5-flash/polyglot/go-http-handler-fix
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
2026-06-17T03:15:35.188294Z
ended_at
2026-06-17T03:16:18.155670Z
duration
42.97 s
tokens
not recorded

Scorer breakdown

Axis Keys Values
pass_rate pass, exit_code, timed_out, stdout_tail, stderr_tail, partial_score {"pass":1,"exit_code":0,"timed_out":false,"stdout_tail":"ok \tcodingagentbench/gohttphandler\t0.003s\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":1}
latency wall_clock_ms, container_active_ms, model_call_ms {"wall_clock_ms":42967.376000000004,"container_active_ms":42954.649000000005,"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":["handler.go"],"unexpected_changes":[],"expected_changes":["handler.go"],"total_changes":1,"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":["stdout_tail"]}
integrity integrity, not_applicable, task_id {"integrity":1,"not_applicable":true,"task_id":"polyglot/go-http-handler-fix"}
composite composite, weights, components, note {"composite":0.9370065336721521,"weights":{"pass_rate":0.4,"integrity":0.2,"cost":0.15,"latency":0.15,"blast_radius":0.1},"components":{"pass_rate":1,"integrity":1,"blast_radius":0,"tokens_per_correct_task":0,"wall_clock_ms":42967.376000000004,"expected_refusal":false,"refusal_produced":true,"cost_efficiency":1,"latency_efficiency":0.5800435578143471,"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
t = 0 ms / 42.97 s
span 85904c7beff04d9b9f033906e3d9d226task_setupprepare:polyglot/go-http-handler-fix0 ms → 12 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-pi-polyglot_go-http-handler-fix-6qb15kur/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/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 polyglot/go-http-handler-fix

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 polyglot/go-http-handler-fix
# 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
85904c7beff04d9b9f033906e3d9d226 task_setup prepare:polyglot/go-http-handler-fix 12 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-pi-polyglot_go-http-handler-fix-6qb15kur/workdir","task_category":"polyglot","plugin_stack":[],"behavior_mode":"factory"}
d86c4116e9f540b692137c8b87e72276 ↳ 06ccd733e7a849578e8c513f30ec95d7 tool_call applied_plugins 0 ms {"tui":"pi","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
1e94b4e06dfc4e15ae420ddeb3be2c1d ↳ 06ccd733e7a849578e8c513f30ec95d7 container pi:launch 42955 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","HTTP handler writes body before setting status code, locking the response to 200"],"timeout_s":600,"exit_code":0,"duration_s":42.93916015001014,"timed_out":false}
06ccd733e7a849578e8c513f30ec95d7 adapter_run pi:polyglot/go-http-handler-fix 42955 ms {"timeout_s":600,"plugin_stack":[],"exit_code":0}
ebb6f0b4336e44619b30dff3178648fd 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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[![CodingAgentBench: pi × stepfun-ai/step-3.5-flash 94%](https://codingagentbench.com/badge/pi/stepfun-ai/step-3.5-flash/polyglot/go-http-handler-fix.svg)](https://codingagentbench.com/cell/pi/stepfun-ai/step-3.5-flash/polyglot/go-http-handler-fix)
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<a href="https://codingagentbench.com/cell/pi/stepfun-ai/step-3.5-flash/polyglot/go-http-handler-fix"><img src="https://codingagentbench.com/badge/pi/stepfun-ai/step-3.5-flash/polyglot/go-http-handler-fix.svg" alt="CodingAgentBench: pi × stepfun-ai/step-3.5-flash 94%" /></a>
CodingAgentBench: pi × stepfun-ai/step-3.5-flash 94%