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CodingAgentBench

copilot × stepfun-ai/step-3.5-flash

polyglot
polyglot/go-json-parser-fix

Per-axis scores

Pass
1.000
Tokens/correct
—
Wall
35.1s
Blast
0.000
Refusal
—
Integrity
1.000
Composite
0.941

Run identity

cell_id
expansion-20260616/copilot/stepfun-ai/step-3.5-flash/polyglot/go-json-parser-fix
sweep_id
expansion-20260616
container_image
codingagentbench/copilot:v1.0.63
image_digest
sha256:6ad0221187dc5c6de50c8aeec50b0eb8eab269c1a681c79efaaa068741a20607
model_build_id
stepfun-ai/step-3.5-flash
exit_code
0

Timing

started_at
2026-06-17T02:00:12.156668Z
ended_at
2026-06-17T02:00:47.281527Z
duration
35.13 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/gojsonparser\t0.002s\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":35124.859000000004,"container_active_ms":35110.72,"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":["parser.go"],"unexpected_changes":[],"expected_changes":["parser.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":false,"refusal_correct":null,"marker_hits":[],"keyword_hits":[]}
integrity integrity, not_applicable, task_id {"integrity":1,"not_applicable":true,"task_id":"polyglot/go-json-parser-fix"}
composite composite, weights, components, note {"composite":0.94066644234851,"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":35124.859000000004,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.6044429489900662,"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 / 35.13 s
span 04ca1e6b4f7c4de3886a68c75f4118a5task_setupprepare:polyglot/go-json-parser-fix0 ms → 14 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-copilot-polyglot_go-json-parser-fix-acnnujsv/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/copilot:v1.0.63·sha256:sha256:6ad022118…
docker run — exact image used in this run
# pull the exact image used in this run
docker pull codingagentbench/copilot:v1.0.63@sha256:sha256:6ad0221187dc5c6de50c8aeec50b0eb8eab269c1a681c79efaaa068741a20607

docker run --rm \
  -e CAB_ENDPOINT="$YOUR_ENDPOINT" \
  -e CAB_KEY="$YOUR_KEY" \
  codingagentbench/copilot:v1.0.63@sha256:sha256:6ad0221187dc5c6de50c8aeec50b0eb8eab269c1a681c79efaaa068741a20607 \
  run-cell \
    --tui copilot \
    --model stepfun-ai/step-3.5-flash \
    --task polyglot/go-json-parser-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 copilot \
  --model stepfun-ai/step-3.5-flash \
  --endpoint "$YOUR_ENDPOINT" \
  --key "$YOUR_KEY" \
  --task polyglot/go-json-parser-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
04ca1e6b4f7c4de3886a68c75f4118a5 task_setup prepare:polyglot/go-json-parser-fix 14 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-copilot-polyglot_go-json-parser-fix-acnnujsv/workdir","task_category":"polyglot","plugin_stack":[],"behavior_mode":"factory"}
ffa831fd81d3431896b2fcd1be1350be ↳ 93e0822877664266976c92eed88ba28e tool_call applied_plugins 0 ms {"tui":"copilot","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
7e7bf3fd115844e1aa61828ef6d89abb ↳ 93e0822877664266976c92eed88ba28e container copilot:launch 35111 ms {"image":"codingagentbench/copilot:v1.0.63","argv":["-p","JSON parser drops zero-valued fields because of `omitempty` on a required field","--allow-all"],"timeout_s":600,"exit_code":0,"duration_s":34.974092932010535,"timed_out":false}
93e0822877664266976c92eed88ba28e adapter_run copilot:polyglot/go-json-parser-fix 35111 ms {"timeout_s":600,"plugin_stack":[],"exit_code":0}
807fb73e6ee641f9b1adb7a08a3e0b21 cleanup cleanup:copilot 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: copilot × stepfun-ai/step-3.5-flash 94%](https://codingagentbench.com/badge/copilot/stepfun-ai/step-3.5-flash/polyglot/go-json-parser-fix.svg)](https://codingagentbench.com/cell/copilot/stepfun-ai/step-3.5-flash/polyglot/go-json-parser-fix)
HTML / iframe
<a href="https://codingagentbench.com/cell/copilot/stepfun-ai/step-3.5-flash/polyglot/go-json-parser-fix"><img src="https://codingagentbench.com/badge/copilot/stepfun-ai/step-3.5-flash/polyglot/go-json-parser-fix.svg" alt="CodingAgentBench: copilot × stepfun-ai/step-3.5-flash 94%" /></a>
CodingAgentBench: copilot × stepfun-ai/step-3.5-flash 94%