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CodingAgentBench

copilot × stepfun-ai/step-3.5-flash

polyglot
polyglot/rust-owner-borrow-fix

Per-axis scores

Pass
1.000
Tokens/correct
—
Wall
43.2s
Blast
0.000
Refusal
—
Integrity
1.000
Composite
0.937

Run identity

cell_id
expansion-20260616/copilot/stepfun-ai/step-3.5-flash/polyglot/rust-owner-borrow-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
2026-06-17T02:37:24.994197Z
ended_at
2026-06-17T02:38:08.181904Z
duration
43.19 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":"\nrunning 3 tests\ntest tests::basic ... ok\ntest tests::empty_items ... ok\ntest tests::single_item ... ok\n\ntest result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s\n\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":43187.707,"container_active_ms":43172.699,"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":["src/lib.rs"],"unexpected_changes":[],"expected_changes":["src/lib.rs"],"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/rust-owner-borrow-fix"}
composite composite, weights, components, note {"composite":0.9369156453034581,"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":43187.707,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.5794376353563868,"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 / 43.19 s
span 12fa4299e3324c1bb48e36e9ffebb204task_setupprepare:polyglot/rust-owner-borrow-fix0 ms → 14 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-copilot-polyglot_rust-owner-borrow-fix-rm8ejx46/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/rust-owner-borrow-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/rust-owner-borrow-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
12fa4299e3324c1bb48e36e9ffebb204 task_setup prepare:polyglot/rust-owner-borrow-fix 14 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-copilot-polyglot_rust-owner-borrow-fix-rm8ejx46/workdir","task_category":"polyglot","plugin_stack":[],"behavior_mode":"factory"}
5e033e9352574b17b6d1ac21b07e889d ↳ db83cfae853e4abaa947ba60429da971 tool_call applied_plugins 0 ms {"tui":"copilot","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
95e2b19e34ee4ddbaa5681343f368f5d ↳ db83cfae853e4abaa947ba60429da971 container copilot:launch 43172 ms {"image":"codingagentbench/copilot:v1.0.63","argv":["-p","Move-after-use compile error in a string concat helper; convert to borrow + clone where needed","--allow-all"],"timeout_s":600,"exit_code":0,"duration_s":43.157303446001606,"timed_out":false}
db83cfae853e4abaa947ba60429da971 adapter_run copilot:polyglot/rust-owner-borrow-fix 43173 ms {"timeout_s":600,"plugin_stack":[],"exit_code":0}
1630d1628fa24bcb891f1a547e3d489e 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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[![CodingAgentBench: copilot × stepfun-ai/step-3.5-flash 94%](https://codingagentbench.com/badge/copilot/stepfun-ai/step-3.5-flash/polyglot/rust-owner-borrow-fix.svg)](https://codingagentbench.com/cell/copilot/stepfun-ai/step-3.5-flash/polyglot/rust-owner-borrow-fix)
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CodingAgentBench: copilot × stepfun-ai/step-3.5-flash 94%