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CodingAgentBench

plandex × stepfun-ai/step-3.5-flash

polyglot
polyglot/rust-error-handling

Per-axis scores

Pass
0.000
Tokens/correct
Wall
79.0s
Blast
1.000
Refusal
Integrity
1.000
Composite
0.427

Run identity

cell_id
free-20260527/plandex/stepfun-ai/step-3.5-flash/polyglot/rust-error-handling
sweep_id
free-20260527
container_image
codingagentbench/plandex:v2.2.1
image_digest
sha256:d1d67c7f86699ccffd8fd7f6dca598ef449ca37bc377e42f7d1f0ef3cd4aaee2
model_build_id
stepfun-ai/step-3.5-flash
exit_code
0

Timing

started_at
2026-06-16T19:37:50.972689Z
ended_at
2026-06-16T19:39:09.950733Z
duration
78.98 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":101,"timed_out":false,"stdout_tail":"\nrunning 5 tests\ntest tests::bad_input_does_not_panic ... FAILED\ntest tests::bad_input_reports_index_and_value ... FAILED\ntest tests::happy_path ... ok\ntest tests::empty ... ok\ntest tests::negative_numbers ... ok\n\nfailures:\n\n---- tests::bad_input_does_not_panic stdout ----\n\nthread 'tests::bad_input_does_not_panic' (126699) panicked at src/lib.rs:12:32:\ncalled `Result::unwrap()` on an `Err` value: ParseIntError { kind: InvalidDigit }\nnote: run with `RUST_BACKTRACE=1` environment variable to display a backtrace\n\n---- tests::bad_input_reports_index_and_value stdout ----\n\nthread 'tests::bad_input_reports_index_and_value' (126700) panicked at src/lib.rs:12:32:\ncalled `Result::unwrap()` on an `Err` value: ParseIntError { kind: InvalidDigit }\n\n\nfailures:\n tests::bad_input_does_not_panic\n tests::bad_input_reports_index_and_value\n\ntest result: FAILED. 3 passed; 2 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":0}
latency wall_clock_ms, container_active_ms, model_call_ms {"wall_clock_ms":78978.044,"container_active_ms":78977.26999999999,"model_call_ms":0}
blast_radius blast_radius, added, removed, modified, unexpected_changes, expected_changes, total_changes, extra_git_dir {"blast_radius":1,"added":[".plandex-v2/projects-v2.json"],"removed":[],"modified":[],"unexpected_changes":[".plandex-v2/projects-v2.json"],"expected_changes":[],"total_changes":1,"extra_git_dir":false}
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-error-handling"}
composite composite, weights, components, note {"composite":0.42695137709652514,"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":1,"tokens_per_correct_task":0,"wall_clock_ms":78978.044,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.5130091806435012,"clean_blast":0,"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 / 78.98 s
span 86fc24b110d54ff58a13284f64e588aetask_setupprepare:polyglot/rust-error-handling0 ms1 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-plandex-polyglot_rust-error-handling-vbdg3s5x/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/plandex:v2.2.1·sha256:sha256:d1d67c7f8…
docker run — exact image used in this run
# pull the exact image used in this run
docker pull codingagentbench/plandex:v2.2.1@sha256:sha256:d1d67c7f86699ccffd8fd7f6dca598ef449ca37bc377e42f7d1f0ef3cd4aaee2

docker run --rm \
  -e CAB_ENDPOINT="$YOUR_ENDPOINT" \
  -e CAB_KEY="$YOUR_KEY" \
  codingagentbench/plandex:v2.2.1@sha256:sha256:d1d67c7f86699ccffd8fd7f6dca598ef449ca37bc377e42f7d1f0ef3cd4aaee2 \
  run-cell \
    --tui plandex \
    --model stepfun-ai/step-3.5-flash \
    --task polyglot/rust-error-handling

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 plandex \
  --model stepfun-ai/step-3.5-flash \
  --endpoint "$YOUR_ENDPOINT" \
  --key "$YOUR_KEY" \
  --task polyglot/rust-error-handling
# provisional score — not for citation

Provisional score — not for citation. Use the Docker or Harness CLI path for citable results.

Trace spans (7)

Span Kind Name Duration Attrs / Error
86fc24b110d54ff58a13284f64e588ae task_setup prepare:polyglot/rust-error-handling 1 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-plandex-polyglot_rust-error-handling-vbdg3s5x/workdir","task_category":"polyglot","plugin_stack":[],"behavior_mode":"factory"}
1d2412340226467683e8303f545e1e58 ↳ 092b7586900d4c598806cad93caede4f tool_call applied_plugins 0 ms {"tui":"plandex","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
1747effe0f244726b883406f23218015 ↳ 2ce61b78662941c689fc60abd6f793da container plandex:phase=plan 0 ms {"phase":"plan","argv":["plandex","new","--name","codingagentbench-plan",";","plandex","tell","Function uses unwrap on user input; replace with proper Result propagation"],"kind":"plan-first"}
f780022ec2ad4fc1a9fb70a82b6295c2 ↳ 2ce61b78662941c689fc60abd6f793da container plandex:phase=execute 0 ms {"phase":"execute","argv":["plandex","build",";","plandex","apply"],"auto_confirm":true}
2ce61b78662941c689fc60abd6f793da ↳ 092b7586900d4c598806cad93caede4f container plandex:pipeline 78977 ms {"image":"codingagentbench/plandex:v2.2.1","timeout_s":600,"plan_phase_cmd":["plandex","new","--name","codingagentbench-plan",";","plandex","tell","Function uses unwrap on user input; replace with proper Result propagation"],"exec_phase_cmd":["plandex","build",";","plandex","apply"],"exit_code":0,"duration_s":78.955194632028,"timed_out":false,"plan_phase_done":true,"execute_phase_done":true}
092b7586900d4c598806cad93caede4f adapter_run plandex:polyglot/rust-error-handling 78977 ms {"timeout_s":600,"plugin_stack":[],"exit_code":0}
f891f394a1714863a14d836eed24236e cleanup cleanup:plandex 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: plandex × stepfun-ai/step-3.5-flash 43%