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CodingAgentBench

plandex × stepfun-ai/step-3.5-flash

mutations
mutations/go-binary-search-offbyone

Per-axis scores

Pass
0.000
Tokens/correct
—
Wall
91.1s
Blast
1.000
Refusal
—
Integrity
1.000
Composite
0.425

Run identity

cell_id
free-20260527/plandex/stepfun-ai/step-3.5-flash/mutations/go-binary-search-offbyone
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
2026-06-16T19:35:18.138995Z
ended_at
2026-06-16T19:36:49.258856Z
duration
91.12 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":1,"timed_out":false,"stdout_tail":"--- FAIL: TestSearch_RightmostElement (0.00s)\n search_test.go:19: got -1 want 4\n--- FAIL: TestSearch_Single (0.00s)\n search_test.go:31: got -1 want 0\nFAIL\nFAIL\tcodingagentbench/gobinarysearch\t0.003s\nFAIL\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":91119.861,"container_active_ms":91119.13399999999,"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":"mutations/go-binary-search-offbyone"}
composite composite, weights, components, note {"composite":0.424819070132088,"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":91119.861,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.49879380088058656,"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 / 91.12 s
span aebc0ce1d6bf4d8f8e38c2460616b1abadapter_runplandex:mutations/go-binary-search-offbyone0 ms → 91.12 s
timeout_s600
plugin_stack[]
exit_code0

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 mutations/go-binary-search-offbyone

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 mutations/go-binary-search-offbyone
# 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
202a11f5deae48be9c125295991a6c10 task_setup prepare:mutations/go-binary-search-offbyone 0 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-plandex-mutations_go-binary-search-offbyone-zjk0iwnb/workdir","task_category":"mutations","plugin_stack":[],"behavior_mode":"factory"}
fe8e4601c9ad4c81a8cbb5c4093e3e99 ↳ aebc0ce1d6bf4d8f8e38c2460616b1ab tool_call applied_plugins 0 ms {"tui":"plandex","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
5a6e1088f1e548579e8c36ec726a5443 ↳ 975572b6a414410286fdcd474e36022e container plandex:phase=plan 0 ms {"phase":"plan","argv":["plandex","new","--name","codingagentbench-plan",";","plandex","tell","Off-by-one in iterative binary search: `<=` flipped to `<` skips rightmost elements"],"kind":"plan-first"}
9859c1424304438fb50a1927869f68ef ↳ 975572b6a414410286fdcd474e36022e container plandex:phase=execute 0 ms {"phase":"execute","argv":["plandex","build",";","plandex","apply"],"auto_confirm":true}
975572b6a414410286fdcd474e36022e ↳ aebc0ce1d6bf4d8f8e38c2460616b1ab container plandex:pipeline 91119 ms {"image":"codingagentbench/plandex:v2.2.1","timeout_s":600,"plan_phase_cmd":["plandex","new","--name","codingagentbench-plan",";","plandex","tell","Off-by-one in iterative binary search: `<=` flipped to `<` skips rightmost elements"],"exec_phase_cmd":["plandex","build",";","plandex","apply"],"exit_code":0,"duration_s":91.05670837798971,"timed_out":false,"plan_phase_done":true,"execute_phase_done":true}
aebc0ce1d6bf4d8f8e38c2460616b1ab adapter_run plandex:mutations/go-binary-search-offbyone 91119 ms {"timeout_s":600,"plugin_stack":[],"exit_code":0}
37cc853144c9412fbd4d1bf2144138b9 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 42%