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CodingAgentBench

qwen-code × stepfun-ai/step-3.5-flash

mutations
mutations/go-binary-search-offbyone

Per-axis scores

Pass
1.000
Tokens/correct
—
Wall
20.5s
Blast
0.000
Refusal
—
Integrity
1.000
Composite
0.951

Run identity

cell_id
free-20260527/qwen-code/stepfun-ai/step-3.5-flash/mutations/go-binary-search-offbyone
sweep_id
free-20260527
container_image
codingagentbench/qwen-code:v0.16.1
image_digest
sha256:597f01dba22092cfdcfc7a593f2c5a658a9e647bae60709f04aaba33622c961d
model_build_id
stepfun-ai/step-3.5-flash
exit_code
0

Timing

started_at
2026-06-16T20:42:14.694784Z
ended_at
2026-06-16T20:42:35.194647Z
duration
20.50 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/gobinarysearch\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":20499.863,"container_active_ms":20399.867000000002,"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":["search.go"],"unexpected_changes":[],"expected_changes":["search.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":"mutations/go-binary-search-offbyone"}
composite composite, weights, components, note {"composite":0.9510578814093732,"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":20499.863,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.6737192093958204,"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 / 20.50 s
span b18977006ad943d7bca487d534f427dbtask_setupprepare:mutations/go-binary-search-offbyone0 ms → 100 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-qwen-code-mutations_go-binary-search-offbyone-kjc6oulw/workdir
task_categorymutations
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/qwen-code:v0.16.1·sha256:sha256:597f01dba…
docker run — exact image used in this run
# pull the exact image used in this run
docker pull codingagentbench/qwen-code:v0.16.1@sha256:sha256:597f01dba22092cfdcfc7a593f2c5a658a9e647bae60709f04aaba33622c961d

docker run --rm \
  -e CAB_ENDPOINT="$YOUR_ENDPOINT" \
  -e CAB_KEY="$YOUR_KEY" \
  codingagentbench/qwen-code:v0.16.1@sha256:sha256:597f01dba22092cfdcfc7a593f2c5a658a9e647bae60709f04aaba33622c961d \
  run-cell \
    --tui qwen-code \
    --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 qwen-code \
  --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 (5)

Span Kind Name Duration Attrs / Error
b18977006ad943d7bca487d534f427db task_setup prepare:mutations/go-binary-search-offbyone 100 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-qwen-code-mutations_go-binary-search-offbyone-kjc6oulw/workdir","task_category":"mutations","plugin_stack":[],"behavior_mode":"factory"}
fb831a1a6f9945199a3f7539bf7e2cad ↳ ce24f2deb2e94fe4bb491c6426cea081 tool_call applied_plugins 0 ms {"tui":"qwen-code","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
346d6aa0f18d4f2fa9a30bab46894c11 ↳ ce24f2deb2e94fe4bb491c6426cea081 container qwen-code:run 20400 ms {"image":"codingagentbench/qwen-code:v0.16.1","command":["-p","Off-by-one in iterative binary search: `<=` flipped to `<` skips rightmost elements","--yolo"],"model":"stepfun-ai/step-3.5-flash","exit_code":0,"timed_out":false}
ce24f2deb2e94fe4bb491c6426cea081 adapter_run qwen-code:mutations/go-binary-search-offbyone 20400 ms {"timeout_s":600,"plugin_stack":[],"exit_code":0}
6181a3f4692c4b8a9478b32d3838cbdb cleanup cleanup:qwen-code 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: qwen-code × stepfun-ai/step-3.5-flash 95%