plandex × stepfun-ai/step-3.5-flash

mutations

mutations/java-null-deref

Per-axis scores

Pass

1.000

Tokens/correct

—

Wall

552.7s

Blast

0.667

Refusal

—

Integrity

1.000

Composite

0.838

Run identity

cell_id: free-20260527/plandex/stepfun-ai/step-3.5-flash/mutations/java-null-deref
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: 2026-06-16T19:35:22.828917Z
ended_at: 2026-06-16T19:44:35.508469Z
duration: 552.68 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 values win over defaults\nok fallback to defaults\nok missing returns null\nok nullDefaultsReturnsNull\nok values still work with null defaults\nok null values, key in defaults\nok null values, missing key\nok both maps null returns null\nok normal operation: key in values\nok normal operation: key in defaults\nok normal operation: key not found returns null\nall tests passed\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":552679.5519999999,"container_active_ms":552678.128,"model_call_ms":0}`
blast_radius	blast_radius, added, removed, modified, unexpected_changes, expected_changes, total_changes, extra_git_dir	`{"blast_radius":0.6666666666666666,"added":[".plandex-v2/projects-v2.json"],"removed":[],"modified":["src/Config.java","src/Tests.java"],"unexpected_changes":[".plandex-v2/projects-v2.json","src/Tests.java"],"expected_changes":["src/Config.java"],"total_changes":3,"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/java-null-deref"}`
composite	composite, weights, components, note	{"composite":0.8378736088729423,"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":0.6666666666666666,"tokens_per_correct_task":0,"wall_clock_ms":552679.5519999999,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.3636018369307257,"clean_blast":0.33333333333333337,"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

speedt = 0 ms / 552.68 s

span 8e25bc21ec984fd8bc96eaa50ececa55task_setupprepare:mutations/java-null-deref0 ms → 1 ms

workdir/home/andrew/.codingagentbench-scratch/codingagentbench-plandex-mutations_java-null-deref-4iuwfc0i/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/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/java-null-deref

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/java-null-deref
# 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
8e25bc21ec984fd8bc96eaa50ececa55	task_setup	prepare:mutations/java-null-deref	1 ms	`{"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-plandex-mutations_java-null-deref-4iuwfc0i/workdir","task_category":"mutations","plugin_stack":[],"behavior_mode":"factory"}`
bbc82ee4bb4f4e8fa9b2c3be3698610e ↳ 2c38272508944be7aea6a5b8f3518677	tool_call	applied_plugins	0 ms	`{"tui":"plandex","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}`
388a5367183649aaa9f5c78f80ac8dbb ↳ 5686fa5035eb4c5aaa04c3dd4d4cd94e	container	plandex:phase=plan	0 ms	`{"phase":"plan","argv":["plandex","new","--name","codingagentbench-plan",";","plandex","tell","Critical null guard deleted before defaults.get() — NPE on caller-supplied null defaults"],"kind":"plan-first"}`
b373e64a5c764615bc2ef329c549acd9 ↳ 5686fa5035eb4c5aaa04c3dd4d4cd94e	container	plandex:phase=execute	0 ms	`{"phase":"execute","argv":["plandex","build",";","plandex","apply"],"auto_confirm":true}`
5686fa5035eb4c5aaa04c3dd4d4cd94e ↳ 2c38272508944be7aea6a5b8f3518677	container	plandex:pipeline	552678 ms	`{"image":"codingagentbench/plandex:v2.2.1","timeout_s":600,"plan_phase_cmd":["plandex","new","--name","codingagentbench-plan",";","plandex","tell","Critical null guard deleted before defaults.get() — NPE on caller-supplied null defaults"],"exec_phase_cmd":["plandex","build",";","plandex","apply"],"exit_code":0,"duration_s":552.6507303060207,"timed_out":false,"plan_phase_done":true,"execute_phase_done":true}`
2c38272508944be7aea6a5b8f3518677	adapter_run	plandex:mutations/java-null-deref	552679 ms	`{"timeout_s":600,"plugin_stack":[],"exit_code":0}`
e31c0b93f40f42da87e92fc4989e1995	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 84%](https://codingagentbench.com/badge/plandex/stepfun-ai/step-3.5-flash/mutations/java-null-deref.svg)](https://codingagentbench.com/cell/plandex/stepfun-ai/step-3.5-flash/mutations/java-null-deref)

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