Skip to main content
CodingAgentBench

pi × stepfun-ai/step-3.5-flash

polyglot
polyglot/java-null-safety

Per-axis scores

Pass
1.000
Tokens/correct
—
Wall
31.8s
Blast
0.000
Refusal
—
Integrity
1.000
Composite
0.943

Run identity

cell_id
expansion-20260616/pi/stepfun-ai/step-3.5-flash/polyglot/java-null-safety
sweep_id
expansion-20260616
container_image
codingagentbench/pi:v0.73.1
image_digest
sha256:272792a5fb41b2290cf7f75c094471fc9bc9933cefdb77c68c5122bbfa2044e6
model_build_id
stepfun-ai/step-3.5-flash
exit_code
0

Timing

started_at
2026-06-17T03:23:44.140164Z
ended_at
2026-06-17T03:24:15.982478Z
duration
31.84 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 normal\nok null user\nok null title\nok null name\nok both 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":31842.314,"container_active_ms":31829.352,"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/UserGreeter.java"],"unexpected_changes":[],"expected_changes":["src/UserGreeter.java"],"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/java-null-safety"}
composite composite, weights, components, note {"composite":0.942500338108158,"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":31842.314,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.6166689207210528,"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 / 31.84 s
span 6ef0d241575240a4a6de55772f0d0acctask_setupprepare:polyglot/java-null-safety0 ms → 12 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-pi-polyglot_java-null-safety-go1td310/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/pi:v0.73.1·sha256:sha256:272792a5f…
docker run — exact image used in this run
# pull the exact image used in this run
docker pull codingagentbench/pi:v0.73.1@sha256:sha256:272792a5fb41b2290cf7f75c094471fc9bc9933cefdb77c68c5122bbfa2044e6

docker run --rm \
  -e CAB_ENDPOINT="$YOUR_ENDPOINT" \
  -e CAB_KEY="$YOUR_KEY" \
  codingagentbench/pi:v0.73.1@sha256:sha256:272792a5fb41b2290cf7f75c094471fc9bc9933cefdb77c68c5122bbfa2044e6 \
  run-cell \
    --tui pi \
    --model stepfun-ai/step-3.5-flash \
    --task polyglot/java-null-safety

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 pi \
  --model stepfun-ai/step-3.5-flash \
  --endpoint "$YOUR_ENDPOINT" \
  --key "$YOUR_KEY" \
  --task polyglot/java-null-safety
# 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
6ef0d241575240a4a6de55772f0d0acc task_setup prepare:polyglot/java-null-safety 12 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-pi-polyglot_java-null-safety-go1td310/workdir","task_category":"polyglot","plugin_stack":[],"behavior_mode":"factory"}
6ce1855b35284dba88c3dc90890d6194 ↳ 6fb98e3b350f48cca6ace58c25c05c95 tool_call applied_plugins 0 ms {"tui":"pi","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
beefef9141604fcbb3de864926fc8c24 ↳ 6fb98e3b350f48cca6ace58c25c05c95 container pi:launch 31829 ms {"image":"codingagentbench/pi:v0.73.1","argv":["--print","--no-session","--offline","--provider","nim","--model","stepfun-ai/step-3.5-flash","--api-key","sk-ijYE3GGIl2pTqBtwcCcuaIsZzYIIFrIWLMG3qmOK","User class lookup crashes on null fields; rewrite to return empty string instead of NPE"],"timeout_s":600,"exit_code":0,"duration_s":31.81502910499694,"timed_out":false}
6fb98e3b350f48cca6ace58c25c05c95 adapter_run pi:polyglot/java-null-safety 31830 ms {"timeout_s":600,"plugin_stack":[],"exit_code":0}
c4fdd98371e6487abf804b4d3a7c2681 cleanup cleanup:pi 0 ms {}

Model calls (0)

# Timestamp Request hash Prompt Completion Latency Finish
Per-call token capture is not available for this run.

Other CLIs on this task

Other models with this CLI

Other tasks in this category

Embed this result
README / Markdown
[![CodingAgentBench: pi × stepfun-ai/step-3.5-flash 94%](https://codingagentbench.com/badge/pi/stepfun-ai/step-3.5-flash/polyglot/java-null-safety.svg)](https://codingagentbench.com/cell/pi/stepfun-ai/step-3.5-flash/polyglot/java-null-safety)
HTML / iframe
<a href="https://codingagentbench.com/cell/pi/stepfun-ai/step-3.5-flash/polyglot/java-null-safety"><img src="https://codingagentbench.com/badge/pi/stepfun-ai/step-3.5-flash/polyglot/java-null-safety.svg" alt="CodingAgentBench: pi × stepfun-ai/step-3.5-flash 94%" /></a>
CodingAgentBench: pi × stepfun-ai/step-3.5-flash 94%