Skip to main content
CodingAgentBench

openhands × stepfun-ai/step-3.5-flash

polyglot
polyglot/java-null-safety

Per-axis scores

Pass
1.000
Tokens/correct
—
Wall
211.6s
Blast
0.750
Refusal
—
Integrity
1.000
Composite
0.839

Run identity

cell_id
free-20260527/openhands/stepfun-ai/step-3.5-flash/polyglot/java-null-safety
sweep_id
free-20260527
container_image
codingagentbench/openhands:1.7.0
image_digest
sha256:7fcaf222644a5cb0afffe018f038d270130b5af3b8af366cd960f2d596a4342c
model_build_id
stepfun-ai/step-3.5-flash
exit_code
0

Timing

started_at
2026-06-16T19:05:37.661804Z
ended_at
2026-06-16T19:09:09.246478Z
duration
211.59 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":211584.674,"container_active_ms":211577.712,"model_call_ms":0}
blast_radius blast_radius, added, removed, modified, unexpected_changes, expected_changes, total_changes, extra_git_dir {"blast_radius":0.75,"added":["src/Tests.class","src/User.class","src/UserGreeter.class"],"removed":[],"modified":["src/UserGreeter.java"],"unexpected_changes":["src/Tests.class","src/User.class","src/UserGreeter.class"],"expected_changes":["src/UserGreeter.java"],"total_changes":4,"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/java-null-safety"}
composite composite, weights, components, note {"composite":0.8389511660320488,"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":0.75,"tokens_per_correct_task":0,"wall_clock_ms":211584.674,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.42634110688032456,"clean_blast":0.25,"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 / 211.59 s
span 74168e9ca58d4ce19f24f6cc7bd58992task_setupprepare:polyglot/java-null-safety0 ms → 1 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-openhands-polyglot_java-null-safety-y53sys7h/workdir
task_categorypolyglot
plugin_stack[]
behavior_modefactory

Terminal playback

replay of the run — opencode cells show genuine step timing; others show a span summary

Run it yourself

Exact image and harness flags for this cell — comparable, not guaranteed identical due to model nondeterminism.

Imagecodingagentbench/openhands:1.7.0·sha256:sha256:7fcaf2226…
docker run — exact image used in this run
# pull the exact image used in this run
docker pull codingagentbench/openhands:1.7.0@sha256:sha256:7fcaf222644a5cb0afffe018f038d270130b5af3b8af366cd960f2d596a4342c

docker run --rm \
  -e CAB_ENDPOINT="$YOUR_ENDPOINT" \
  -e CAB_KEY="$YOUR_KEY" \
  codingagentbench/openhands:1.7.0@sha256:sha256:7fcaf222644a5cb0afffe018f038d270130b5af3b8af366cd960f2d596a4342c \
  run-cell \
    --tui openhands \
    --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 openhands \
  --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
74168e9ca58d4ce19f24f6cc7bd58992 task_setup prepare:polyglot/java-null-safety 1 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-openhands-polyglot_java-null-safety-y53sys7h/workdir","task_category":"polyglot","plugin_stack":[],"behavior_mode":"factory"}
2a0eeee90d4c41c2bbbbfa40fe28156b ↳ 87f568dbda86409284bd533cff8067de tool_call applied_plugins 0 ms {"tui":"openhands","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
f3b351b6550b4522bb0f5b435f6fdbcf ↳ 87f568dbda86409284bd533cff8067de container openhands:run 211578 ms {"image":"codingagentbench/openhands:1.7.0","command":["/app/.venv/bin/python","/opt/openhands_run.py","-t","User class lookup crashes on null fields; rewrite to return empty string instead of NPE","--workspace","/workspace"],"deviation":"root+docker.sock; see module docstring","exit_code":0,"timed_out":false,"docker_sock_mounted":true,"read_only":false}
87f568dbda86409284bd533cff8067de adapter_run openhands:polyglot/java-null-safety 211584 ms {"timeout_s":600,"plugin_stack":[],"exit_code":0}
92294ba2685f4735bc88a14f9c6235d1 cleanup cleanup:openhands 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: openhands × stepfun-ai/step-3.5-flash 84%](https://codingagentbench.com/badge/openhands/stepfun-ai/step-3.5-flash/polyglot/java-null-safety.svg)](https://codingagentbench.com/cell/openhands/stepfun-ai/step-3.5-flash/polyglot/java-null-safety)
HTML / iframe
<a href="https://codingagentbench.com/cell/openhands/stepfun-ai/step-3.5-flash/polyglot/java-null-safety"><img src="https://codingagentbench.com/badge/openhands/stepfun-ai/step-3.5-flash/polyglot/java-null-safety.svg" alt="CodingAgentBench: openhands × stepfun-ai/step-3.5-flash 84%" /></a>
CodingAgentBench: openhands × stepfun-ai/step-3.5-flash 84%