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CodingAgentBench

openhands × stepfun-ai/step-3.5-flash

polyglot
polyglot/go-slice-dedup

Per-axis scores

Pass
1.000
Tokens/correct
—
Wall
147.2s
Blast
0.000
Refusal
—
Integrity
1.000
Composite
0.918

Run identity

cell_id
free-20260527/openhands/stepfun-ai/step-3.5-flash/polyglot/go-slice-dedup
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
2026-06-16T19:05:37.660795Z
ended_at
2026-06-16T19:08:04.870539Z
duration
147.21 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/goslicededup\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":147209.744,"container_active_ms":147202.641,"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":["dedup.go"],"unexpected_changes":[],"expected_changes":["dedup.go"],"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":"polyglot/go-slice-dedup"}
composite composite, weights, components, note {"composite":0.9182911006898696,"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":147209.744,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.4552740045991299,"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 / 147.21 s
span 14b7dd0e312f4cf0a8e3a32433df0341task_setupprepare:polyglot/go-slice-dedup0 ms → 1 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-openhands-polyglot_go-slice-dedup-3me5_x3f/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/go-slice-dedup

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/go-slice-dedup
# 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
14b7dd0e312f4cf0a8e3a32433df0341 task_setup prepare:polyglot/go-slice-dedup 1 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-openhands-polyglot_go-slice-dedup-3me5_x3f/workdir","task_category":"polyglot","plugin_stack":[],"behavior_mode":"factory"}
250128e101b041a181cf81ce7a7f552d ↳ 0a41e6a87e544147b47b78c247181508 tool_call applied_plugins 0 ms {"tui":"openhands","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
7c07de3382aa490ca77f32f4f26038f6 ↳ 0a41e6a87e544147b47b78c247181508 container openhands:run 147203 ms {"image":"codingagentbench/openhands:1.7.0","command":["/app/.venv/bin/python","/opt/openhands_run.py","-t","Dedup a slice preserving first-seen order; current impl mutates input and produces wrong order","--workspace","/workspace"],"deviation":"root+docker.sock; see module docstring","exit_code":0,"timed_out":false,"docker_sock_mounted":true,"read_only":false}
0a41e6a87e544147b47b78c247181508 adapter_run openhands:polyglot/go-slice-dedup 147209 ms {"timeout_s":600,"plugin_stack":[],"exit_code":0}
a675e4d6a36646b383b4e3f4a1851049 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

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Embed this result
README / Markdown
[![CodingAgentBench: openhands × stepfun-ai/step-3.5-flash 92%](https://codingagentbench.com/badge/openhands/stepfun-ai/step-3.5-flash/polyglot/go-slice-dedup.svg)](https://codingagentbench.com/cell/openhands/stepfun-ai/step-3.5-flash/polyglot/go-slice-dedup)
HTML / iframe
<a href="https://codingagentbench.com/cell/openhands/stepfun-ai/step-3.5-flash/polyglot/go-slice-dedup"><img src="https://codingagentbench.com/badge/openhands/stepfun-ai/step-3.5-flash/polyglot/go-slice-dedup.svg" alt="CodingAgentBench: openhands × stepfun-ai/step-3.5-flash 92%" /></a>
CodingAgentBench: openhands × stepfun-ai/step-3.5-flash 92%