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CodingAgentBench

opencode × stepfun-ai/step-3.5-flash

polyglot
polyglot/ts-generic-utility

Per-axis scores

Pass
1.000
Tokens/correct
—
Wall
301.3s
Blast
0.833
Refusal
—
Integrity
1.000
Composite
0.827

Run identity

cell_id
free-20260527/opencode/stepfun-ai/step-3.5-flash/polyglot/ts-generic-utility
sweep_id
free-20260527
container_image
codingagentbench/opencode:v1.15.10
image_digest
sha256:e56bdb69fb83ea2f8c81c06257f190fd4b5e91077e83d5536f722ff1b9c70275
model_build_id
stepfun-ai/step-3.5-flash
exit_code
0

Timing

started_at
2026-06-16T17:42:02.431923Z
ended_at
2026-06-16T17:47:03.730891Z
duration
301.30 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":"✔ groups by string key (2.0845ms)\n✔ preserves input order within each bucket (0.320619ms)\n✔ groups by numeric key (0.370274ms)\n✔ empty input (0.325879ms)\nℹ tests 4\nℹ suites 0\nℹ pass 4\nℹ fail 0\nℹ cancelled 0\nℹ skipped 0\nℹ todo 0\nℹ duration_ms 82.049918\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":301298.968,"container_active_ms":301296.284,"model_call_ms":0}
blast_radius blast_radius, added, removed, modified, unexpected_changes, expected_changes, total_changes, extra_git_dir {"blast_radius":0.8333333333333334,"added":["build/src/group_by.js","build/tests/group_by.test.js","package-lock.json"],"removed":[],"modified":["package.json","src/group_by.ts","tsconfig.json"],"unexpected_changes":["build/src/group_by.js","build/tests/group_by.test.js","package-lock.json","package.json","tsconfig.json"],"expected_changes":["src/group_by.ts"],"total_changes":6,"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/ts-generic-utility"}
composite composite, weights, components, note {"composite":0.8268308503696113,"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":0.8333333333333334,"tokens_per_correct_task":0,"wall_clock_ms":301298.968,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.40109455801962984,"clean_blast":0.16666666666666663,"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 / 301.30 s
span e27739613d584eb7bdb967beeeb9502dtask_setupprepare:polyglot/ts-generic-utility0 ms → 1 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-opencode-polyglot_ts-generic-utility-cfv04dq4/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/opencode:v1.15.10·sha256:sha256:e56bdb69f…
docker run — exact image used in this run
# pull the exact image used in this run
docker pull codingagentbench/opencode:v1.15.10@sha256:sha256:e56bdb69fb83ea2f8c81c06257f190fd4b5e91077e83d5536f722ff1b9c70275

docker run --rm \
  -e CAB_ENDPOINT="$YOUR_ENDPOINT" \
  -e CAB_KEY="$YOUR_KEY" \
  codingagentbench/opencode:v1.15.10@sha256:sha256:e56bdb69fb83ea2f8c81c06257f190fd4b5e91077e83d5536f722ff1b9c70275 \
  run-cell \
    --tui opencode \
    --model stepfun-ai/step-3.5-flash \
    --task polyglot/ts-generic-utility

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.

opencode — BYO endpoint wiring
# Write .opencode/config.json in the task workdir:
# {
#   "providers": {
#     "codingagentbench": {
#       "type": "openai",
#       "options": {
#         "baseURL": "$YOUR_ENDPOINT",
#         "apiKey": "$YOUR_KEY"
#       },
#       "models": [{ "id": "$YOUR_MODEL_ID", "name": "$YOUR_MODEL_ID" }]
#     }
#   }
# }

opencode run \
  --format json \
  --dangerously-skip-permissions \
  -m codingagentbench/$YOUR_MODEL_ID

# 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 opencode \
  --model stepfun-ai/step-3.5-flash \
  --endpoint "$YOUR_ENDPOINT" \
  --key "$YOUR_KEY" \
  --task polyglot/ts-generic-utility
# 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
e27739613d584eb7bdb967beeeb9502d task_setup prepare:polyglot/ts-generic-utility 1 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-opencode-polyglot_ts-generic-utility-cfv04dq4/workdir","task_category":"polyglot","plugin_stack":[],"behavior_mode":"factory"}
959f8f18927b4efa9ed84fce697dea53 ↳ 858e0c6129b2416a938b258273369da9 tool_call applied_plugins 0 ms {"tui":"opencode","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
fae15c87baf246dfb62f480a0e8349eb ↳ 858e0c6129b2416a938b258273369da9 container opencode-run:polyglot/ts-generic-utility 301296 ms {"image":"codingagentbench/opencode:v1.15.10","model":"stepfun-ai/step-3.5-flash","base_url":"http://172.17.0.1:31415/v1","exit_code":0,"duration_s":265.203,"timed_out":false,"image_digest":"sha256:e56bdb69fb83ea2f8c81c06257f190fd4b5e91077e83d5536f722ff1b9c70275"}
858e0c6129b2416a938b258273369da9 adapter_run opencode:polyglot/ts-generic-utility 301297 ms {"timeout_s":600,"plugin_stack":[],"exit_code":0}
b484b35d097e40f1b1a9070190c85ae7 cleanup cleanup:opencode 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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README / Markdown
[![CodingAgentBench: opencode × stepfun-ai/step-3.5-flash 83%](https://codingagentbench.com/badge/opencode/stepfun-ai/step-3.5-flash/polyglot/ts-generic-utility.svg)](https://codingagentbench.com/cell/opencode/stepfun-ai/step-3.5-flash/polyglot/ts-generic-utility)
HTML / iframe
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CodingAgentBench: opencode × stepfun-ai/step-3.5-flash 83%