Skip to main content
CodingAgentBench

opencode × stepfun-ai/step-3.5-flash

polyglot
polyglot/ts-type-narrowing

Per-axis scores

Pass
0.000
Tokens/correct
—
Wall
291.4s
Blast
0.800
Refusal
—
Integrity
1.000
Composite
0.431

Run identity

cell_id
free-20260527/opencode/stepfun-ai/step-3.5-flash/polyglot/ts-type-narrowing
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
2026-06-16T17:42:06.334131Z
ended_at
2026-06-16T17:46:57.696863Z
duration
291.36 s
tokens
not recorded

Scorer breakdown

Axis Keys Values
pass_rate pass, exit_code, timed_out, stdout_tail, stderr_tail, partial_score {"pass":0,"exit_code":2,"timed_out":false,"stdout_tail":"tsconfig.json(5,25): error TS5107: Option 'moduleResolution=node10' is deprecated and will stop functioning in TypeScript 7.0. Specify compilerOption '\"ignoreDeprecations\": \"6.0\"' to silence this error.\n Visit https://aka.ms/ts6 for migration information.\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":0}
latency wall_clock_ms, container_active_ms, model_call_ms {"wall_clock_ms":291362.732,"container_active_ms":291360.245,"model_call_ms":0}
blast_radius blast_radius, added, removed, modified, unexpected_changes, expected_changes, total_changes, extra_git_dir {"blast_radius":0.8,"added":["build/src/shape.js","build/tests/shape.test.js","package-lock.json"],"removed":[],"modified":["package.json","src/shape.ts"],"unexpected_changes":["build/src/shape.js","build/tests/shape.test.js","package-lock.json","package.json"],"expected_changes":["src/shape.ts"],"total_changes":5,"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-type-narrowing"}
composite composite, weights, components, note {"composite":0.43050608391481227,"weights":{"pass_rate":0.4,"integrity":0.2,"cost":0.15,"latency":0.15,"blast_radius":0.1},"components":{"pass_rate":0,"integrity":1,"blast_radius":0.8,"tokens_per_correct_task":0,"wall_clock_ms":291362.732,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.4033738927654153,"clean_blast":0.19999999999999996,"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 / 291.36 s
span 061ff11abd4f45f4ac6deb667ee521cetask_setupprepare:polyglot/ts-type-narrowing0 ms → 1 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-opencode-polyglot_ts-type-narrowing-xo41fryj/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-type-narrowing

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-type-narrowing
# 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
061ff11abd4f45f4ac6deb667ee521ce task_setup prepare:polyglot/ts-type-narrowing 1 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-opencode-polyglot_ts-type-narrowing-xo41fryj/workdir","task_category":"polyglot","plugin_stack":[],"behavior_mode":"factory"}
915e3ac597ca487fb44e8403c892ff24 ↳ 02e34eb7bbb049319946915e4a5a36ad tool_call applied_plugins 0 ms {"tui":"opencode","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
a819fb445ed8437eab56e317b704f0c6 ↳ 02e34eb7bbb049319946915e4a5a36ad container opencode-run:polyglot/ts-type-narrowing 291360 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":256.211,"timed_out":false,"image_digest":"sha256:e56bdb69fb83ea2f8c81c06257f190fd4b5e91077e83d5536f722ff1b9c70275"}
02e34eb7bbb049319946915e4a5a36ad adapter_run opencode:polyglot/ts-type-narrowing 291361 ms {"timeout_s":600,"plugin_stack":[],"exit_code":0}
9e85b024fa954e74ada2d9a5c4660a18 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

Other tasks in this category

Embed this result
README / Markdown
[![CodingAgentBench: opencode × stepfun-ai/step-3.5-flash 43%](https://codingagentbench.com/badge/opencode/stepfun-ai/step-3.5-flash/polyglot/ts-type-narrowing.svg)](https://codingagentbench.com/cell/opencode/stepfun-ai/step-3.5-flash/polyglot/ts-type-narrowing)
HTML / iframe
<a href="https://codingagentbench.com/cell/opencode/stepfun-ai/step-3.5-flash/polyglot/ts-type-narrowing"><img src="https://codingagentbench.com/badge/opencode/stepfun-ai/step-3.5-flash/polyglot/ts-type-narrowing.svg" alt="CodingAgentBench: opencode × stepfun-ai/step-3.5-flash 43%" /></a>
CodingAgentBench: opencode × stepfun-ai/step-3.5-flash 43%