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CodingAgentBench

codex × stepfun-ai/step-3.5-flash

polyglot
polyglot/go-json-parser-fix

Per-axis scores

Pass
1.000
Tokens/correct
—
Wall
41.0s
Blast
0.000
Refusal
—
Integrity
1.000
Composite
0.938

Run identity

cell_id
expansion-20260616/codex/stepfun-ai/step-3.5-flash/polyglot/go-json-parser-fix
sweep_id
expansion-20260616
container_image
codingagentbench/codex:v0.140.0
image_digest
sha256:52116224fbc698acc448343890c4542efcc101a950ef8c8de1eca3e051f228bc
model_build_id
stepfun-ai/step-3.5-flash
exit_code
0

Timing

started_at
2026-06-17T00:50:40.275606Z
ended_at
2026-06-17T00:51:21.229870Z
duration
40.95 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/gojsonparser\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":40954.264,"container_active_ms":40939.054,"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":["parser.go"],"unexpected_changes":[],"expected_changes":["parser.go"],"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/go-json-parser-fix"}
composite composite, weights, components, note {"composite":0.9378641696710052,"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":40954.264,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.5857611311400341,"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 / 40.95 s
span 68e8ee16c0964a79882abcddaf3b6217task_setupprepare:polyglot/go-json-parser-fix0 ms → 15 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-codex-polyglot_go-json-parser-fix-pj47r5mx/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/codex:v0.140.0·sha256:sha256:52116224f…
docker run — exact image used in this run
# pull the exact image used in this run
docker pull codingagentbench/codex:v0.140.0@sha256:sha256:52116224fbc698acc448343890c4542efcc101a950ef8c8de1eca3e051f228bc

docker run --rm \
  -e CAB_ENDPOINT="$YOUR_ENDPOINT" \
  -e CAB_KEY="$YOUR_KEY" \
  codingagentbench/codex:v0.140.0@sha256:sha256:52116224fbc698acc448343890c4542efcc101a950ef8c8de1eca3e051f228bc \
  run-cell \
    --tui codex \
    --model stepfun-ai/step-3.5-flash \
    --task polyglot/go-json-parser-fix

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 codex \
  --model stepfun-ai/step-3.5-flash \
  --endpoint "$YOUR_ENDPOINT" \
  --key "$YOUR_KEY" \
  --task polyglot/go-json-parser-fix
# 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
68e8ee16c0964a79882abcddaf3b6217 task_setup prepare:polyglot/go-json-parser-fix 15 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-codex-polyglot_go-json-parser-fix-pj47r5mx/workdir","task_category":"polyglot","plugin_stack":[],"behavior_mode":"factory"}
d76e0ed6e06746b596d1177dc23ebb97 ↳ 6bce73b2948d408a80d2ebc1b2fcc369 tool_call applied_plugins 0 ms {"tui":"codex","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
0bcfc5839ecc47708453688595e95798 ↳ 6bce73b2948d408a80d2ebc1b2fcc369 container codex:launch 40939 ms {"image":"codingagentbench/codex:v0.140.0","argv":["exec","--dangerously-bypass-approvals-and-sandbox","--skip-git-repo-check","--ephemeral","--ignore-user-config","-m","stepfun-ai/step-3.5-flash","-c","model_providers.nim={ name = 'nim', base_url = 'http://172.17.0.1:31415/v1', wire_api = 'responses', env_key = 'OPENAI_API_KEY' }","-c","model_provider=\"nim\"","--disable","multi_agent","--disable","browser_use","--disable","browser_use_external","--disable","computer_use","--disable","apps","JSON parser drops zero-valued fields because of `omitempty` on a required field"],"timeout_s":600,"exit_code":0,"duration_s":40.92200366497855,"timed_out":false}
6bce73b2948d408a80d2ebc1b2fcc369 adapter_run codex:polyglot/go-json-parser-fix 40939 ms {"timeout_s":600,"plugin_stack":[],"exit_code":0}
9773d07310bc4d448fc597be2d3a4fff cleanup cleanup:codex 0 ms {}

Model calls (0)

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

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[![CodingAgentBench: codex × stepfun-ai/step-3.5-flash 94%](https://codingagentbench.com/badge/codex/stepfun-ai/step-3.5-flash/polyglot/go-json-parser-fix.svg)](https://codingagentbench.com/cell/codex/stepfun-ai/step-3.5-flash/polyglot/go-json-parser-fix)
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<a href="https://codingagentbench.com/cell/codex/stepfun-ai/step-3.5-flash/polyglot/go-json-parser-fix"><img src="https://codingagentbench.com/badge/codex/stepfun-ai/step-3.5-flash/polyglot/go-json-parser-fix.svg" alt="CodingAgentBench: codex × stepfun-ai/step-3.5-flash 94%" /></a>
CodingAgentBench: codex × stepfun-ai/step-3.5-flash 94%