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CodingAgentBench

plandex × stepfun-ai/step-3.5-flash

polyglot
polyglot/go-http-handler-fix

Per-axis scores

Pass
0.000
Tokens/correct
—
Wall
85.7s
Blast
1.000
Refusal
—
Integrity
1.000
Composite
0.426

Run identity

cell_id
free-20260527/plandex/stepfun-ai/step-3.5-flash/polyglot/go-http-handler-fix
sweep_id
free-20260527
container_image
codingagentbench/plandex:v2.2.1
image_digest
sha256:d1d67c7f86699ccffd8fd7f6dca598ef449ca37bc377e42f7d1f0ef3cd4aaee2
model_build_id
stepfun-ai/step-3.5-flash
exit_code
0

Timing

started_at
2026-06-16T19:36:06.263950Z
ended_at
2026-06-16T19:37:32.007203Z
duration
85.74 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":1,"timed_out":false,"stdout_tail":"--- FAIL: TestGreet_MissingNameReturns400 (0.00s)\n handler_test.go:34: status: got 200 want 400\n--- FAIL: TestGreet_EmptyNameReturns400 (0.00s)\n handler_test.go:44: status: got 200 want 400\nFAIL\nFAIL\tcodingagentbench/gohttphandler\t0.004s\nFAIL\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":85743.253,"container_active_ms":85741.757,"model_call_ms":0}
blast_radius blast_radius, added, removed, modified, unexpected_changes, expected_changes, total_changes, extra_git_dir {"blast_radius":1,"added":[".plandex-v2/projects-v2.json"],"removed":[],"modified":[],"unexpected_changes":[".plandex-v2/projects-v2.json"],"expected_changes":[],"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-http-handler-fix"}
composite composite, weights, components, note {"composite":0.4257151989889955,"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":1,"tokens_per_correct_task":0,"wall_clock_ms":85743.253,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.5047679932599702,"clean_blast":0,"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 / 85.74 s
span a6cec1366e3546018015219f92331a63task_setupprepare:polyglot/go-http-handler-fix0 ms → 0 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-plandex-polyglot_go-http-handler-fix-8m4oj49m/workdir
task_categorypolyglot
plugin_stack[]
behavior_modefactory

Terminal playback

replay of the run — opencode cells show genuine step timing; others show a span summary
No terminal recording for this run yet — see the span-level trace above, or browse the recordings gallery →

Run it yourself

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

Imagecodingagentbench/plandex:v2.2.1·sha256:sha256:d1d67c7f8…
docker run — exact image used in this run
# pull the exact image used in this run
docker pull codingagentbench/plandex:v2.2.1@sha256:sha256:d1d67c7f86699ccffd8fd7f6dca598ef449ca37bc377e42f7d1f0ef3cd4aaee2

docker run --rm \
  -e CAB_ENDPOINT="$YOUR_ENDPOINT" \
  -e CAB_KEY="$YOUR_KEY" \
  codingagentbench/plandex:v2.2.1@sha256:sha256:d1d67c7f86699ccffd8fd7f6dca598ef449ca37bc377e42f7d1f0ef3cd4aaee2 \
  run-cell \
    --tui plandex \
    --model stepfun-ai/step-3.5-flash \
    --task polyglot/go-http-handler-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 plandex \
  --model stepfun-ai/step-3.5-flash \
  --endpoint "$YOUR_ENDPOINT" \
  --key "$YOUR_KEY" \
  --task polyglot/go-http-handler-fix
# provisional score — not for citation

Provisional score — not for citation. Use the Docker or Harness CLI path for citable results.

Trace spans (7)

Span Kind Name Duration Attrs / Error
a6cec1366e3546018015219f92331a63 task_setup prepare:polyglot/go-http-handler-fix 0 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-plandex-polyglot_go-http-handler-fix-8m4oj49m/workdir","task_category":"polyglot","plugin_stack":[],"behavior_mode":"factory"}
198c8fca0be248a3aa6dc6892a5aabd1 ↳ 47c76fc5b38d41e4a897be533643a90f tool_call applied_plugins 0 ms {"tui":"plandex","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
64f87a6e271946b597d8d9e288ddd91c ↳ 1bb4e417f8fe4548a33f81207d270f07 container plandex:phase=plan 0 ms {"phase":"plan","argv":["plandex","new","--name","codingagentbench-plan",";","plandex","tell","HTTP handler writes body before setting status code, locking the response to 200"],"kind":"plan-first"}
c7a15040936b4408a6294e1a92b3f5d1 ↳ 1bb4e417f8fe4548a33f81207d270f07 container plandex:phase=execute 0 ms {"phase":"execute","argv":["plandex","build",";","plandex","apply"],"auto_confirm":true}
1bb4e417f8fe4548a33f81207d270f07 ↳ 47c76fc5b38d41e4a897be533643a90f container plandex:pipeline 85742 ms {"image":"codingagentbench/plandex:v2.2.1","timeout_s":600,"plan_phase_cmd":["plandex","new","--name","codingagentbench-plan",";","plandex","tell","HTTP handler writes body before setting status code, locking the response to 200"],"exec_phase_cmd":["plandex","build",";","plandex","apply"],"exit_code":0,"duration_s":85.70998069300549,"timed_out":false,"plan_phase_done":true,"execute_phase_done":true}
47c76fc5b38d41e4a897be533643a90f adapter_run plandex:polyglot/go-http-handler-fix 85742 ms {"timeout_s":600,"plugin_stack":[],"exit_code":0}
d6bae9e72e80456689b859d55ff5022e cleanup cleanup:plandex 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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README / Markdown
[![CodingAgentBench: plandex × stepfun-ai/step-3.5-flash 43%](https://codingagentbench.com/badge/plandex/stepfun-ai/step-3.5-flash/polyglot/go-http-handler-fix.svg)](https://codingagentbench.com/cell/plandex/stepfun-ai/step-3.5-flash/polyglot/go-http-handler-fix)
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<a href="https://codingagentbench.com/cell/plandex/stepfun-ai/step-3.5-flash/polyglot/go-http-handler-fix"><img src="https://codingagentbench.com/badge/plandex/stepfun-ai/step-3.5-flash/polyglot/go-http-handler-fix.svg" alt="CodingAgentBench: plandex × stepfun-ai/step-3.5-flash 43%" /></a>
CodingAgentBench: plandex × stepfun-ai/step-3.5-flash 43%