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CodingAgentBench

aider × stepfun-ai/step-3.5-flash

polyglot
polyglot/go-slice-dedup

Per-axis scores

Pass
1.000
Tokens/correct
—
Wall
85.1s
Blast
0.857
Refusal
—
Integrity
1.000
Composite
0.840

Run identity

cell_id
free-20260527/aider/stepfun-ai/step-3.5-flash/polyglot/go-slice-dedup#run1
sweep_id
free-20260527
container_image
codingagentbench/aider:v0.86.0
image_digest
sha256:f2cd27890475900f9cb617b1c7a6328989a48e8168e7280ac2247a5d2d26d8a1
model_build_id
stepfun-ai/step-3.5-flash
exit_code
0

Timing

started_at
2026-05-29T13:24:08.989095Z
ended_at
2026-05-29T13:25:34.053003Z
duration
85.06 s
prompt_tokens
1,400
completion_tokens
451
tokens source
TUI stdout

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":85063.908,"container_active_ms":85044.465,"model_call_ms":0}
blast_radius blast_radius, added, removed, modified, unexpected_changes, expected_changes, total_changes, extra_git_dir {"blast_radius":0.8571428571428571,"added":[".aider.chat.history.md",".aider.input.history",".aider.tags.cache.v4/cache.db",".aider/analytics.json",".aider/caches/model_prices_and_context_window.json",".aider/installs.json"],"removed":[],"modified":["dedup.go"],"unexpected_changes":[".aider.chat.history.md",".aider.input.history",".aider.tags.cache.v4/cache.db",".aider/analytics.json",".aider/caches/model_prices_and_context_window.json",".aider/installs.json"],"expected_changes":["dedup.go"],"total_changes":7,"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-slice-dedup"}
composite composite, weights, components, note {"composite":0.8401192896935032,"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":0.8571428571428571,"tokens_per_correct_task":0,"wall_clock_ms":85063.908,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.5055571693852595,"clean_blast":0.1428571428571429,"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 / 85.06 s
span ba2eee3dcfbd432abfc8d78865be41b7task_setupprepare:polyglot/go-slice-dedup0 ms → 19 ms
workdir/tmp/codingagentbench-scratch/codingagentbench-aider-polyglot_go-slice-dedup-dy68y7lf/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/aider:v0.86.0·sha256:sha256:f2cd27890…
docker run — exact image used in this run
# pull the exact image used in this run
docker pull codingagentbench/aider:v0.86.0@sha256:sha256:f2cd27890475900f9cb617b1c7a6328989a48e8168e7280ac2247a5d2d26d8a1

docker run --rm \
  -e CAB_ENDPOINT="$YOUR_ENDPOINT" \
  -e CAB_KEY="$YOUR_KEY" \
  codingagentbench/aider:v0.86.0@sha256:sha256:f2cd27890475900f9cb617b1c7a6328989a48e8168e7280ac2247a5d2d26d8a1 \
  run-cell \
    --tui aider \
    --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 aider \
  --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 (6)

Span Kind Name Duration Attrs / Error
ba2eee3dcfbd432abfc8d78865be41b7 task_setup prepare:polyglot/go-slice-dedup 19 ms {"workdir":"/tmp/codingagentbench-scratch/codingagentbench-aider-polyglot_go-slice-dedup-dy68y7lf/workdir","task_category":"polyglot","plugin_stack":[],"behavior_mode":"factory"}
0b205cd1918a4d828d42a87f7bc20b1d ↳ 03c666eb277c49d6b06c6b6a0e749d22 task_setup aider:git-init-marker 0 ms {"workdir":"/tmp/codingagentbench-scratch/codingagentbench-aider-polyglot_go-slice-dedup-dy68y7lf/workdir","git_dir_exists":true}
840077bb2db1492195b279c51bab436b ↳ 03c666eb277c49d6b06c6b6a0e749d22 tool_call applied_plugins 0 ms {"tui":"aider","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
f5ec142806c94a838bc9c4b0eac8d1ec ↳ 03c666eb277c49d6b06c6b6a0e749d22 container aider:launch 85044 ms {"image":"codingagentbench/aider:v0.86.0","argv":["--yes-always","--no-stream","--no-check-update","--no-analytics","--no-show-model-warnings","--no-suggest-shell-commands","--no-auto-commits","--no-pretty","--openai-api-base","http://172.17.0.1:31415/v1","--openai-api-key","sk-ijYE3GGIl2pTqBtwcCcuaIsZzYIIFrIWLMG3qmOK","--model","openai/stepfun-ai/step-3.5-flash","--subtree-only","--message","Dedup a slice preserving first-seen order; current impl mutates input and produces wrong order"],"timeout_s":600,"exit_code":0,"duration_s":85.02688064099493,"timed_out":false}
03c666eb277c49d6b06c6b6a0e749d22 adapter_run aider:polyglot/go-slice-dedup 85044 ms {"timeout_s":600,"plugin_stack":[],"exit_code":0}
2fa6d4a839d74bd9a7fcfdac077ce556 cleanup cleanup:aider 1 ms {}

Model calls (0)

# Timestamp Request hash Prompt Completion Latency Finish
Per-call records not captured for this run. TUI-reported session totals: 1,400 prompt + 451 completion tokens.

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CodingAgentBench: aider × stepfun-ai/step-3.5-flash 84%