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CodingAgentBench

aider × meta/llama-4-maverick-17b-128e-instruct

polyglot
polyglot/java-null-safety

Per-axis scores

Pass
1.000
Tokens/correct
—
Wall
26.1s
Blast
0.875
Refusal
—
Integrity
1.000
Composite
0.859

Run identity

cell_id
expansion-20260616/aider/meta/llama-4-maverick-17b-128e-instruct/polyglot/java-null-safety
sweep_id
expansion-20260616
container_image
codingagentbench/aider:v0.86.0
image_digest
sha256:f2cd27890475900f9cb617b1c7a6328989a48e8168e7280ac2247a5d2d26d8a1
model_build_id
meta/llama-4-maverick-17b-128e-instruct
exit_code
0

Timing

started_at
2026-06-17T04:15:01.687678Z
ended_at
2026-06-17T04:15:27.803965Z
duration
26.12 s
prompt_tokens
1,800
completion_tokens
736
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 normal\nok null user\nok null title\nok null name\nok both null\nall tests passed\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":26116.287,"container_active_ms":26102.69,"model_call_ms":0}
blast_radius blast_radius, added, removed, modified, unexpected_changes, expected_changes, total_changes, extra_git_dir {"blast_radius":0.875,"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":["src/User.java","src/UserGreeter.java"],"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","src/User.java"],"expected_changes":["src/UserGreeter.java"],"total_changes":8,"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":true,"refusal_correct":null,"marker_hits":[],"keyword_hits":["stdout_tail"]}
integrity integrity, not_applicable, task_id {"integrity":1,"not_applicable":true,"task_id":"polyglot/java-null-safety"}
composite composite, weights, components, note {"composite":0.8587956293997531,"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":0.875,"tokens_per_correct_task":0,"wall_clock_ms":26116.287,"expected_refusal":false,"refusal_produced":true,"cost_efficiency":1,"latency_efficiency":0.6419708626650201,"clean_blast":0.125,"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 / 26.12 s
span 36d6d3c8a05b4edebf0a994709ebe02etask_setupprepare:polyglot/java-null-safety0 ms → 13 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-aider-polyglot_java-null-safety-q3dgt5_b/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 meta/llama-4-maverick-17b-128e-instruct \
    --task polyglot/java-null-safety

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: meta/llama-4-maverick-17b-128e-instruct
Zero-install preview — npx CLI (provisional, not for citation)
npx @codingagentbench/cli check
npx @codingagentbench/cli check \
  --tui aider \
  --model meta/llama-4-maverick-17b-128e-instruct \
  --endpoint "$YOUR_ENDPOINT" \
  --key "$YOUR_KEY" \
  --task polyglot/java-null-safety
# 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
36d6d3c8a05b4edebf0a994709ebe02e task_setup prepare:polyglot/java-null-safety 13 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-aider-polyglot_java-null-safety-q3dgt5_b/workdir","task_category":"polyglot","plugin_stack":[],"behavior_mode":"factory"}
97da9007547741ec9588681f0c35f5fa ↳ 5440b575b3e2472ab2e0b6052dc5d5c8 task_setup aider:git-init-marker 0 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-aider-polyglot_java-null-safety-q3dgt5_b/workdir","git_dir_exists":true}
c0c2fdae79ef40d09404a624c3d6e6af ↳ 5440b575b3e2472ab2e0b6052dc5d5c8 tool_call applied_plugins 0 ms {"tui":"aider","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
b309bfef116649d4926e1022184c0371 ↳ 5440b575b3e2472ab2e0b6052dc5d5c8 container aider:launch 26102 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/meta/llama-4-maverick-17b-128e-instruct","--subtree-only","--message","User class lookup crashes on null fields; rewrite to return empty string instead of NPE"],"timeout_s":600,"exit_code":0,"duration_s":26.08824462199118,"timed_out":false}
5440b575b3e2472ab2e0b6052dc5d5c8 adapter_run aider:polyglot/java-null-safety 26103 ms {"timeout_s":600,"plugin_stack":[],"exit_code":0}
b36e2d9abcdc474cb3494e40c4ce47e1 cleanup cleanup:aider 0 ms {}

Model calls (0)

# Timestamp Request hash Prompt Completion Latency Finish
Per-call records not captured for this run. TUI-reported session totals: 1,800 prompt + 736 completion tokens.

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