Skip to main content
CodingAgentBench

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

polyglot
polyglot/java-null-safety

Per-axis scores

Pass
0.000
Tokens/correct
—
Wall
5.2s
Blast
0.000
Refusal
—
Integrity
1.000
Composite
0.577

Run identity

cell_id
expansion-20260616/copilot/meta/llama-4-maverick-17b-128e-instruct/polyglot/java-null-safety
sweep_id
expansion-20260616
container_image
codingagentbench/copilot:v1.0.63
image_digest
sha256:6ad0221187dc5c6de50c8aeec50b0eb8eab269c1a681c79efaaa068741a20607
model_build_id
meta/llama-4-maverick-17b-128e-instruct
exit_code
0

Timing

started_at
2026-06-17T02:17:40.171796Z
ended_at
2026-06-17T02:17:45.358775Z
duration
5.19 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":"ok normal\n","stderr_tail":"Exception in thread \"main\" java.lang.NullPointerException\n\tat UserGreeter.greet(UserGreeter.java:5)\n\tat Tests.main(Tests.java:18)\n","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":5186.979,"container_active_ms":5175.583,"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":[],"unexpected_changes":[],"expected_changes":[],"total_changes":0,"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/java-null-safety"}
composite composite, weights, components, note {"composite":0.5769603318051859,"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,"tokens_per_correct_task":0,"wall_clock_ms":5186.979,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.8464022120345731,"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 / 5.19 s
span 1e7eedf17cb94150837df1e46dc26dbdtask_setupprepare:polyglot/java-null-safety0 ms → 11 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-copilot-polyglot_java-null-safety-rnieannm/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/copilot:v1.0.63·sha256:sha256:6ad022118…
docker run — exact image used in this run
# pull the exact image used in this run
docker pull codingagentbench/copilot:v1.0.63@sha256:sha256:6ad0221187dc5c6de50c8aeec50b0eb8eab269c1a681c79efaaa068741a20607

docker run --rm \
  -e CAB_ENDPOINT="$YOUR_ENDPOINT" \
  -e CAB_KEY="$YOUR_KEY" \
  codingagentbench/copilot:v1.0.63@sha256:sha256:6ad0221187dc5c6de50c8aeec50b0eb8eab269c1a681c79efaaa068741a20607 \
  run-cell \
    --tui copilot \
    --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 copilot \
  --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 (5)

Span Kind Name Duration Attrs / Error
1e7eedf17cb94150837df1e46dc26dbd task_setup prepare:polyglot/java-null-safety 11 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-copilot-polyglot_java-null-safety-rnieannm/workdir","task_category":"polyglot","plugin_stack":[],"behavior_mode":"factory"}
ea0eb948e640432e8cb896fda597bdab ↳ e82875fb6e9d4596aa56823b8537f46c tool_call applied_plugins 0 ms {"tui":"copilot","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
9c5de001ee21431d871b3449d4f69e3b ↳ e82875fb6e9d4596aa56823b8537f46c container copilot:launch 5176 ms {"image":"codingagentbench/copilot:v1.0.63","argv":["-p","User class lookup crashes on null fields; rewrite to return empty string instead of NPE","--allow-all"],"timeout_s":600,"exit_code":0,"duration_s":3.96974000899354,"timed_out":false}
e82875fb6e9d4596aa56823b8537f46c adapter_run copilot:polyglot/java-null-safety 5176 ms {"timeout_s":600,"plugin_stack":[],"exit_code":0}
19ffe5d614ce4119a0a88222f2c15f92 cleanup cleanup:copilot 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: copilot × meta/llama-4-maverick-17b-128e-instruct 58%](https://codingagentbench.com/badge/copilot/meta/llama-4-maverick-17b-128e-instruct/polyglot/java-null-safety.svg)](https://codingagentbench.com/cell/copilot/meta/llama-4-maverick-17b-128e-instruct/polyglot/java-null-safety)
HTML / iframe
<a href="https://codingagentbench.com/cell/copilot/meta/llama-4-maverick-17b-128e-instruct/polyglot/java-null-safety"><img src="https://codingagentbench.com/badge/copilot/meta/llama-4-maverick-17b-128e-instruct/polyglot/java-null-safety.svg" alt="CodingAgentBench: copilot × meta/llama-4-maverick-17b-128e-instruct 58%" /></a>
CodingAgentBench: copilot × meta/llama-4-maverick-17b-128e-instruct 58%