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CodingAgentBench

opencode × nvidia/nemotron-3-ultra-550b-a55b

mutations
mutations/ts-arg-parser-default
This run timed out — the agent ran but never finished within the harness limit.
ConnectionError: UnixHTTPConnectionPool(host='localhost', port=None): Read timed out.
All scores are reported as recorded. A failed run's zero is an honest measurement.

Per-axis scores

Pass
1.000
Tokens/correct
—
Wall
600.7s
Blast
0.833
Refusal
—
Integrity
1.000
Composite
0.821

Run identity

cell_id
newmodels-20260620/opencode/nvidia/nemotron-3-ultra-550b-a55b/mutations/ts-arg-parser-default
sweep_id
newmodels-20260620
container_image
codingagentbench/opencode:v1.15.10
image_digest
sha256:e56bdb69fb83ea2f8c81c06257f190fd4b5e91077e83d5536f722ff1b9c70275
model_build_id
nvidia/nemotron-3-ultra-550b-a55b
exit_code
-1

Timing

started_at
2026-06-20T21:39:07.499975Z
ended_at
2026-06-20T21:49:08.244025Z
duration
600.75 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":"✔ defaultsToPort8080 (0.819628ms)\n✔ overrides port (0.125439ms)\n✔ overrides host (0.097586ms)\n✔ overrides both (0.796634ms)\nℹ tests 4\nℹ suites 0\nℹ pass 4\nℹ fail 0\nℹ cancelled 0\nℹ skipped 0\nℹ todo 0\nℹ duration_ms 73.015796\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":600744.05,"container_active_ms":600739.8960000001,"model_call_ms":0}
blast_radius blast_radius, added, removed, modified, unexpected_changes, expected_changes, total_changes, extra_git_dir {"blast_radius":0.8333333333333334,"added":["build/src/cli.js","build/tests/cli.test.js","package-lock.json"],"removed":[],"modified":["package.json","src/cli.ts","tsconfig.json"],"unexpected_changes":["build/src/cli.js","build/tests/cli.test.js","package-lock.json","package.json","tsconfig.json"],"expected_changes":["src/cli.ts"],"total_changes":6,"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":"mutations/ts-arg-parser-default"}
composite composite, weights, components, note {"composite":0.8205100186905263,"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":0.8333333333333334,"tokens_per_correct_task":0,"wall_clock_ms":600744.05,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.35895568015906293,"clean_blast":0.16666666666666663,"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 / 600.74 s
span e099b9e6a8b14ea98030c55e80a003c8task_setupprepare:mutations/ts-arg-parser-default0 ms → 2 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-opencode-mutations_ts-arg-parser-default-spyntue6/workdir
task_categorymutations
plugin_stack[]
behavior_modefactory

Watch it stall

the agent ran but never finished within the harness timeout
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/opencode:v1.15.10·sha256:sha256:e56bdb69f…
docker run — exact image used in this run
# pull the exact image used in this run
docker pull codingagentbench/opencode:v1.15.10@sha256:sha256:e56bdb69fb83ea2f8c81c06257f190fd4b5e91077e83d5536f722ff1b9c70275

docker run --rm \
  -e CAB_ENDPOINT="$YOUR_ENDPOINT" \
  -e CAB_KEY="$YOUR_KEY" \
  codingagentbench/opencode:v1.15.10@sha256:sha256:e56bdb69fb83ea2f8c81c06257f190fd4b5e91077e83d5536f722ff1b9c70275 \
  run-cell \
    --tui opencode \
    --model nvidia/nemotron-3-ultra-550b-a55b \
    --task mutations/ts-arg-parser-default

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.

opencode — BYO endpoint wiring
# Write .opencode/config.json in the task workdir:
# {
#   "providers": {
#     "codingagentbench": {
#       "type": "openai",
#       "options": {
#         "baseURL": "$YOUR_ENDPOINT",
#         "apiKey": "$YOUR_KEY"
#       },
#       "models": [{ "id": "$YOUR_MODEL_ID", "name": "$YOUR_MODEL_ID" }]
#     }
#   }
# }

opencode run \
  --format json \
  --dangerously-skip-permissions \
  -m codingagentbench/$YOUR_MODEL_ID

# Published cell used model: nvidia/nemotron-3-ultra-550b-a55b
Zero-install preview — npx CLI (provisional, not for citation)
npx @codingagentbench/cli check
npx @codingagentbench/cli check \
  --tui opencode \
  --model nvidia/nemotron-3-ultra-550b-a55b \
  --endpoint "$YOUR_ENDPOINT" \
  --key "$YOUR_KEY" \
  --task mutations/ts-arg-parser-default
# 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
e099b9e6a8b14ea98030c55e80a003c8 task_setup prepare:mutations/ts-arg-parser-default 2 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-opencode-mutations_ts-arg-parser-default-spyntue6/workdir","task_category":"mutations","plugin_stack":[],"behavior_mode":"factory"}
e90d46e0b53b49b3a0e451b1f611c54d ↳ c04cadb02e214d79aba5e9eb264fa6a9 tool_call applied_plugins 0 ms {"tui":"opencode","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
fcc01e97c2014210a4bb2c018b80d99f ↳ c04cadb02e214d79aba5e9eb264fa6a9 container opencode-run:mutations/ts-arg-parser-default 600740 ms err: ConnectionError: UnixHTTPConnectionPool(host='localhost', port=None): Read timed out.
c04cadb02e214d79aba5e9eb264fa6a9 adapter_run opencode:mutations/ts-arg-parser-default 600741 ms {"timeout_s":600,"plugin_stack":[],"exit_code":-1,"error":"ConnectionError: UnixHTTPConnectionPool(host='localhost', port=None): Read timed out."}
e281afc1f5b54941b278d69eaddf1492 cleanup cleanup:opencode 1 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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<a href="https://codingagentbench.com/cell/opencode/nvidia/nemotron-3-ultra-550b-a55b/mutations/ts-arg-parser-default"><img src="https://codingagentbench.com/badge/opencode/nvidia/nemotron-3-ultra-550b-a55b/mutations/ts-arg-parser-default.svg" alt="CodingAgentBench: opencode × nvidia/nemotron-3-ultra-550b-a55b 82%" /></a>
CodingAgentBench: opencode × nvidia/nemotron-3-ultra-550b-a55b 82%