Skip to main content
CodingAgentBench

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

polyglot
polyglot/python-palindrome-check

Per-axis scores

Pass
1.000
Tokens/correct
—
Wall
203.1s
Blast
0.000
Refusal
—
Integrity
1.000
Composite
0.914

Run identity

cell_id
newmodels-20260620/opencode/nvidia/nemotron-3-ultra-550b-a55b/polyglot/python-palindrome-check
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
0

Timing

started_at
2026-06-20T21:54:01.961620Z
ended_at
2026-06-20T21:57:25.029516Z
duration
203.07 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":"","stderr_tail":"test_basic_false (test_palindrome.TestPalindrome.test_basic_false) ... ok\ntest_basic_true (test_palindrome.TestPalindrome.test_basic_true) ... ok\ntest_empty (test_palindrome.TestPalindrome.test_empty) ... ok\ntest_mixed_case (test_palindrome.TestPalindrome.test_mixed_case) ... ok\ntest_not_palindrome_sentence (test_palindrome.TestPalindrome.test_not_palindrome_sentence) ... ok\ntest_punctuation_and_case (test_palindrome.TestPalindrome.test_punctuation_and_case) ... ok\ntest_single (test_palindrome.TestPalindrome.test_single) ... ok\n\n----------------------------------------------------------------------\nRan 7 tests in 0.000s\n\nOK\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":1}
latency wall_clock_ms, container_active_ms, model_call_ms {"wall_clock_ms":203067.89599999998,"container_active_ms":203064.442,"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":["src/palindrome.py"],"unexpected_changes":[],"expected_changes":["src/palindrome.py"],"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/python-palindrome-check"}
composite composite, weights, components, note {"composite":0.9144186555068157,"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,"tokens_per_correct_task":0,"wall_clock_ms":203067.89599999998,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.4294577033787708,"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 / 203.07 s
span 714a64415f5d421c848aca8428ac55c1task_setupprepare:polyglot/python-palindrome-check0 ms → 2 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-opencode-polyglot_python-palindrome-check-bnh1ml5q/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/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 polyglot/python-palindrome-check

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 polyglot/python-palindrome-check
# 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
714a64415f5d421c848aca8428ac55c1 task_setup prepare:polyglot/python-palindrome-check 2 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-opencode-polyglot_python-palindrome-check-bnh1ml5q/workdir","task_category":"polyglot","plugin_stack":[],"behavior_mode":"factory"}
e84594db3f4f4ed9ab38ba51febd285a ↳ f6f0be17f5ee4d888fc29c47d845b973 tool_call applied_plugins 0 ms {"tui":"opencode","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
5eabb68aedaa42618692b9395de90eac ↳ f6f0be17f5ee4d888fc29c47d845b973 container opencode-run:polyglot/python-palindrome-check 203064 ms {"image":"codingagentbench/opencode:v1.15.10","model":"nvidia/nemotron-3-ultra-550b-a55b","base_url":"http://172.17.0.1:31415/v1","exit_code":0,"duration_s":203.028,"timed_out":false,"image_digest":"sha256:e56bdb69fb83ea2f8c81c06257f190fd4b5e91077e83d5536f722ff1b9c70275"}
f6f0be17f5ee4d888fc29c47d845b973 adapter_run opencode:polyglot/python-palindrome-check 203066 ms {"timeout_s":600,"plugin_stack":[],"exit_code":0}
e4975ad766e04135bdb298b6cef709ea cleanup cleanup:opencode 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: opencode × nvidia/nemotron-3-ultra-550b-a55b 91%](https://codingagentbench.com/badge/opencode/nvidia/nemotron-3-ultra-550b-a55b/polyglot/python-palindrome-check.svg)](https://codingagentbench.com/cell/opencode/nvidia/nemotron-3-ultra-550b-a55b/polyglot/python-palindrome-check)
HTML / iframe
<a href="https://codingagentbench.com/cell/opencode/nvidia/nemotron-3-ultra-550b-a55b/polyglot/python-palindrome-check"><img src="https://codingagentbench.com/badge/opencode/nvidia/nemotron-3-ultra-550b-a55b/polyglot/python-palindrome-check.svg" alt="CodingAgentBench: opencode × nvidia/nemotron-3-ultra-550b-a55b 91%" /></a>
CodingAgentBench: opencode × nvidia/nemotron-3-ultra-550b-a55b 91%