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CodingAgentBench

opencode × nvidia/llama-3.3-nemotron-super-49b-v1

polyglot
polyglot/python-reverse-string

Per-axis scores

Pass
0.000
Tokens/correct
Wall
23.8s
Blast
0.000
Refusal
Integrity
1.000
Composite
0.548

Run identity

cell_id
free-20260527/opencode/nvidia/llama-3.3-nemotron-super-49b-v1/polyglot/python-reverse-string
sweep_id
free-20260527
container_image
codingagentbench/opencode:v1.15.10
image_digest
sha256:e56bdb69fb83ea2f8c81c06257f190fd4b5e91077e83d5536f722ff1b9c70275
model_build_id
nvidia/llama-3.3-nemotron-super-49b-v1
exit_code
0

Timing

started_at
2026-06-16T18:06:41.396413Z
ended_at
2026-06-16T18:07:05.165503Z
duration
23.77 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":"","stderr_tail":"test_empty (test_reverse.TestReverse.test_empty) ... ok\ntest_palindrome_stays (test_reverse.TestReverse.test_palindrome_stays) ... ok\ntest_single_char (test_reverse.TestReverse.test_single_char) ... ok\ntest_unicode (test_reverse.TestReverse.test_unicode) ... FAIL\ntest_with_spaces (test_reverse.TestReverse.test_with_spaces) ... FAIL\ntest_word (test_reverse.TestReverse.test_word) ... FAIL\n\n======================================================================\nFAIL: test_unicode (test_reverse.TestReverse.test_unicode)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n File \"/home/andrew/.codingagentbench-scratch/codingagentbench-opencode-polyglot_python-reverse-string-fki9ida6/workdir/tests/test_reverse.py\", line 27, in test_unicode\n self.assertEqual(reverse(\"héllo\"), \"olléh\")\nAssertionError: 'héllo' != 'olléh'\n- héllo\n+ olléh\n\n\n======================================================================\nFAIL: test_with_spaces (test_reverse.TestReverse.test_with_spaces)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n File \"/home/andrew/.codingagentbench-scratch/codingagentbench-opencode-polyglot_python-reverse-string-fki9ida6/workdir/tests/test_reverse.py\", line 24, in test_with_spaces\n self.assertEqual(reverse(\"ab cd\"), \"dc ba\")\nAssertionError: 'ab cd' != 'dc ba'\n- ab cd\n+ dc ba\n\n\n======================================================================\nFAIL: test_word (test_reverse.TestReverse.test_word)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n File \"/home/andrew/.codingagentbench-scratch/codingagentbench-opencode-polyglot_python-reverse-string-fki9ida6/workdir/tests/test_reverse.py\", line 18, in test_word\n self.assertEqual(reverse(\"hello\"), \"olleh\")\nAssertionError: 'hello' != 'olleh'\n- hello\n+ olleh\n\n\n----------------------------------------------------------------------\nRan 6 tests in 0.001s\n\nFAILED (failures=3)\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":23769.09,"container_active_ms":23767.275,"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":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-reverse-string"}
composite composite, weights, components, note {"composite":0.5481341840778162,"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":23769.09,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.6542278938521081,"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 / 23.77 s
span f216644d6f3c406c8488564efe8470bdtask_setupprepare:polyglot/python-reverse-string0 ms1 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-opencode-polyglot_python-reverse-string-fki9ida6/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/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/llama-3.3-nemotron-super-49b-v1 \
    --task polyglot/python-reverse-string

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/llama-3.3-nemotron-super-49b-v1
Zero-install preview — npx CLI (provisional, not for citation)
npx @codingagentbench/cli check
npx @codingagentbench/cli check \
  --tui opencode \
  --model nvidia/llama-3.3-nemotron-super-49b-v1 \
  --endpoint "$YOUR_ENDPOINT" \
  --key "$YOUR_KEY" \
  --task polyglot/python-reverse-string
# 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
f216644d6f3c406c8488564efe8470bd task_setup prepare:polyglot/python-reverse-string 1 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-opencode-polyglot_python-reverse-string-fki9ida6/workdir","task_category":"polyglot","plugin_stack":[],"behavior_mode":"factory"}
412ac5ac74f44a84b6a5f6a2b11eb3a3 ↳ 7a36d68c1396409c81602516500a50eb tool_call applied_plugins 0 ms {"tui":"opencode","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
3dcdbbf4aa4b4c2fab16d3bf1a64a530 ↳ 7a36d68c1396409c81602516500a50eb container opencode-run:polyglot/python-reverse-string 23767 ms {"image":"codingagentbench/opencode:v1.15.10","model":"nvidia/llama-3.3-nemotron-super-49b-v1","base_url":"http://172.17.0.1:31415/v1","exit_code":0,"duration_s":4.484,"timed_out":false,"image_digest":"sha256:e56bdb69fb83ea2f8c81c06257f190fd4b5e91077e83d5536f722ff1b9c70275"}
7a36d68c1396409c81602516500a50eb adapter_run opencode:polyglot/python-reverse-string 23768 ms {"timeout_s":600,"plugin_stack":[],"exit_code":0}
624f9b7c3f6f420caf1295a9d5c6ebc0 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.

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README / Markdown
[![CodingAgentBench: opencode × nvidia/llama-3.3-nemotron-super-49b-v1 55%](https://codingagentbench.com/badge/opencode/nvidia/llama-3.3-nemotron-super-49b-v1/polyglot/python-reverse-string.svg)](https://codingagentbench.com/cell/opencode/nvidia/llama-3.3-nemotron-super-49b-v1/polyglot/python-reverse-string)
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<a href="https://codingagentbench.com/cell/opencode/nvidia/llama-3.3-nemotron-super-49b-v1/polyglot/python-reverse-string"><img src="https://codingagentbench.com/badge/opencode/nvidia/llama-3.3-nemotron-super-49b-v1/polyglot/python-reverse-string.svg" alt="CodingAgentBench: opencode × nvidia/llama-3.3-nemotron-super-49b-v1 55%" /></a>
CodingAgentBench: opencode × nvidia/llama-3.3-nemotron-super-49b-v1 55%