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CodingAgentBench

opencode × mistralai/mistral-small-4-119b-2603

mutations
mutations/python-comparator-swap
This run timed out — the agent ran but never finished within the harness limit.
adapter timed out after 630s (outer guard)
All scores are reported as recorded. A failed run's zero is an honest measurement.

Per-axis scores

Pass
0.000
Tokens/correct
Wall
639.6s
Blast
0.000
Refusal
Integrity
1.000
Composite
0.503

Run identity

cell_id
free-20260527/opencode/mistralai/mistral-small-4-119b-2603/mutations/python-comparator-swap
sweep_id
free-20260527
container_image
image_digest
model_build_id
mistralai/mistral-small-4-119b-2603
exit_code
-1

Timing

started_at
2026-06-16T18:17:44.936354Z
ended_at
2026-06-16T18:28:24.582090Z
duration
639.65 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":"\n\n======================================================================\nFAIL: test_ints_ascending (test_sorter.TestSorter.test_ints_ascending)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n File \"/home/andrew/.codingagentbench-scratch/codingagentbench-opencode-mutations_python-comparator-swap-e0g0ov73/workdir/tests/test_sorter.py\", line 12, in test_ints_ascending\n self.assertEqual(sort_items([5, 2, 9, 1, 3]), [1, 2, 3, 5, 9])\nAssertionError: Lists differ: [9, 5, 3, 2, 1] != [1, 2, 3, 5, 9]\n\nFirst differing element 0:\n9\n1\n\n- [9, 5, 3, 2, 1]\n+ [1, 2, 3, 5, 9]\n\n======================================================================\nFAIL: test_strings_ascending (test_sorter.TestSorter.test_strings_ascending)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n File \"/home/andrew/.codingagentbench-scratch/codingagentbench-opencode-mutations_python-comparator-swap-e0g0ov73/workdir/tests/test_sorter.py\", line 15, in test_strings_ascending\n self.assertEqual(sort_items([\"b\", \"a\", \"c\"]), [\"a\", \"b\", \"c\"])\nAssertionError: Lists differ: ['c', 'b', 'a'] != ['a', 'b', 'c']\n\nFirst differing element 0:\n'c'\n'a'\n\n- ['c', 'b', 'a']\n? ^ ^\n\n+ ['a', 'b', 'c']\n? ^ ^\n\n\n======================================================================\nFAIL: test_with_negatives (test_sorter.TestSorter.test_with_negatives)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n File \"/home/andrew/.codingagentbench-scratch/codingagentbench-opencode-mutations_python-comparator-swap-e0g0ov73/workdir/tests/test_sorter.py\", line 27, in test_with_negatives\n self.assertEqual(sort_items([0, -1, -2, 5]), [-2, -1, 0, 5])\nAssertionError: Lists differ: [5, 0, -1, -2] != [-2, -1, 0, 5]\n\nFirst differing element 0:\n5\n-2\n\n- [5, 0, -1, -2]\n+ [-2, -1, 0, 5]\n\n----------------------------------------------------------------------\nRan 6 tests in 0.002s\n\nFAILED (failures=4)\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":639645.736,"container_active_ms":637774.257,"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":"mutations/python-comparator-swap"}
composite composite, weights, components, note {"composite":0.5033299848309146,"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":639645.736,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.35553323220609756,"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 / 639.65 s
span 7e4efccd652b40968d767bfc0773b64btask_setupprepare:mutations/python-comparator-swap0 ms1 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-opencode-mutations_python-comparator-swap-e0g0ov73/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
docker run — exact image used in this run
# digest unavailable for this cell — image may have changed
docker run --rm \
  -e CAB_ENDPOINT="$YOUR_ENDPOINT" \
  -e CAB_KEY="$YOUR_KEY" \
  codingagentbench/opencode \
  run-cell \
    --tui opencode \
    --model mistralai/mistral-small-4-119b-2603 \
    --task mutations/python-comparator-swap

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: mistralai/mistral-small-4-119b-2603
Zero-install preview — npx CLI (provisional, not for citation)
npx @codingagentbench/cli check
npx @codingagentbench/cli check \
  --tui opencode \
  --model mistralai/mistral-small-4-119b-2603 \
  --endpoint "$YOUR_ENDPOINT" \
  --key "$YOUR_KEY" \
  --task mutations/python-comparator-swap
# 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
7e4efccd652b40968d767bfc0773b64b task_setup prepare:mutations/python-comparator-swap 1 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-opencode-mutations_python-comparator-swap-e0g0ov73/workdir","task_category":"mutations","plugin_stack":[],"behavior_mode":"factory"}
01585c8c7bf3445c8e4c21db57b6ad11 ↳ 2c275fc32cff4b34820474da8335b1ed tool_call applied_plugins 0 ms {"tui":"opencode","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
60282724414b40d6bf67247f398df68b ↳ 2c275fc32cff4b34820474da8335b1ed container opencode-run:mutations/python-comparator-swap 637774 ms {"image":"codingagentbench/opencode:v1.15.10","model":"mistralai/mistral-small-4-119b-2603","base_url":"http://172.17.0.1:31415/v1"}
2c275fc32cff4b34820474da8335b1ed adapter_run opencode:mutations/python-comparator-swap 639644 ms {"timeout_s":600,"plugin_stack":[],"exit_code":-1,"error":"adapter timed out after 630s (outer guard)"}
70e7c77b96cf4a3ea8d66921e3c4c688 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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