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CodingAgentBench

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

mutations
mutations/go-binary-search-offbyone
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
630.0s
Blast
0.000
Refusal
—
Integrity
1.000
Composite
0.503

Run identity

cell_id
free-20260527/opencode/mistralai/mistral-small-4-119b-2603/mutations/go-binary-search-offbyone
sweep_id
free-20260527
container_image
—
image_digest
—
model_build_id
mistralai/mistral-small-4-119b-2603
exit_code
-1

Timing

started_at
2026-06-16T18:17:42.546139Z
ended_at
2026-06-16T18:28:12.549235Z
duration
630.00 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":"--- FAIL: TestSearch_RightmostElement (0.00s)\n search_test.go:19: got -1 want 4\n--- FAIL: TestSearch_Single (0.00s)\n search_test.go:31: got -1 want 0\nFAIL\nFAIL\tcodingagentbench/gobinarysearch\t0.003s\nFAIL\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":0}
latency wall_clock_ms, container_active_ms, model_call_ms {"wall_clock_ms":630003.096,"container_active_ms":630001.495,"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/go-binary-search-offbyone"}
composite composite, weights, components, note {"composite":0.5034534096496579,"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":630003.096,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.35635606433105255,"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 / 630.00 s
span c227dff3b7934e98ada0cf285dec43batask_setupprepare:mutations/go-binary-search-offbyone0 ms → 0 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-opencode-mutations_go-binary-search-offbyone-7pj9ryve/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/go-binary-search-offbyone

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/go-binary-search-offbyone
# 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
c227dff3b7934e98ada0cf285dec43ba task_setup prepare:mutations/go-binary-search-offbyone 0 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-opencode-mutations_go-binary-search-offbyone-7pj9ryve/workdir","task_category":"mutations","plugin_stack":[],"behavior_mode":"factory"}
4ad69b46dd864d4c85ec46a75934e7e5 ↳ f12358a10bec4eb092731c87aafb2a68 tool_call applied_plugins 0 ms {"tui":"opencode","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
75d631bbb7444183aa1141397d934b5c ↳ f12358a10bec4eb092731c87aafb2a68 container opencode-run:mutations/go-binary-search-offbyone 630001 ms {"image":"codingagentbench/opencode:v1.15.10","model":"mistralai/mistral-small-4-119b-2603","base_url":"http://172.17.0.1:31415/v1"}
f12358a10bec4eb092731c87aafb2a68 adapter_run opencode:mutations/go-binary-search-offbyone 630003 ms {"timeout_s":600,"plugin_stack":[],"exit_code":-1,"error":"adapter timed out after 630s (outer guard)"}
7f2117bbfc064b9eb85c96032752a02a 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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