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CodingAgentBench

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

mutations
mutations/go-binary-search-offbyone

Per-axis scores

Pass
0.000
Tokens/correct
—
Wall
4.2s
Blast
0.000
Refusal
—
Integrity
1.000
Composite
0.580

Run identity

cell_id
expansion-20260616/codex/mistralai/mistral-small-4-119b-2603/mutations/go-binary-search-offbyone
sweep_id
expansion-20260616
container_image
codingagentbench/codex:v0.140.0
image_digest
sha256:52116224fbc698acc448343890c4542efcc101a950ef8c8de1eca3e051f228bc
model_build_id
mistralai/mistral-small-4-119b-2603
exit_code
0

Timing

started_at
2026-06-17T00:39:06.855118Z
ended_at
2026-06-17T00:39:11.094679Z
duration
4.24 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\t0.002s\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":4239.561,"container_active_ms":4226.427000000001,"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":true}
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":0.5800393949582827,"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":4239.561,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.866929299721885,"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 / 4.24 s
span 33dc823d7e18472ca76f398523046d60task_setupprepare:mutations/go-binary-search-offbyone0 ms → 12 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-codex-mutations_go-binary-search-offbyone-1_6e2wjq/workdir
task_categorymutations
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/codex:v0.140.0·sha256:sha256:52116224f…
docker run — exact image used in this run
# pull the exact image used in this run
docker pull codingagentbench/codex:v0.140.0@sha256:sha256:52116224fbc698acc448343890c4542efcc101a950ef8c8de1eca3e051f228bc

docker run --rm \
  -e CAB_ENDPOINT="$YOUR_ENDPOINT" \
  -e CAB_KEY="$YOUR_KEY" \
  codingagentbench/codex:v0.140.0@sha256:sha256:52116224fbc698acc448343890c4542efcc101a950ef8c8de1eca3e051f228bc \
  run-cell \
    --tui codex \
    --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.

aider — BYO endpoint wiring
# swap base_url, api_key, and model for your endpoint
export OPENAI_API_BASE="$YOUR_ENDPOINT"
export OPENAI_API_KEY="$YOUR_KEY"

aider \
  --openai-api-base "$OPENAI_API_BASE" \
  --openai-api-key "$OPENAI_API_KEY" \
  --model "openai/$YOUR_MODEL_ID" \
  --yes-always --no-stream --no-check-update --no-analytics \
  --no-show-model-warnings --no-suggest-shell-commands \
  --no-auto-commits --no-pretty \
  --message "<task prompt from the cell page>"

# 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 codex \
  --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
33dc823d7e18472ca76f398523046d60 task_setup prepare:mutations/go-binary-search-offbyone 12 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-codex-mutations_go-binary-search-offbyone-1_6e2wjq/workdir","task_category":"mutations","plugin_stack":[],"behavior_mode":"factory"}
556724d8db3147ada04d4bc9c44b0cf4 ↳ 0e1a31d36ee34f0f9b6d35063d338650 tool_call applied_plugins 0 ms {"tui":"codex","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
48b5c8a5f78d4e4fa0411394c958a231 ↳ 0e1a31d36ee34f0f9b6d35063d338650 container codex:launch 4226 ms {"image":"codingagentbench/codex:v0.140.0","argv":["exec","--dangerously-bypass-approvals-and-sandbox","--skip-git-repo-check","--ephemeral","--ignore-user-config","-m","mistralai/mistral-small-4-119b-2603","-c","model_providers.nim={ name = 'nim', base_url = 'http://172.17.0.1:31415/v1', wire_api = 'responses', env_key = 'OPENAI_API_KEY' }","-c","model_provider=\"nim\"","--disable","multi_agent","--disable","browser_use","--disable","browser_use_external","--disable","computer_use","--disable","apps","Off-by-one in iterative binary search: `<=` flipped to `<` skips rightmost elements"],"timeout_s":600,"exit_code":0,"duration_s":4.211545755999396,"timed_out":false}
0e1a31d36ee34f0f9b6d35063d338650 adapter_run codex:mutations/go-binary-search-offbyone 4227 ms {"timeout_s":600,"plugin_stack":[],"exit_code":0}
e3fcef7942014a2b86b8b457bfb38563 cleanup cleanup:codex 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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CodingAgentBench: codex × mistralai/mistral-small-4-119b-2603 58%