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CodingAgentBench

openhands × openai/gpt-oss-120b

polyglot
polyglot/go-json-parser-fix
Model incompatible with this TUI — they could not handshake.
All scores are reported as recorded. A failed run's zero is an honest measurement.

Per-axis scores

Pass
0.000
Tokens/correct
—
Wall
13.5s
Blast
0.000
Refusal
—
Integrity
1.000
Composite
0.559

Run identity

cell_id
free-20260527/openhands/openai/gpt-oss-120b/polyglot/go-json-parser-fix
sweep_id
free-20260527
container_image
codingagentbench/openhands:1.7.0
image_digest
sha256:7fcaf222644a5cb0afffe018f038d270130b5af3b8af366cd960f2d596a4342c
model_build_id
openai/gpt-oss-120b
exit_code
1

Timing

started_at
2026-06-16T02:02:49.111491Z
ended_at
2026-06-16T02:03:02.658973Z
duration
13.55 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: TestMarshal_IncludesZeroCount (0.00s)\n parser_test.go:26: zero count dropped: got map[name:x] want map[count:0 name:x]\n--- FAIL: TestMarshal_EmptyName (0.00s)\n parser_test.go:42: got map[name:] want map[count:0 name:]\nFAIL\nFAIL\tcodingagentbench/gojsonparser\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":13547.482,"container_active_ms":13544.702,"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/go-json-parser-fix"}
composite composite, weights, components, note {"composite":0.5593338709310681,"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":13547.482,"expected_refusal":false,"refusal_produced":false,"cost_efficiency":1,"latency_efficiency":0.7288924728737878,"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 / 13.55 s
span 95802d99fede480583c8cff4cf658efbtask_setupprepare:polyglot/go-json-parser-fix0 ms → 2 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-openhands-polyglot_go-json-parser-fix-om2ubk7c/workdir
task_categorypolyglot
plugin_stack[]
behavior_modefactory

Watch it fail

the TUI and model could not handshake

Run it yourself

Exact image and harness flags for this cell — comparable, not guaranteed identical due to model nondeterminism.

Imagecodingagentbench/openhands:1.7.0·sha256:sha256:7fcaf2226…
docker run — exact image used in this run
# pull the exact image used in this run
docker pull codingagentbench/openhands:1.7.0@sha256:sha256:7fcaf222644a5cb0afffe018f038d270130b5af3b8af366cd960f2d596a4342c

docker run --rm \
  -e CAB_ENDPOINT="$YOUR_ENDPOINT" \
  -e CAB_KEY="$YOUR_KEY" \
  codingagentbench/openhands:1.7.0@sha256:sha256:7fcaf222644a5cb0afffe018f038d270130b5af3b8af366cd960f2d596a4342c \
  run-cell \
    --tui openhands \
    --model openai/gpt-oss-120b \
    --task polyglot/go-json-parser-fix

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: openai/gpt-oss-120b
Zero-install preview — npx CLI (provisional, not for citation)
npx @codingagentbench/cli check
npx @codingagentbench/cli check \
  --tui openhands \
  --model openai/gpt-oss-120b \
  --endpoint "$YOUR_ENDPOINT" \
  --key "$YOUR_KEY" \
  --task polyglot/go-json-parser-fix
# 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
95802d99fede480583c8cff4cf658efb task_setup prepare:polyglot/go-json-parser-fix 2 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-openhands-polyglot_go-json-parser-fix-om2ubk7c/workdir","task_category":"polyglot","plugin_stack":[],"behavior_mode":"factory"}
cab51681552f492a882406fc172eb91b ↳ 8107d79b924b45e9be6c67124c1bf995 tool_call applied_plugins 0 ms {"tui":"openhands","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
7d77db2047004e20874f0e00cb9c5783 ↳ 8107d79b924b45e9be6c67124c1bf995 container openhands:run 13544 ms {"image":"codingagentbench/openhands:1.7.0","command":["/app/.venv/bin/python","/opt/openhands_run.py","-t","JSON parser drops zero-valued fields because of `omitempty` on a required field","--workspace","/workspace"],"deviation":"root+docker.sock; see module docstring","exit_code":1,"timed_out":false,"docker_sock_mounted":true,"read_only":false}
8107d79b924b45e9be6c67124c1bf995 adapter_run openhands:polyglot/go-json-parser-fix 13545 ms {"timeout_s":600,"plugin_stack":[],"exit_code":1}
0e7ed8ac3db84af480ae39122811e9f0 cleanup cleanup:openhands 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: openhands × openai/gpt-oss-120b 56%](https://codingagentbench.com/badge/openhands/openai/gpt-oss-120b/polyglot/go-json-parser-fix.svg)](https://codingagentbench.com/cell/openhands/openai/gpt-oss-120b/polyglot/go-json-parser-fix)
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<a href="https://codingagentbench.com/cell/openhands/openai/gpt-oss-120b/polyglot/go-json-parser-fix"><img src="https://codingagentbench.com/badge/openhands/openai/gpt-oss-120b/polyglot/go-json-parser-fix.svg" alt="CodingAgentBench: openhands × openai/gpt-oss-120b 56%" /></a>
CodingAgentBench: openhands × openai/gpt-oss-120b 56%