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CodingAgentBench

opencode × stepfun-ai/step-3.5-flash

polyglot
polyglot/go-http-handler-fix

Per-axis scores

Pass
1.000
Tokens/correct
—
Wall
259.3s
Blast
0.000
Refusal
—
Integrity
1.000
Composite
0.912

Run identity

cell_id
free-20260527/opencode/stepfun-ai/step-3.5-flash/polyglot/go-http-handler-fix
sweep_id
free-20260527
container_image
codingagentbench/opencode:v1.15.10
image_digest
sha256:e56bdb69fb83ea2f8c81c06257f190fd4b5e91077e83d5536f722ff1b9c70275
model_build_id
stepfun-ai/step-3.5-flash
exit_code
0

Timing

started_at
2026-06-16T17:41:33.700191Z
ended_at
2026-06-16T17:45:53.014593Z
duration
259.31 s
tokens
not recorded

Scorer breakdown

Axis Keys Values
pass_rate pass, exit_code, timed_out, stdout_tail, stderr_tail, partial_score {"pass":1,"exit_code":0,"timed_out":false,"stdout_tail":"ok \tcodingagentbench/gohttphandler\t0.003s\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":1}
latency wall_clock_ms, container_active_ms, model_call_ms {"wall_clock_ms":259314.40199999997,"container_active_ms":259312.31600000002,"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":["handler.go"],"unexpected_changes":[],"expected_changes":["handler.go"],"total_changes":1,"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":true,"refusal_correct":null,"marker_hits":[],"keyword_hits":["stdout_tail"]}
integrity integrity, not_applicable, task_id {"integrity":1,"not_applicable":true,"task_id":"polyglot/go-http-handler-fix"}
composite composite, weights, components, note {"composite":0.9117218017865918,"weights":{"pass_rate":0.4,"integrity":0.2,"cost":0.15,"latency":0.15,"blast_radius":0.1},"components":{"pass_rate":1,"integrity":1,"blast_radius":0,"tokens_per_correct_task":0,"wall_clock_ms":259314.40199999997,"expected_refusal":false,"refusal_produced":true,"cost_efficiency":1,"latency_efficiency":0.4114786785772782,"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 / 259.31 s
span bb3ef975aa3246c1b385a2c6c81a2b0atask_setupprepare:polyglot/go-http-handler-fix0 ms → 1 ms
workdir/home/andrew/.codingagentbench-scratch/codingagentbench-opencode-polyglot_go-http-handler-fix-s1th0rib/workdir
task_categorypolyglot
plugin_stack[]
behavior_modefactory

Terminal playback

replay of the run — opencode cells show genuine step timing; others show a span summary
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: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 stepfun-ai/step-3.5-flash \
    --task polyglot/go-http-handler-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.

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: stepfun-ai/step-3.5-flash
Zero-install preview — npx CLI (provisional, not for citation)
npx @codingagentbench/cli check
npx @codingagentbench/cli check \
  --tui opencode \
  --model stepfun-ai/step-3.5-flash \
  --endpoint "$YOUR_ENDPOINT" \
  --key "$YOUR_KEY" \
  --task polyglot/go-http-handler-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
bb3ef975aa3246c1b385a2c6c81a2b0a task_setup prepare:polyglot/go-http-handler-fix 1 ms {"workdir":"/home/andrew/.codingagentbench-scratch/codingagentbench-opencode-polyglot_go-http-handler-fix-s1th0rib/workdir","task_category":"polyglot","plugin_stack":[],"behavior_mode":"factory"}
04ff38e1ed0949dfa0a321371b14c41b ↳ c4935728ce904db0aac1310f2f95e955 tool_call applied_plugins 0 ms {"tui":"opencode","count":0,"applied":[],"env_keys":[],"extra_args":[],"applied_count":0,"skipped_count":0}
6999d6db627742088c134a59d0b37ec5 ↳ c4935728ce904db0aac1310f2f95e955 container opencode-run:polyglot/go-http-handler-fix 259313 ms {"image":"codingagentbench/opencode:v1.15.10","model":"stepfun-ai/step-3.5-flash","base_url":"http://172.17.0.1:31415/v1","exit_code":0,"duration_s":238.716,"timed_out":false,"image_digest":"sha256:e56bdb69fb83ea2f8c81c06257f190fd4b5e91077e83d5536f722ff1b9c70275"}
c4935728ce904db0aac1310f2f95e955 adapter_run opencode:polyglot/go-http-handler-fix 259313 ms {"timeout_s":600,"plugin_stack":[],"exit_code":0}
3ee45885c3514e50b3b0c5507920fc31 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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[![CodingAgentBench: opencode × stepfun-ai/step-3.5-flash 91%](https://codingagentbench.com/badge/opencode/stepfun-ai/step-3.5-flash/polyglot/go-http-handler-fix.svg)](https://codingagentbench.com/cell/opencode/stepfun-ai/step-3.5-flash/polyglot/go-http-handler-fix)
HTML / iframe
<a href="https://codingagentbench.com/cell/opencode/stepfun-ai/step-3.5-flash/polyglot/go-http-handler-fix"><img src="https://codingagentbench.com/badge/opencode/stepfun-ai/step-3.5-flash/polyglot/go-http-handler-fix.svg" alt="CodingAgentBench: opencode × stepfun-ai/step-3.5-flash 91%" /></a>
CodingAgentBench: opencode × stepfun-ai/step-3.5-flash 91%