semianalysisai/cc-traces-weka-062126-256k

WekaTrace corpus derived from SemiAnalysis Claude Code proxy traces. Built 2026-06-21 17:49:45 UTC via utils/agentic/build_weka_hf_dataset.py.

Derived from semianalysisai/cc-traces-weka-062126 by applying the 256k per-request cap and preserving the surviving requests' relative timestamps.

Filters

• Trace version: exactly v7
• min Anthropic requests per session: 20
• Claude Code CLI ≥ 2.1.139 (every row)
• peak concurrent sub-agent groups ≤ 10
• Non-image rows only (image content excluded at source)
• Classifier calls excluded (max_tokens<=64 AND no tools → SUGGESTION MODE, title-gen, Security Monitor)
• Exact-duplicate proxy rows deduped by (timestamp, model, in, out, dur_ms, agent_id)
• Dynamic-workflow-bug sessions excluded: Claude Code CLI < 2.1.174 emitted dynamic-workflow subagents without a subagent-label header, so they appear as many interleaved unlabeled trajectories in one session. Dropped when peak concurrent unlabeled multi-turn trajectories ≥ 3 (changelog 2.1.174).
• 256k per-request cap (see 256k filter rule below)

256k filter rule

• Per-request input + output ≤ 256,000 tokens. Applied at request granularity, not conversation. Main-agent and sub-agent inner requests are evaluated independently.
• Sub-agent groups where every inner request was filtered → entire group dropped.
• Sub-agent groups with only some inners filtered → partial group kept (surviving inners retained).
• Timeline preservation: surviving request t values keep their original relative offsets, including sub-agent overlap. If the first request was filtered, all surviving timestamps are shifted by one uniform offset so the earliest survivor starts at t = 0.

Stats

traces:             393
main_turns:          28,444
subagent_groups:           1,697
subagent_inner_requests:          39,822
total_model_requests:          68,266
total_input_tokens:   6,891,228,864
total_output_tokens:      58,728,807

Distribution plots

Main-agent stream

Sub-agent fan-out

Source script

python utils/agentic/sample_proxy_traces.py --out '<workdir>/proxy' --sampling top --min-trace-version 7 --max-trace-version 7 --min-requests 20 --require-cli-min 2.1.139 --max-parallel-subagents 10 --exclude-dynamic-workflow-bug

Loader plugin

Load in aiperf via:

--public-dataset semianalysis_cc_traces_weka_with_subagents_256k