Initial upload: 175 traces with subagents, v5-only + ≥20 main turns + CC ≥ 2.1.139

.gitattributes

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 # Video files - compressed
 *.mp4 filter=lfs diff=lfs merge=lfs -text
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+traces.jsonl filter=lfs diff=lfs merge=lfs -text

README.md

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+---
+license: apache-2.0
+pretty_name: CC Traces — Weka, With Subagents, v5 only (May 19 2026)
+task_categories:
+  - text-generation
+tags:
+  - llm
+  - inference
+  - benchmarking
+  - kv-cache
+  - agentic
+  - multi-turn
+  - claude
+  - subagents
+size_categories:
+  - n<1K
+configs:
+  - config_name: default
+    data_files:
+      - split: train
+        path: traces.jsonl
+---
+
+# CC Traces — Weka, With Subagents, v5 only (May 19 2026)
+
+A collection of **175 multi-turn agentic traces** drawn from real production
+traffic against the Claude Code CLI ≥ 2.1.139. Each trace captures the full
+request/response sequence of a single agent session, including per-request
+KV block hashes AND the original sub-agent fan-out structure (Task-tool
+spawned sub-agents grouped into `WekaSubagentEntry` blocks).
+
+Use this dataset when you want to:
+- Simulate the full agentic-coding workload including parallel Task-tool
+  sub-agent fan-out
+- Study sub-agent dispatch patterns, instance counts, durations
+- Replay against an inference engine that should see the same concurrent-
+  request structure a real Claude Code session generates
+
+Filters:
+
+1. **v5 only.** Every replayable request in every included session has
+   `trace_version = 5` (the latest proxy schema, o200k_base tokenizer).
+   Sessions containing any earlier-format request are excluded entirely.
+2. **≥ 20 main-agent turns.** Per-trace main-agent stream (the would-be
+   no-subagents stream) must have at least 20 turns. Sub-agent fan-out
+   is on top of that.
+3. **CC ≥ 2.1.139.** Every replayable request in every included session
+   originated from a Claude Code CLI build at version 2.1.139 or newer.
+
+- **Traces:** 175
+- **Top-level entries:** 39,370 (38,368 main turns + 1,002 subagent groups)
+- **Sub-agent inner requests:** 35,458
+- **Total individual model requests:** 73,826
+- **Models:** `claude-opus-4-7` (70,643 req), `claude-opus-4-6` (2,138 req), `claude-haiku-4-5-20251001` (949 req), `claude-sonnet-4-6` (96 req)
+- **KV block size:** 64 tokens
+- **Hash scope:** `local` — block hash IDs are only comparable *within*
+  a single trace; they are not a global content-addressable identity.
+
+## Important: tokenizer caveat
+
+The `in` field on each request and the `hash_ids` array are both
+measured in **the proxy's tokenizer** (`o200k_base`, GPT-4o family).
+Anthropic typically reports ~60 % of the o200k token count for the same
+content. So the ISL numbers below are larger than what the Anthropic
+API would have billed for the same prompt — but they're self-consistent
+between `in` and `hash_ids`, which is what matters for KV-cache replay
+simulation.
+
+## What's in each trace
+
+Top-level trace fields:
+
+| field           | type             | description                                         |
+|-----------------|------------------|-----------------------------------------------------|
+| `id`            | str              | Trace identifier (the proxy session id)             |
+| `models`        | list[str]        | Models used by the trace                            |
+| `block_size`    | int              | KV block size used to derive `hash_ids` (64)        |
+| `hash_id_scope` | str              | `local` — hash IDs are per-trace, not global        |
+| `requests`      | list[object]     | Ordered list of per-request records OR `WekaSubagentEntry` groups |
+
+Each entry in `requests` is one of two shapes:
+
+### Main-agent request (`type: "n"` or `"s"`)
+
+| field         | type      | description                                                              |
+|---------------|-----------|--------------------------------------------------------------------------|
+| `t`           | float     | Seconds since start of trace                                             |
+| `type`        | str       | `n` (non-streaming) or `s` (streaming)                                   |
+| `model`       | str       | Target model for this request                                            |
+| `in`          | int       | Effective prompt tokens covered by `hash_ids` (proxy tokenizer)          |
+| `out`         | int       | Output tokens (Anthropic-reported)                                       |
+| `hash_ids`    | list[int] | Per-trace local block-hash IDs for the input, one per 64-token block     |
+| `api_time`    | float     | End-to-end server time for this call (seconds)                           |
+| `think_time`  | float?    | Wall-clock gap from previous request's end (seconds)                     |
+| `ttft`        | float?    | Time to first token (streaming requests only)                            |
+
+### Sub-agent group (`type: "subagent"`)
+
+| field           | type           | description                                            |
+|-----------------|----------------|--------------------------------------------------------|
+| `t`             | float          | Start time (seconds since trace start)                 |
+| `type`          | str            | Always `"subagent"`                                    |
+| `agent_id`      | str            | Stable per-trace sub-agent instance id (slug + suffix) |
+| `subagent_type` | str            | Sub-agent label (`"Subagent"` for Claude Code ≥ 2.1.139, else the original proxy label) |
+| `duration_ms`   | int            | Wall-clock span first→last inner request              |
+| `total_tokens`  | int            | Sum of `in + out` across inner requests                |
+| `tool_use_count`| null           | Not tracked in the proxy DB                            |
+| `status`        | str            | Always `"completed"`                                   |
+| `requests`      | list[object]   | Inner main-shape entries (type `n` — sub-agents are non-streaming) |
+| `models`        | list[str]      | Distinct models used inside this sub-agent run         |
+
+Sub-agent groups are emitted at the position of the first inner request
+in the chronological stream. Their inner requests have absolute `t`
+values (not relative to the group start), making sub-agent and main-
+agent timelines directly interleavable for replay.
+
+`hash_ids` make the dataset unusually useful for KV-cache work: the
+contiguous common prefix between turn *t* and turn *t − 1* exactly
+measures the portion of the input that a local prefix cache would be
+able to reuse. The same accounting applies to sub-agent inner requests
+within their group, and to the dispatching parent request that
+triggered them.
+
+## Summary statistics
+
+Across **all** requests (main + sub-agent inner = 37,766 requests):
+
+|                              |   p50    |   p75    |   p90    |   p95    |   p99    |   mean   |
+|------------------------------|---------:|---------:|---------:|---------:|---------:|---------:|
+| ISL (tokens)                 |  100,902 |  229,982 |  443,856 |  580,438 |  803,019 |  172,848 |
+| OSL (tokens)                 |      224 |      478 |    1,150 |    1,907 |    5,461 |      530 |
+| Top entries/trace            |      115 |        — |        — |      678 |    1,141 |      231 |
+
+## Plots
+
+### Main-agent stream
+
+Histograms across all 21,566 main-agent turns (sub-agent groups skipped).
+Same view as the [no-subagents sibling](https://huggingface.co/datasets/semianalysisai/cc-traces-weka-no-subagents-051826) — the two datasets share an identical main-agent stream.
+
+![Main-stream distributions — log x](plots/distributions_log.png)
+![Main-stream distributions — linear x](plots/distributions_linear.png)
+
+### Sub-agent fan-out analysis
+
+Histograms across all 618 sub-agent groups (and their 16,200 inner requests). Companion to the main-stream plots — answers questions about how often sub-agents are spawned, how deep their tool-loops go, how long they take, and how much intra-group prefix cache reuse exists.
+
+![Sub-agent distributions — log x](plots/subagent_distributions_log.png)
+![Sub-agent distributions — linear x](plots/subagent_distributions_linear.png)
+
+Six panels:
+
+1. **Sub-agent groups per trace** — distribution of how many distinct sub-agent invocations each session spawns
+2. **Inner requests per group** — depth of each sub-agent's tool-use loop
+3. **Group wall-clock duration** — first→last inner span (seconds)
+4. **Group total tokens** — `Σ(in + out)` across each group's inner requests
+5. **Inner-request ISL** — per-call input length INSIDE sub-agent loops (smaller than main-agent turns because sub-agents work on focused sub-problems with trimmed context)
+6. **Intra-group cache hit rate** — for each non-first inner request, fraction of `hash_ids` already seen in earlier inners of the SAME group. Captures how much KV-cache reuse a local prefix cache would get out of a sub-agent's tool-use loop (typically high — sub-agents iterate on a stable prompt)
+
+## Model composition
+
+| model | requests (main + subagent inner) |
+|-------|---------:|
+| `claude-opus-4-7` | 36,637 |
+| `claude-haiku-4-5-20251001` | 702 |
+| `claude-opus-4-6` | 343 |
+| `claude-sonnet-4-6` | 84 |
+
+## Source
+
+Same proxy → weka pipeline as the
+[no-subagents sibling](https://huggingface.co/datasets/semianalysisai/cc-traces-weka-no-subagents-051826),
+just without the post-step that strips `WekaSubagentEntry` blocks.
+
+  1. `utils/sample_proxy_traces.py --min-trace-version 5 --min-main-turns 20 --privacy-mode anon`
+  2. `utils/proxy_to_weka.py` (subagent grouping per the dashboard's
+     algorithm)
+  3. Concatenate the resulting weka JSONs into `traces.jsonl` — one trace
+     per line.
+
+The same-96-trace contract with the no-subagents sibling makes the two
+variants safe to A/B compare for any benchmark that cares about
+sub-agent fan-out's impact on cache-hit-rate or throughput.

traces.jsonl

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