Compute Token Stats (Rust Ultra)

[Created by Codex: 019beb87-b904-7a81-a7c9-5b5d5575d2f7 2026-01-23] [Edited by Claude: 9d1228e9-aabe-4ab3-9b9c-c0c1d1f64ebc 2026-01-27]

⚠️ CRITICAL: Agent Instructions

If the user asked you to load this skill, you MUST use it for token cost computation.

1. ALWAYS use the Rust binaries - they are ultra-fast and purpose-built for this task
2. NEVER write custom Python to parse tokens - the Rust tool already does this
3. If you think you need Python, STOP and ask the user first - 99% of the time the answer is NO
4. These binaries are PIPE-ONLY - they read from stdin, not files directly

⚠️ NEVER RUN STANDALONE - WILL HANG!

# WRONG - will hang waiting for stdin forever!
/tmp/.claude/skills/compute-token-stats-rust-ultra/rust/target/release/token_costs

# CORRECT - always pipe data to it
cat file.jsonl | /tmp/.claude/skills/compute-token-stats-rust-ultra/rust/target/release/token_costs

Filtering by SID

To compute tokens for specific sessions, filter first then pipe:

# Filter by single SID
grep '"sid":"abc123"' ~/centralized-logs/claude/sse_lines.jsonl | \
  /tmp/.claude/skills/compute-token-stats-rust-ultra/rust/target/release/claude_token_costs

# Filter by multiple SIDs (use grep -F with file)
grep -F -f /tmp/sids.txt ~/centralized-logs/codex/sse_lines.jsonl | \
  /tmp/.claude/skills/compute-token-stats-rust-ultra/rust/target/release/token_costs

---

Compute token totals + estimated costs from massive JSONL SSE logs:

• Codex:

  ~/centralized-logs/codex/sse_lines.jsonl

• Claude:

  ~/centralized-logs/claude/sse_lines.jsonl

This skill includes:

• Rust Ultra (streaming, byte-scan, no JSON DOM):

  rust/

  →

  token_costs

  +

  claude_token_costs

• Python anchor (ground truth):

  python/run_compute_token_costs_anchor.py

  → runs

  ~/swe/token-computation/compute_token_costs.py

• Python fast (byte-scan):

  python/compute_{codex,claude}_token_costs_fast_pipe.py

Build (Rust Ultra)

cd /tmp/.claude/skills/compute-token-stats-rust-ultra/rust && \
  cargo build --release --bins

Run (Rust Ultra)

Codex:

cat ~/centralized-logs/codex/sse_lines.jsonl | \
  /tmp/.claude/skills/compute-token-stats-rust-ultra/rust/target/release/token_costs

Claude:

cat ~/centralized-logs/claude/sse_lines.jsonl | \
  /tmp/.claude/skills/compute-token-stats-rust-ultra/rust/target/release/claude_token_costs

Run (Python anchor / ground truth)

Generate a pricing snapshot (recommended; makes runs reproducible):

python /Users/sotola/swe/token-computation/pull_pricing.py \
  --providers openai,anthropic --timeout 20 --snapshot-dir ~/centralized-logs/pull-pricing/snapshots

Then run:

python /tmp/.claude/skills/compute-token-stats-rust-ultra/python/run_compute_token_costs_anchor.py \
  --codex ~/centralized-logs/codex/sse_lines.jsonl \
  --claude ~/centralized-logs/claude/sse_lines.jsonl \
  --pricing-snapshot ~/centralized-logs/pull-pricing/snapshots/<pick-one>.json

Quick benchmark + cost diff (%)

This compares Rust Ultra (streaming stdin) vs Python anchor on the same datasets and prints:

• seconds
• lines/sec (Python uses file line count / wall time)
• cost diff (%)

python /tmp/.claude/skills/compute-token-stats-rust-ultra/python/bench_rust_vs_anchor.py

Notes on “unknown” Codex sessions

When

turn.session_configured

is missing for some

sid

(log truncation / invalid state machine), per-

sid

model attribution is unknowable.

• The anchor (

  compute_token_costs.py

  ) prices Codex totals with a single detected

  codex.model

  .
• Rust Ultra keeps per-model attribution when possible; for

  (unknown)

  it prices using the detected pricing model to stay consistent with the anchor.