Agent Usage
A public ledger of how I split work across Claude, Codex, and the rest of my agent stack. This page is rendered directly from the same serverless API that powers my personal usage tracking(TUT). Estimated cost is derived from current models.dev base rates.
Updated through Mar 20, 2026
Whole-stack footprint
1.2Btotal tokens
14,274 agent events from Oct 9, 2025 to Mar 20, 2026. Cache reads contribute 87.3%, which says more about how much context gets reused than a plain request count ever could. Current published base rates put the archive at about $972.26.
Quick read
Estimated API cost
$972.26
Based on current models.dev base rates for 100% of tracked tokens.
Leaders
Source: Codex
Provider: OpenAI
Model: gpt-5.4
Events
14,274
All recorded runs
Cache ratio
87.3%
Cache read / total
Range start
Oct 9, 2025
First tracked event
Range end
Mar 20, 2026
Most recent event
Token composition
A split between input, output, cache read, and cache write volume.
86.5M
7.2% of total
7.1M
0.6% of total
1B
87.3% of total
59.4M
4.9% of total
Sources
Which agent surfaces get the most token volume.
01Codex
7,302 runs
642M
53.4%
02Claude Code
6,950 runs
559.1M
46.5%
03OpenCode
22 runs
297K
0%
Providers
The backend vendors carrying the workload.
01OpenAI
7,302 runs
642M
53.4% · $284.03 est.
02Anthropic
6,950 runs
559.1M
46.5% · $688.23 est.
03OpenCode
20 runs
274K
0% · $0.00 est.
04Google
2 runs
23K
0% · $0.00 est.
Top model lanes
Ranked by total token volume across each source, provider, and model combination.
| Model | Lane | Events | Total | Est. cost | Share |
|---|---|---|---|---|---|
gpt-5.4 | Codex OpenAI | 2,401 | 281.5M | $157.14 | 23.4% |
anthropic/claude-opus-4.6 | Claude Code Anthropic | 1,231 | 142.6M | $102.48 | 11.9% |
gpt-5.2 | Codex OpenAI | 1,988 | 141.7M | $50.48 | 11.8% |
gpt-5.2-codex | Codex OpenAI | 1,999 | 130.8M | $49.61 | 10.9% |
claude-opus-4-5-20251101 | Claude Code Anthropic | 1,161 | 112M | $172.20 | 9.3% |
anthropic/claude-4.6-opus-20260205 | Claude Code Anthropic | 1,128 | 98.7M | $117.86 | 8.2% |
gpt-5.3-codex | Codex OpenAI | 822 | 86.3M | $26.07 | 7.2% |
claude-sonnet-4-5-20250929 | Claude Code Anthropic | 1,002 | 57.8M | $86.25 | 4.8% |
claude-opus-4-6 | Claude Code Anthropic | 651 | 45.9M | $73.72 | 3.8% |
claude-sonnet-4-6 | Claude Code Anthropic | 405 | 35.8M | $109.72 | 3% |
anthropic/claude-sonnet-4.6 | Claude Code Anthropic | 228 | 23M | $9.73 | 1.9% |
claude-haiku-4-5-20251001 | Claude Code Anthropic | 587 | 22.9M | $9.61 | 1.9% |