OpenRouter の公開モデル一覧から、有料モデルの入力単価（USD / 100万トークン）の中央値を毎日取っています。 平均ではなく中央値を使うのは、極端に高い・安いモデルに引きずられないためです。 算出方法の詳細
| 日付 | 入力 中央値 | 第1四分位 | 第3四分位 | 出力 中央値 | 対象モデル数 |
|---|---|---|---|---|---|
| 2026-10-27 | $0.50 | $0.15 | $1.75 | $2.00 | 435 |
| 2026-10-25 | $0.45 | $0.15 | $1.75 | $2.00 | 440 |
| 2026-10-24 | $0.45 | $0.15 | $1.75 | $2.00 | 440 |
| 2026-10-23 | $0.50 | $0.15 | $1.69 | $2.00 | 442 |
| 2026-10-22 | $0.50 | $0.15 | $1.50 | $2.00 | 441 |
| 2026-10-21 | $0.50 | $0.15 | $1.56 | $2.00 | 440 |
| 2026-10-20 | $0.50 | $0.15 | $1.50 | $2.00 | 443 |
| 2026-10-18 | $0.50 | $0.15 | $1.50 | $2.00 | 445 |
| 2026-10-17 | $0.50 | $0.15 | $1.50 | $2.00 | 445 |
| 2026-10-16 | $0.50 | $0.15 | $1.75 | $2.00 | 441 |
| 2026-10-15 | $0.50 | $0.15 | $1.75 | $2.00 | 440 |
| 2026-10-14 | $0.50 | $0.15 | $1.75 | $2.00 | 439 |
| 2026-10-13 | $0.50 | $0.15 | $1.50 | $2.00 | 433 |
| 2026-10-12 | $0.50 | $0.15 | $1.50 | $2.00 | 432 |
| 2026-10-11 | $0.50 | $0.15 | $1.50 | $2.00 | 432 |
| 2026-10-10 | $0.50 | $0.15 | $1.50 | $2.00 | 432 |
| 2026-10-09 | $0.50 | $0.15 | $1.50 | $2.00 | 443 |
| 2026-10-08 | $0.45 | $0.15 | $1.50 | $2.00 | 440 |
| 2026-10-07 | $0.50 | $0.15 | $1.50 | $2.00 | 439 |
| 2026-10-06 | $0.50 | $0.15 | $1.50 | $2.00 | 437 |
| 2026-10-04 | $0.50 | $0.15 | $1.50 | $2.00 | 437 |
| 2026-10-03 | $0.50 | $0.15 | $1.50 | $2.00 | 437 |
| 2026-10-02 | $0.46 | $0.15 | $1.50 | $2.00 | 437 |
| 2026-10-01 | $0.50 | $0.15 | $1.50 | $2.00 | 438 |
| 2026-09-30 | $0.50 | $0.15 | $1.50 | $2.00 | 438 |
| 2026-09-29 | $0.48 | $0.15 | $1.50 | $2.00 | 434 |
| 2026-09-27 | $0.46 | $0.15 | $1.50 | $2.00 | 431 |
| 2026-09-26 | $0.50 | $0.15 | $1.50 | $2.00 | 431 |
| 2026-09-25 | $0.50 | $0.15 | $1.50 | $2.00 | 432 |
| 2026-09-24 | $0.50 | $0.15 | $1.50 | $2.00 | 431 |
arXiv の公開APIで、主要5分野に週内に投稿された本数を数えています。 週の区切りは月曜0時（UTC）で、終わった週だけを記録します。
| 週（開始） | cs.AI | cs.CL | cs.LG | cs.CV | cs.RO | 合計 |
|---|---|---|---|---|---|---|
| 2026-10-12 | 1491 | 889 | 1593 | 900 | 505 | 5378 |
| 2026-10-05 | 1523 | 726 | 1754 | 970 | 623 | 5596 |
| 2026-09-28 | 2009 | 852 | 2075 | 1144 | 606 | 6686 |
| 2026-09-21 | 882 | 390 | 817 | 566 | 449 | 3104 |
| 2026-08-31 | 941 | 592 | 768 | 612 | 205 | 3118 |
| 2026-08-24 | 860 | 456 | 674 | 508 | 194 | 2692 |
| 2026-08-17 | 946 | 407 | 803 | 611 | 244 | 3011 |