zen: update claude prices

Author: fwang

packages/web/src/content/docs/zen.mdx

@@ -137,12 +137,10 @@ We support a pay-as-you-go model. Below are the prices **per 1M tokens**.
 | Kimi K2 Thinking                  | $0.40  | $2.50   | -           | -            |
 | Kimi K2                           | $0.40  | $2.50   | -           | -            |
 | Qwen3 Coder 480B                  | $0.45  | $1.50   | -           | -            |
-| Claude Opus 4.6 (≤ 200K tokens)   | $5.00  | $25.00  | $0.50       | $6.25        |
-| Claude Opus 4.6 (> 200K tokens)   | $10.00 | $37.50  | $1.00       | $12.50       |
+| Claude Opus 4.6                   | $5.00  | $25.00  | $0.50       | $6.25        |
 | Claude Opus 4.5                   | $5.00  | $25.00  | $0.50       | $6.25        |
 | Claude Opus 4.1                   | $15.00 | $75.00  | $1.50       | $18.75       |
-| Claude Sonnet 4.6 (≤ 200K tokens) | $3.00  | $15.00  | $0.30       | $3.75        |
-| Claude Sonnet 4.6 (> 200K tokens) | $6.00  | $22.50  | $0.60       | $7.50        |
+| Claude Sonnet 4.6                 | $3.00  | $15.00  | $0.30       | $3.75        |
 | Claude Sonnet 4.5 (≤ 200K tokens) | $3.00  | $15.00  | $0.30       | $3.75        |
 | Claude Sonnet 4.5 (> 200K tokens) | $6.00  | $22.50  | $0.60       | $7.50        |
 | Claude Sonnet 4 (≤ 200K tokens)   | $3.00  | $15.00  | $0.30       | $3.75        |