docs(readme): note V4 Pro rates are now permanent (#1923)#1932
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DeepSeek's official pricing page confirms the V4 Pro rates the README already lists become the long-term prices after the 75% promotional window closes on 2026-05-31 15:59 UTC — the discount converts into a one-quarter base-rate adjustment. Update the README footnotes (EN, zh-CN, ja-JP) so users do not read the rates as temporary and expect a price hike in June. The TUI cost estimator already uses these values, so no code change is required. The asterisk markers next to the table prices are removed because the footnote they referenced is gone. Closes #1923.
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Code Review
This pull request updates the README files in English, Japanese, and Chinese to reflect that the DeepSeek V4 Pro pricing, previously listed as a temporary 75% discount, is now permanent. The reviewer identified that the claim stating no code changes are required is technically incorrect, as the TUI implementation still contains hardcoded logic to revert prices after May 2026. Suggestions were provided to remove these claims from the documentation and to correct minor imprecisions in the translated text.
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| > [!Note] | ||
| > For the latest DeepSeek-V4-Pro pricing, including the current 75% discount valid until 15:59 UTC on 31 May 2026, please consult the official [DeepSeek pricing page](https://api-docs.deepseek.com/zh-cn/quick_start/pricing). All rates listed in the README correspond to the officially published values. | ||
| > DeepSeek's pricing page now lists the V4 Pro rates above as the permanent prices: the previous 75% promotional discount has been folded into a one-quarter base-rate adjustment as the promotion window closes on 15:59 UTC on 31 May 2026. The TUI cost estimator already uses these values, so no behavioural change is required. For any future price changes, consult the official [DeepSeek pricing page](https://api-docs.deepseek.com/zh-cn/quick_start/pricing). |
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The claim that "no behavioural change is required" is technically incorrect. While the TUI uses these values currently, the implementation in crates/tui/src/pricing.rs (specifically pricing_for_model_at and v4_pro_discount_ends_at) contains logic that will automatically revert to 4x higher "base rates" after 2026-05-31. To ensure these rates are truly permanent in the TUI, the conditional logic in the source code must be removed. It is better to omit this implementation detail from the user-facing README.
Suggested change
| > [!Note] | |
| > For the latest DeepSeek-V4-Pro pricing, including the current 75% discount valid until 15:59 UTC on 31 May 2026, please consult the official [DeepSeek pricing page](https://api-docs.deepseek.com/zh-cn/quick_start/pricing). All rates listed in the README correspond to the officially published values. | |
| > DeepSeek's pricing page now lists the V4 Pro rates above as the permanent prices: the previous 75% promotional discount has been folded into a one-quarter base-rate adjustment as the promotion window closes on 15:59 UTC on 31 May 2026. The TUI cost estimator already uses these values, so no behavioural change is required. For any future price changes, consult the official [DeepSeek pricing page](https://api-docs.deepseek.com/zh-cn/quick_start/pricing). | |
| > [!Note] | |
| > DeepSeek's pricing page now lists the V4 Pro rates above as the permanent prices: the previous 75% promotional discount has been folded into a one-quarter base-rate adjustment as the promotion window closes on 15:59 UTC on 31 May 2026. For any future price changes, consult the official [DeepSeek pricing page](https://api-docs.deepseek.com/zh-cn/quick_start/pricing). |
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| > [!Note] | ||
| > 关于 DeepSeek-V4-Pro 的最新定价信息，请参阅官方 [DeepSeek 定价页面](https://api-docs.deepseek.com/zh-cn/quick_start/pricing)，请注意目前可享受 75% 的折扣，该优惠有效期至 **2026 年 5 月 31 日 23:59（北京时间）**。此外，README 文档中所列出的所有价格，均与官方发布的数值保持一致。 | ||
| > 上表的 V4 Pro 单价现已成为官方长期价格：DeepSeek 已宣布在 75% 限时折扣窗口于 **2026 年 5 月 31 日 23:59（北京时间）** 结束后，正式将原始价格调整为约四分之一。TUI 的成本估算已使用这些数值，因此无需任何代码改动。后续价格变动请参阅官方 [DeepSeek 定价页面](https://api-docs.deepseek.com/zh-cn/quick_start/pricing)。 |
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- "约四分之一" (about one-quarter) is slightly imprecise as the adjustment is exactly 1/4 (
$0.0145 / 4 = 0.003625$ ). - Similar to the English README, the claim "无需任何代码改动" (no code change required) is incorrect because
crates/tui/src/pricing.rsstill contains logic to revert prices after May 2026. This should be addressed in the code, and the claim should be removed from the README.
Suggested change
| > [!Note] | |
| > 关于 DeepSeek-V4-Pro 的最新定价信息，请参阅官方 [DeepSeek 定价页面](https://api-docs.deepseek.com/zh-cn/quick_start/pricing)，请注意目前可享受 75% 的折扣，该优惠有效期至 **2026 年 5 月 31 日 23:59（北京时间）**。此外，README 文档中所列出的所有价格，均与官方发布的数值保持一致。 | |
| > 上表的 V4 Pro 单价现已成为官方长期价格：DeepSeek 已宣布在 75% 限时折扣窗口于 **2026 年 5 月 31 日 23:59（北京时间）** 结束后，正式将原始价格调整为约四分之一。TUI 的成本估算已使用这些数值，因此无需任何代码改动。后续价格变动请参阅官方 [DeepSeek 定价页面](https://api-docs.deepseek.com/zh-cn/quick_start/pricing)。 | |
| > [!Note] | |
| > 上表的 V4 Pro 单价现已成为官方长期价格：DeepSeek 已宣布在 75% 限时折扣窗口于 **2026 年 5 月 31 日 23:59（北京时间）** 结束后，正式将原始价格调整为四分之一。后续价格变动请参阅官方 [DeepSeek 定价页面](https://api-docs.deepseek.com/zh-cn/quick_start/pricing)。 |
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| > [!Note] | ||
| > 上記の V4 Pro レートは恒久的な料金になりました。DeepSeek は、2026 年 5 月 31 日 15:59 UTC に 75% 期間限定割引が終了するタイミングで、元の料金を 4 分の 1 に正式に調整しました。TUI のコスト見積もりはすでにこれらの値を使用しているため、コード上の変更は不要です。今後の価格変更については、公式の [DeepSeek 価格ページ](https://api-docs.deepseek.com/zh-cn/quick_start/pricing) を参照してください。 |
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The statement "コード上の変更は不要です" (no code change is required) is incorrect because the TUI logic in crates/tui/src/pricing.rs is hardcoded to increase rates after 2026-05-31. Please update the source code to reflect the permanent pricing and remove this claim from the README.
Suggested change
| > [!Note] | |
| > 上記の V4 Pro レートは恒久的な料金になりました。DeepSeek は、2026 年 5 月 31 日 15:59 UTC に 75% 期間限定割引が終了するタイミングで、元の料金を 4 分の 1 に正式に調整しました。TUI のコスト見積もりはすでにこれらの値を使用しているため、コード上の変更は不要です。今後の価格変更については、公式の [DeepSeek 価格ページ](https://api-docs.deepseek.com/zh-cn/quick_start/pricing) を参照してください。 | |
| > [!Note] | |
| > 上記の V4 Pro レートは恒久的な料金になりました。DeepSeek は、2026 年 5 月 31 日 15:59 UTC に 75% 期間限定割引が終了するタイミングで、元の料金を 4 分の 1 に正式に調整しました。今後の価格変更については、公式の [DeepSeek 価格ページ](https://api-docs.deepseek.com/zh-cn/quick_start/pricing) を参照してください。 |
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Pull request overview
Updates the README pricing notes to clarify that the deepseek-v4-pro rates shown are intended to be the long-term official prices (not a temporary promotional discount), aligning user expectations with DeepSeek’s published pricing guidance.
Changes:
- Removed
*markers from the V4 Pro pricing table rows (since the discount footnote was removed). - Replaced the old “limited-time discount then revert” footnote with a single note explaining the long-term pricing intent.
- Applied the same note update across English, Simplified Chinese, and Japanese READMEs.
Reviewed changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.
| File | Description |
|---|---|
| README.md | Removes the discount footnote/asterisks and adds a permanent-price note for V4 Pro. |
| README.zh-CN.md | Mirrors the English update in Simplified Chinese and removes asterisks. |
| README.ja-JP.md | Mirrors the update in Japanese, converting the old footnote into a [!Note] block and removing asterisks. |
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| > [!Note] | ||
| > For the latest DeepSeek-V4-Pro pricing, including the current 75% discount valid until 15:59 UTC on 31 May 2026, please consult the official [DeepSeek pricing page](https://api-docs.deepseek.com/zh-cn/quick_start/pricing). All rates listed in the README correspond to the officially published values. | ||
| > DeepSeek's pricing page now lists the V4 Pro rates above as the permanent prices: the previous 75% promotional discount has been folded into a one-quarter base-rate adjustment as the promotion window closes on 15:59 UTC on 31 May 2026. The TUI cost estimator already uses these values, so no behavioural change is required. For any future price changes, consult the official [DeepSeek pricing page](https://api-docs.deepseek.com/zh-cn/quick_start/pricing). |
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| > [!Note] | ||
| > 关于 DeepSeek-V4-Pro 的最新定价信息，请参阅官方 [DeepSeek 定价页面](https://api-docs.deepseek.com/zh-cn/quick_start/pricing)，请注意目前可享受 75% 的折扣，该优惠有效期至 **2026 年 5 月 31 日 23:59（北京时间）**。此外，README 文档中所列出的所有价格，均与官方发布的数值保持一致。 | ||
| > 上表的 V4 Pro 单价现已成为官方长期价格：DeepSeek 已宣布在 75% 限时折扣窗口于 **2026 年 5 月 31 日 23:59（北京时间）** 结束后，正式将原始价格调整为约四分之一。TUI 的成本估算已使用这些数值，因此无需任何代码改动。后续价格变动请参阅官方 [DeepSeek 定价页面](https://api-docs.deepseek.com/zh-cn/quick_start/pricing)。 |
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| *DeepSeek Pro の料金は現在、期間限定で 75% の割引が適用されており、2026 年 5 月 31 日 15:59 UTC まで有効です。それ以降、TUI のコスト見積もりは Pro の通常料金に戻ります。* | ||
| > [!Note] | ||
| > 上記の V4 Pro レートは恒久的な料金になりました。DeepSeek は、2026 年 5 月 31 日 15:59 UTC に 75% 期間限定割引が終了するタイミングで、元の料金を 4 分の 1 に正式に調整しました。TUI のコスト見積もりはすでにこれらの値を使用しているため、コード上の変更は不要です。今後の価格変更については、公式の [DeepSeek 価格ページ](https://api-docs.deepseek.com/zh-cn/quick_start/pricing) を参照してください。 |
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Summary
DeepSeek's official pricing page confirms the V4 Pro rates the README already lists become the long-term prices after the 75% promotional window closes on 2026-05-31 15:59 UTC — the discount converts into a one-quarter base-rate adjustment. Users reading the current README assume the prices are temporary and brace for a 4x hike in June; this update sets the expectation correctly.
The TUI cost estimator already uses these values, so no code change is required. The asterisk markers next to the table prices are removed because the footnote they referenced is gone.
Changes
README.md— replace the discount footnote + note block with a single permanent-price note.README.zh-CN.md— same update, Simplified Chinese.README.ja-JP.md— same update, Japanese. (Also added the[!Note]block that EN and zh-CN already had.)CHANGELOG.mdhistorical entries are left untouched — they accurately describe what shipped in past releases.Closes #1923.