From a820863e8bdaafe336213d00529d9295bbf1f1d3 Mon Sep 17 00:00:00 2001
From: Danny Avila <danny@librechat.ai>
Date: Tue, 26 Aug 2025 23:33:56 -0400
Subject: [PATCH] =?UTF-8?q?=F0=9F=92=B2=20fix:=20Prevent=20Single-dollar?=
 =?UTF-8?q?=20LaTeX=20for=20abbrev.=20Currency=20(K,=20M,=20B)=20(#9293)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 client/src/utils/latex.spec.ts | 12 ++++++++++++
 client/src/utils/latex.ts      |  3 ++-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/client/src/utils/latex.spec.ts b/client/src/utils/latex.spec.ts
index d223edbd8e..f044f4de53 100644
--- a/client/src/utils/latex.spec.ts
+++ b/client/src/utils/latex.spec.ts
@@ -239,4 +239,16 @@ y$ which spans lines`;
     const expected = 'Bitcoin: \\$0.00001234, Gas: \\$3.999, Rate: \\$1.234567890';
     expect(preprocessLaTeX(content)).toBe(expected);
   });
+
+  test('escapes abbreviated currency notation', () => {
+    const content = '$250k is 25% of $1M';
+    const expected = '\\$250k is 25% of \\$1M';
+    expect(preprocessLaTeX(content)).toBe(expected);
+  });
+
+  test('handles various abbreviated currency formats', () => {
+    const content = 'Revenue: $5M to $10M, funding: $1.5B, price: $5K';
+    const expected = 'Revenue: \\$5M to \\$10M, funding: \\$1.5B, price: \\$5K';
+    expect(preprocessLaTeX(content)).toBe(expected);
+  });
 });
diff --git a/client/src/utils/latex.ts b/client/src/utils/latex.ts
index 11438245c1..4467c2a5e3 100644
--- a/client/src/utils/latex.ts
+++ b/client/src/utils/latex.ts
@@ -3,7 +3,8 @@ const MHCHEM_CE_REGEX = /\$\\ce\{/g;
 const MHCHEM_PU_REGEX = /\$\\pu\{/g;
 const MHCHEM_CE_ESCAPED_REGEX = /\$\\\\ce\{[^}]*\}\$/g;
 const MHCHEM_PU_ESCAPED_REGEX = /\$\\\\pu\{[^}]*\}\$/g;
-const CURRENCY_REGEX = /(?<![\\$])\$(?!\$)(?=\d+(?:,\d{3})*(?:\.\d+)?(?:\s|$|[^a-zA-Z\d]))/g;
+const CURRENCY_REGEX =
+  /(?<![\\$])\$(?!\$)(?=\d+(?:,\d{3})*(?:\.\d+)?(?:[KMBkmb])?(?:\s|$|[^a-zA-Z\d]))/g;
 const SINGLE_DOLLAR_REGEX = /(?<!\\)\$(?!\$)((?:[^$\n]|\\[$])+?)(?<!\\)(?<!`)\$(?!\$)/g;
 
 /**