diff --git a/bun.lock b/bun.lock
index 9c40d0243..e9086915d 100644
--- a/bun.lock
+++ b/bun.lock
@@ -11,7 +11,7 @@
     },
     "packages/cli": {
       "name": "base44",
-      "version": "0.0.50",
+      "version": "0.0.56",
       "bin": {
         "base44": "./bin/run.js",
       },
@@ -29,6 +29,7 @@
         "@types/json-schema": "^7.0.15",
         "@types/jsonwebtoken": "^9.0.10",
         "@types/lodash": "^4.17.24",
+        "@types/ms": "^2.1.0",
         "@types/multer": "^2.0.0",
         "@types/node": "^22.10.5",
         "@vercel/detect-agent": "^1.1.0",
@@ -50,6 +51,7 @@
         "jsonwebtoken": "^9.0.3",
         "ky": "^1.14.2",
         "lodash": "^4.17.23",
+        "ms": "^2.1.3",
         "multer": "^2.0.0",
         "nanoid": "^5.1.6",
         "open": "^11.0.0",
diff --git a/packages/cli/package.json b/packages/cli/package.json
index b81f167b7..7447a84fb 100644
--- a/packages/cli/package.json
+++ b/packages/cli/package.json
@@ -52,10 +52,10 @@
         "@types/json-schema": "^7.0.15",
         "@types/jsonwebtoken": "^9.0.10",
         "@types/lodash": "^4.17.24",
+        "@types/ms": "^2.1.0",
         "@types/multer": "^2.0.0",
         "@types/node": "^22.10.5",
         "@vercel/detect-agent": "^1.1.0",
-        "outdent": "^0.8.0",
         "chalk": "^5.6.2",
         "chokidar": "^5.0.0",
         "commander": "^12.1.0",
@@ -70,15 +70,18 @@
         "globby": "^16.1.0",
         "http-proxy-middleware": "^3.0.5",
         "json-schema-to-typescript": "^15.0.4",
-        "jsonwebtoken": "^9.0.3",
         "json5": "^2.2.3",
+        "jsonwebtoken": "^9.0.3",
         "ky": "^1.14.2",
         "lodash": "^4.17.23",
+        "ms": "^2.1.3",
         "multer": "^2.0.0",
         "nanoid": "^5.1.6",
         "open": "^11.0.0",
+        "outdent": "^0.8.0",
         "p-wait-for": "^6.0.0",
         "posthog-node": "5.21.2",
+        "qs": "^6.12.3",
         "socket.io": "^4.8.3",
         "strip-ansi": "^7.1.2",
         "tar": "^7.5.4",
@@ -86,7 +89,6 @@
         "typescript": "^5.7.2",
         "vitest": "^4.0.16",
         "yaml": "^2.8.2",
-        "qs": "^6.12.3",
         "zod": "^4.3.5"
     },
     "engines": {
diff --git a/packages/cli/src/cli/commands/project/logs.ts b/packages/cli/src/cli/commands/project/logs.ts
index 522feea5f..d8938ed1a 100644
--- a/packages/cli/src/cli/commands/project/logs.ts
+++ b/packages/cli/src/cli/commands/project/logs.ts
@@ -1,5 +1,6 @@
 import type { Command } from "commander";
 import { Option } from "commander";
+import ms, { type StringValue } from "ms";
 import type { CLIContext, RunCommandResult } from "@/cli/types.js";
 import { Base44Command } from "@/cli/utils/index.js";
 import { ApiError, InvalidInputError } from "@/core/errors.js";
@@ -70,6 +71,10 @@ function parseFunctionNames(option: string | undefined): string[] {
 }
 
 function normalizeDatetime(value: string): string {
+  const duration = ms(value as StringValue);
+  if (duration !== undefined) {
+    return new Date(Date.now() - duration).toISOString();
+  }
   if (/Z$|[+-]\d{2}:\d{2}$/.test(value)) return value;
   return `${value}Z`;
 }
@@ -143,8 +148,9 @@ async function fetchLogsForFunctions(
       throw error;
     }
 
-    const entries = logs.map((entry) => normalizeLogEntry(entry, functionName));
-    allEntries.push(...entries);
+    allEntries.push(
+      ...logs.map((entry) => normalizeLogEntry(entry, functionName)),
+    );
   }
 
   // When fetching multiple functions, merge-sort the combined results
@@ -216,7 +222,11 @@ async function logsAction(
     ? `${JSON.stringify(entries, null, 2)}\n`
     : formatLogs(entries);
 
-  return { outroMessage: "Fetched logs", stdout: logsOutput };
+  const shouldOutputOutroMessage = !options.json;
+  return {
+    outroMessage: shouldOutputOutroMessage ? "Fetched logs" : undefined,
+    stdout: logsOutput,
+  };
 }
 
 export function getLogsCommand(): Command {
@@ -228,12 +238,12 @@ export function getLogsCommand(): Command {
     )
     .option(
       "--since <datetime>",
-      "Show logs from this time (ISO format)",
+      "Show logs from this time. ISO datetime or relative shorthand (e.g. 1h, 30m, 2d)",
       normalizeDatetime,
     )
     .option(
       "--until <datetime>",
-      "Show logs until this time (ISO format)",
+      "Show logs until this time. ISO datetime or relative shorthand (e.g. 1h, 30m, 2d)",
       normalizeDatetime,
     )
     .addOption(
@@ -245,5 +255,6 @@ export function getLogsCommand(): Command {
     .addOption(
       new Option("--order <order>", "Sort order").choices(["asc", "desc"]),
     )
+    .option("--json", "Output as JSON (clean stdout, safe to pipe to jq)")
     .action(logsAction);
 }
diff --git a/packages/cli/tests/cli/logs.spec.ts b/packages/cli/tests/cli/logs.spec.ts
index ea0a87f09..ddcc71687 100644
--- a/packages/cli/tests/cli/logs.spec.ts
+++ b/packages/cli/tests/cli/logs.spec.ts
@@ -1,4 +1,4 @@
-import { describe, it } from "vitest";
+import { describe, expect, it } from "vitest";
 import { fixture, setupCLITests } from "./testkit/index.js";
 
 describe("logs command", () => {
@@ -287,4 +287,38 @@ describe("logs command", () => {
 
     t.expectResult(result).toSucceed();
   });
+
+  it("outputs valid JSON with --json", async () => {
+    await t.givenLoggedInWithProject(fixture("basic"));
+    t.api.mockFunctionLogs("my-function", [
+      { time: "2024-01-15T10:30:00.000Z", level: "info", message: "Hello" },
+    ]);
+
+    const result = await t.run("logs", "--function", "my-function", "--json");
+
+    t.expectResult(result).toSucceed();
+    const stdout = result.stdout ?? "";
+    const jsonStart = stdout.indexOf("[");
+    const parsed = JSON.parse(stdout.slice(jsonStart));
+    expect(parsed).toHaveLength(1);
+    expect(parsed[0].message).toContain("Hello");
+  });
+
+  it("accepts relative time shortcuts for --since", async () => {
+    await t.givenLoggedInWithProject(fixture("basic"));
+    t.api.mockFunctionLogs("my-function", [
+      { time: "2024-01-15T10:30:00.000Z", level: "info", message: "Recent" },
+    ]);
+
+    const result = await t.run(
+      "logs",
+      "--function",
+      "my-function",
+      "--since",
+      "1h",
+    );
+
+    t.expectResult(result).toSucceed();
+    t.expectResult(result).toContain("Recent");
+  });
 });