diff --git a/.stats.yml b/.stats.yml
index 8659ab92..9ca0065e 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,2 +1,2 @@
 configured_endpoints: 15
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/togetherai%2FTogetherAI-4365478ddf8533c4aeced4c0be4bde57b5930a13385c7500da6e4eb493b2cbcc.yml
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/togetherai%2FTogetherAI-fe6fb14a0be4c133d8a105140bca7128149a2b762e763ad5e7c3b1e5909cc08b.yml
diff --git a/src/core.ts b/src/core.ts
index a437669e..ecb913d0 100644
--- a/src/core.ts
+++ b/src/core.ts
@@ -365,9 +365,13 @@ export abstract class APIClient {
       delete reqHeaders['content-type'];
     }
 
-    // Don't set the retry count header if it was already set or removed by the caller. We check `headers`,
-    // which can contain nulls, instead of `reqHeaders` to account for the removal case.
-    if (getHeader(headers, 'x-stainless-retry-count') === undefined) {
+    // Don't set the retry count header if it was already set or removed through default headers or by the
+    // caller. We check `defaultHeaders` and `headers`, which can contain nulls, instead of `reqHeaders` to
+    // account for the removal case.
+    if (
+      getHeader(defaultHeaders, 'x-stainless-retry-count') === undefined &&
+      getHeader(headers, 'x-stainless-retry-count') === undefined
+    ) {
       reqHeaders['x-stainless-retry-count'] = String(retryCount);
     }
 
diff --git a/src/resources/fine-tune.ts b/src/resources/fine-tune.ts
index 32f408ee..765b353b 100644
--- a/src/resources/fine-tune.ts
+++ b/src/resources/fine-tune.ts
@@ -114,6 +114,8 @@ export interface FineTune {
   wandb_project_name?: string;
 
   wandb_url?: string;
+
+  warmup_ratio?: number;
 }
 
 export namespace FineTune {
@@ -308,6 +310,12 @@ export interface FineTuneCreateParams {
    * API key for Weights & Biases integration
    */
   wandb_api_key?: string;
+
+  /**
+   * The percent of steps at the start of training to linearly increase the
+   * learning-rate.
+   */
+  warmup_ratio?: number;
 }
 
 export namespace FineTuneCreateParams {
diff --git a/tests/api-resources/fine-tune.test.ts b/tests/api-resources/fine-tune.test.ts
index 52e9e5bf..cdcfd5c2 100644
--- a/tests/api-resources/fine-tune.test.ts
+++ b/tests/api-resources/fine-tune.test.ts
@@ -33,6 +33,7 @@ describe('resource fineTune', () => {
       training_type: { type: 'Full' },
       validation_file: 'validation_file',
       wandb_api_key: 'wandb_api_key',
+      warmup_ratio: 0,
     });
   });
 
diff --git a/tests/index.test.ts b/tests/index.test.ts
index f2d29191..2fa9714a 100644
--- a/tests/index.test.ts
+++ b/tests/index.test.ts
@@ -295,6 +295,39 @@ describe('retries', () => {
     expect(capturedRequest!.headers as Headers).not.toHaveProperty('x-stainless-retry-count');
   });
 
+  test('omit retry count header by default', async () => {
+    let count = 0;
+    let capturedRequest: RequestInit | undefined;
+    const testFetch = async (url: RequestInfo, init: RequestInit = {}): Promise<Response> => {
+      count++;
+      if (count <= 2) {
+        return new Response(undefined, {
+          status: 429,
+          headers: {
+            'Retry-After': '0.1',
+          },
+        });
+      }
+      capturedRequest = init;
+      return new Response(JSON.stringify({ a: 1 }), { headers: { 'Content-Type': 'application/json' } });
+    };
+    const client = new Together({
+      apiKey: 'My API Key',
+      fetch: testFetch,
+      maxRetries: 4,
+      defaultHeaders: { 'X-Stainless-Retry-Count': null },
+    });
+
+    expect(
+      await client.request({
+        path: '/foo',
+        method: 'get',
+      }),
+    ).toEqual({ a: 1 });
+
+    expect(capturedRequest!.headers as Headers).not.toHaveProperty('x-stainless-retry-count');
+  });
+
   test('overwrite retry count header', async () => {
     let count = 0;
     let capturedRequest: RequestInit | undefined;