diff --git a/models/spring-ai-anthropic/src/main/java/org/springframework/ai/anthropic/api/AnthropicApi.java b/models/spring-ai-anthropic/src/main/java/org/springframework/ai/anthropic/api/AnthropicApi.java
index a5aa780a0f9..d7c1aacd268 100644
--- a/models/spring-ai-anthropic/src/main/java/org/springframework/ai/anthropic/api/AnthropicApi.java
+++ b/models/spring-ai-anthropic/src/main/java/org/springframework/ai/anthropic/api/AnthropicApi.java
@@ -119,12 +119,14 @@ private AnthropicApi(String baseUrl, String completionsPath, String anthropicApi
 
 		this.completionsPath = completionsPath;
 
-		this.restClient = restClientBuilder.baseUrl(baseUrl)
+		this.restClient = restClientBuilder.clone()
+			.baseUrl(baseUrl)
 			.defaultHeaders(jsonContentHeaders)
 			.defaultStatusHandler(responseErrorHandler)
 			.build();
 
-		this.webClient = webClientBuilder.baseUrl(baseUrl)
+		this.webClient = webClientBuilder.clone()
+			.baseUrl(baseUrl)
 			.defaultHeaders(jsonContentHeaders)
 			.defaultStatusHandler(HttpStatusCode::isError,
 					resp -> resp.bodyToMono(String.class)
diff --git a/models/spring-ai-minimax/src/main/java/org/springframework/ai/minimax/api/MiniMaxApi.java b/models/spring-ai-minimax/src/main/java/org/springframework/ai/minimax/api/MiniMaxApi.java
index 0d6dabaa8a1..eeb6c859a03 100644
--- a/models/spring-ai-minimax/src/main/java/org/springframework/ai/minimax/api/MiniMaxApi.java
+++ b/models/spring-ai-minimax/src/main/java/org/springframework/ai/minimax/api/MiniMaxApi.java
@@ -115,7 +115,7 @@ public MiniMaxApi(String baseUrl, String miniMaxToken, RestClient.Builder restCl
 				.defaultStatusHandler(responseErrorHandler)
 				.build();
 
-		this.webClient = WebClient.builder()
+		this.webClient = WebClient.builder() // FIXME: use a bean instead
 				.baseUrl(baseUrl)
 				.defaultHeaders(authHeaders)
 				.build();
diff --git a/models/spring-ai-mistral-ai/src/main/java/org/springframework/ai/mistralai/api/MistralAiApi.java b/models/spring-ai-mistral-ai/src/main/java/org/springframework/ai/mistralai/api/MistralAiApi.java
index 7b32a5911bd..68d9afb60f4 100644
--- a/models/spring-ai-mistral-ai/src/main/java/org/springframework/ai/mistralai/api/MistralAiApi.java
+++ b/models/spring-ai-mistral-ai/src/main/java/org/springframework/ai/mistralai/api/MistralAiApi.java
@@ -112,7 +112,11 @@ public MistralAiApi(String baseUrl, String mistralAiApiKey, RestClient.Builder r
 			.defaultStatusHandler(responseErrorHandler)
 			.build();
 
-		this.webClient = WebClient.builder().baseUrl(baseUrl).defaultHeaders(jsonContentHeaders).build();
+		this.webClient = WebClient.builder().baseUrl(baseUrl).defaultHeaders(jsonContentHeaders).build(); // FIXME:
+																											// use
+																											// a
+																											// bean
+																											// instead
 	}
 
 	/**
diff --git a/models/spring-ai-ollama/src/main/java/org/springframework/ai/ollama/api/OllamaApi.java b/models/spring-ai-ollama/src/main/java/org/springframework/ai/ollama/api/OllamaApi.java
index 02f1e8816e2..ec3f0cc50ff 100644
--- a/models/spring-ai-ollama/src/main/java/org/springframework/ai/ollama/api/OllamaApi.java
+++ b/models/spring-ai-ollama/src/main/java/org/springframework/ai/ollama/api/OllamaApi.java
@@ -80,11 +80,13 @@ private OllamaApi(String baseUrl, RestClient.Builder restClientBuilder, WebClien
 		};
 
 		this.restClient = restClientBuilder.baseUrl(baseUrl)
+				.clone()
 				.defaultHeaders(defaultHeaders)
 				.defaultStatusHandler(responseErrorHandler)
 				.build();
 
 		this.webClient = webClientBuilder
+				.clone()
 				.baseUrl(baseUrl)
 				.defaultHeaders(defaultHeaders)
 				.build();
diff --git a/models/spring-ai-openai/src/main/java/org/springframework/ai/openai/api/OpenAiApi.java b/models/spring-ai-openai/src/main/java/org/springframework/ai/openai/api/OpenAiApi.java
index 3cc5d5b4864..6a0bbde3f75 100644
--- a/models/spring-ai-openai/src/main/java/org/springframework/ai/openai/api/OpenAiApi.java
+++ b/models/spring-ai-openai/src/main/java/org/springframework/ai/openai/api/OpenAiApi.java
@@ -115,12 +115,15 @@ public OpenAiApi(String baseUrl, ApiKey apiKey, MultiValueMap<String, String> he
 			h.setContentType(MediaType.APPLICATION_JSON);
 			h.addAll(headers);
 		};
-		this.restClient = restClientBuilder.baseUrl(baseUrl)
+		this.restClient = restClientBuilder
+				.clone()
+				.baseUrl(baseUrl)
 			.defaultHeaders(finalHeaders)
 			.defaultStatusHandler(responseErrorHandler)
 			.build();
 
 		this.webClient = webClientBuilder
+				.clone()
 			.baseUrl(baseUrl)
 			.defaultHeaders(finalHeaders)
 			.build(); // @formatter:on
diff --git a/models/spring-ai-openai/src/main/java/org/springframework/ai/openai/api/OpenAiAudioApi.java b/models/spring-ai-openai/src/main/java/org/springframework/ai/openai/api/OpenAiAudioApi.java
index 8974081b2f8..21775d5e7aa 100644
--- a/models/spring-ai-openai/src/main/java/org/springframework/ai/openai/api/OpenAiAudioApi.java
+++ b/models/spring-ai-openai/src/main/java/org/springframework/ai/openai/api/OpenAiAudioApi.java
@@ -77,12 +77,13 @@ public OpenAiAudioApi(String baseUrl, ApiKey apiKey, MultiValueMap<String, Strin
 			// h.setContentType(MediaType.APPLICATION_JSON);
 		};
 
-		this.restClient = restClientBuilder.baseUrl(baseUrl)
+		this.restClient = restClientBuilder.clone()
+			.baseUrl(baseUrl)
 			.defaultHeaders(authHeaders)
 			.defaultStatusHandler(responseErrorHandler)
 			.build();
 
-		this.webClient = webClientBuilder.baseUrl(baseUrl).defaultHeaders(authHeaders).build();
+		this.webClient = webClientBuilder.clone().baseUrl(baseUrl).defaultHeaders(authHeaders).build();
 	}
 
 	public static Builder builder() {
diff --git a/models/spring-ai-zhipuai/src/main/java/org/springframework/ai/zhipuai/api/ZhiPuAiApi.java b/models/spring-ai-zhipuai/src/main/java/org/springframework/ai/zhipuai/api/ZhiPuAiApi.java
index eee86766158..98f215dbfdb 100644
--- a/models/spring-ai-zhipuai/src/main/java/org/springframework/ai/zhipuai/api/ZhiPuAiApi.java
+++ b/models/spring-ai-zhipuai/src/main/java/org/springframework/ai/zhipuai/api/ZhiPuAiApi.java
@@ -116,7 +116,7 @@ public ZhiPuAiApi(String baseUrl, String zhiPuAiToken, RestClient.Builder restCl
 				.defaultStatusHandler(responseErrorHandler)
 				.build();
 
-		this.webClient = WebClient.builder()
+		this.webClient = WebClient.builder() // FIXME: use a builder instead
 				.baseUrl(baseUrl)
 				.defaultHeaders(authHeaders)
 				.build();