diff --git a/crates/artificial-core/Cargo.toml b/crates/artificial-core/Cargo.toml
index d7a27b1..5972d2f 100644
--- a/crates/artificial-core/Cargo.toml
+++ b/crates/artificial-core/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "artificial-core"
-version = "0.4.0"
+version = "0.4.1"
 edition = "2021"
 description = "Provider-agnostic core traits, generic client and error types for the Artificial prompt-engineering SDK"
 license = "MIT"
diff --git a/crates/artificial-core/src/client.rs b/crates/artificial-core/src/client.rs
index 245b1e7..0c7a64b 100644
--- a/crates/artificial-core/src/client.rs
+++ b/crates/artificial-core/src/client.rs
@@ -99,7 +99,7 @@ impl<B: ChatCompletionProvider> ChatCompletionProvider for ArtificialClient<B> {
         >,
     >
     where
-        M: Into<Self::Message> + Send + Sync + 'p,
+        M: Into<Self::Message> + Clone + Send + Sync + 'p,
     {
         self.backend.chat_complete(params)
     }
@@ -113,7 +113,7 @@ impl<B: StreamingChatProvider> StreamingChatProvider for ArtificialClient<B> {
 
     fn chat_complete_stream<'p, M>(&self, params: ChatCompleteParameters<M>) -> Self::Delta<'p>
     where
-        M: Into<Self::Message> + Send + Sync + 'p,
+        M: Into<Self::Message> + Clone + Send + Sync + 'p,
     {
         self.backend.chat_complete_stream(params)
     }
@@ -130,7 +130,7 @@ impl<B: StreamingEventsProvider> StreamingEventsProvider for ArtificialClient<B>
         params: crate::provider::ChatCompleteParameters<M>,
     ) -> Self::EventStream<'p>
     where
-        M: Into<Self::Message> + Send + Sync + 'p,
+        M: Into<Self::Message> + Clone + Send + Sync + 'p,
     {
         self.backend.chat_complete_events_stream(params)
     }
diff --git a/crates/artificial-core/src/generic.rs b/crates/artificial-core/src/generic.rs
index fa7c773..42d56e8 100644
--- a/crates/artificial-core/src/generic.rs
+++ b/crates/artificial-core/src/generic.rs
@@ -194,5 +194,5 @@ pub trait StreamingEventsProvider: crate::provider::ChatCompletionProvider {
         params: crate::provider::ChatCompleteParameters<M>,
     ) -> Self::EventStream<'p>
     where
-        M: Into<Self::Message> + Send + Sync + 'p;
+        M: Into<Self::Message> + Clone + Send + Sync + 'p;
 }
diff --git a/crates/artificial-core/src/provider/chat_complete.rs b/crates/artificial-core/src/provider/chat_complete.rs
index 41fcdfd..b979604 100644
--- a/crates/artificial-core/src/provider/chat_complete.rs
+++ b/crates/artificial-core/src/provider/chat_complete.rs
@@ -30,7 +30,7 @@ pub trait ChatCompletionProvider: Send + Sync {
         Box<dyn Future<Output = Result<GenericChatCompletionResponse<GenericMessage>>> + Send + 'p>,
     >
     where
-        M: Into<Self::Message> + Send + Sync + 'p;
+        M: Into<Self::Message> + Clone + Send + Sync + 'p;
 }
 
 /// A provider that can deliver the model’s answer **incrementally**.
@@ -49,11 +49,11 @@ pub trait StreamingChatProvider: ChatCompletionProvider {
     /// Start a streaming chat completion.
     fn chat_complete_stream<'p, M>(&self, params: ChatCompleteParameters<M>) -> Self::Delta<'p>
     where
-        M: Into<Self::Message> + Send + Sync + 'p;
+        M: Into<Self::Message> + Clone + Send + Sync + 'p;
 }
 
 #[derive(Debug, Clone)]
-pub struct ChatCompleteParameters<M> {
+pub struct ChatCompleteParameters<M: Clone> {
     pub messages: Vec<M>,
     pub model: Model,
     pub tools: Option<Vec<GenericFunctionSpec>>,
@@ -61,7 +61,7 @@ pub struct ChatCompleteParameters<M> {
     pub response_format: Option<serde_json::Value>,
 }
 
-impl<M> ChatCompleteParameters<M> {
+impl<M: Clone> ChatCompleteParameters<M> {
     pub fn new(messages: Vec<M>, model: Model) -> Self {
         Self {
             messages,
diff --git a/crates/artificial-openai/Cargo.toml b/crates/artificial-openai/Cargo.toml
index a3a1c43..82d16d2 100644
--- a/crates/artificial-openai/Cargo.toml
+++ b/crates/artificial-openai/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "artificial-openai"
-version = "0.4.0"
+version = "0.4.1"
 edition = "2024"
 description = "OpenAI backend adapter for the Artificial prompt-engineering SDK"
 license = "MIT"
@@ -24,7 +24,7 @@ reqwest = { version = "0.12", default-features = false, features = [
     "deflate",
     "multipart",
 ] }
-artificial-core = { path = "../artificial-core" , version = "0.4.0"}
+artificial-core = { path = "../artificial-core" , version = "0.4.1"}
 futures-util = "0.3"
 async-stream = "0.3"
 bytes = "1"
diff --git a/crates/artificial-openai/src/api_v1/chat_completion.rs b/crates/artificial-openai/src/api_v1/chat_completion.rs
index 49f19e5..6791c0e 100644
--- a/crates/artificial-openai/src/api_v1/chat_completion.rs
+++ b/crates/artificial-openai/src/api_v1/chat_completion.rs
@@ -55,7 +55,7 @@ impl_builder_methods!(
 
 impl<M> TryFrom<ChatCompleteParameters<M>> for ChatCompletionRequest
 where
-    M: Into<ChatCompletionMessage>,
+    M: Into<ChatCompletionMessage> + Clone,
 {
     type Error = ArtificialError;
 
diff --git a/crates/artificial-openai/src/provider_impl_chat.rs b/crates/artificial-openai/src/provider_impl_chat.rs
index 59bae45..8c44c03 100644
--- a/crates/artificial-openai/src/provider_impl_chat.rs
+++ b/crates/artificial-openai/src/provider_impl_chat.rs
@@ -30,7 +30,7 @@ impl ChatCompletionProvider for OpenAiAdapter {
         >,
     >
     where
-        M: Into<Self::Message> + Send + Sync + 'p,
+        M: Into<Self::Message> + Clone + Send + Sync + 'p,
     {
         let client = Arc::clone(&self.client);
 
diff --git a/crates/artificial-openai/src/provider_impl_chat_stream.rs b/crates/artificial-openai/src/provider_impl_chat_stream.rs
index 4be31d5..427e107 100644
--- a/crates/artificial-openai/src/provider_impl_chat_stream.rs
+++ b/crates/artificial-openai/src/provider_impl_chat_stream.rs
@@ -18,7 +18,7 @@ impl StreamingChatProvider for OpenAiAdapter {
 
     fn chat_complete_stream<'p, M>(&self, params: ChatCompleteParameters<M>) -> Self::Delta<'p>
     where
-        M: Into<Self::Message> + Send + Sync + 'p,
+        M: Into<Self::Message> + Clone + Send + Sync + 'p,
     {
         let client = self.client.clone();
 
@@ -55,7 +55,7 @@ impl StreamingEventsProvider for OpenAiAdapter {
         params: ChatCompleteParameters<M>,
     ) -> Self::EventStream<'p>
     where
-        M: Into<Self::Message> + Send + Sync + 'p,
+        M: Into<Self::Message> + Clone + Send + Sync + 'p,
     {
         let client = self.client.clone();
 
diff --git a/crates/artificial-prompt/Cargo.toml b/crates/artificial-prompt/Cargo.toml
index 615211b..cef8081 100644
--- a/crates/artificial-prompt/Cargo.toml
+++ b/crates/artificial-prompt/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "artificial-prompt"
-version = "0.4.0"
+version = "0.4.1"
 edition = "2024"
 description = "Fluent builders and helpers for composing markdown prompt fragments"
 license = "MIT"
@@ -9,4 +9,4 @@ categories = ["development-tools", "text-processing"]
 keywords = ["ai", "prompt", "markdown", "builder"]
 
 [dependencies]
-artificial-core = { path = "../artificial-core" , version = "0.4.0"}
+artificial-core = { path = "../artificial-core" , version = "0.4.1"}
diff --git a/crates/artificial-types/Cargo.toml b/crates/artificial-types/Cargo.toml
index da6935d..51adc56 100644
--- a/crates/artificial-types/Cargo.toml
+++ b/crates/artificial-types/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "artificial-types"
-version = "0.4.0"
+version = "0.4.1"
 edition = "2024"
 description = "Reusable prompt fragments and helper types for the Artificial prompt-engineering SDK"
 license = "MIT"
@@ -9,8 +9,8 @@ categories = ["development-tools", "text-processing"]
 keywords = ["ai", "prompt-fragments", "json-schema", "sdk"]
 
 [dependencies]
-artificial-core = { path = "../artificial-core" , version = "0.4.0"}
-artificial-prompt = { path = "../artificial-prompt" , version = "0.4.0"}
+artificial-core = { path = "../artificial-core" , version = "0.4.1"}
+artificial-prompt = { path = "../artificial-prompt" , version = "0.4.1"}
 chrono = "0.4.41"
 
 schemars.workspace = true
diff --git a/crates/artificial/Cargo.toml b/crates/artificial/Cargo.toml
index f263181..d4e0d97 100644
--- a/crates/artificial/Cargo.toml
+++ b/crates/artificial/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "artificial"
-version = "0.4.0"
+version = "0.4.1"
 edition = "2024"
 description = "Typed, provider-agnostic prompt-engineering SDK for Rust"
 authors = ["Marc Riegel <mail@mrcrgl.de>"]
@@ -15,10 +15,10 @@ default = ["openai"]
 openai = ["dep:artificial-openai"]
 
 [dependencies]
-artificial-types = { path = "../artificial-types", version = "0.4.0" }
-artificial-openai = { path = "../artificial-openai", optional = true, version = "0.4.0" }
-artificial-core = { path = "../artificial-core", version = "0.4.0" }
-artificial-prompt = { path = "../artificial-prompt", version = "0.4.0" }
+artificial-types = { path = "../artificial-types", version = "0.4.1" }
+artificial-openai = { path = "../artificial-openai", optional = true, version = "0.4.1" }
+artificial-core = { path = "../artificial-core", version = "0.4.1" }
+artificial-prompt = { path = "../artificial-prompt", version = "0.4.1" }
 
 [dev-dependencies]
 tokio = { version = "1", features = ["full"] }