diff --git a/crates/anthropic/src/anthropic.rs b/crates/anthropic/src/anthropic.rs
index 3f87acaf56d77a62ff8fba83295201b33572a872..fabf07d433c77aa53d77c9c298f3c53558c39260 100644
--- a/crates/anthropic/src/anthropic.rs
+++ b/crates/anthropic/src/anthropic.rs
@@ -958,6 +958,21 @@ pub enum ToolChoice {
 #[serde(tag = "type", rename_all = "lowercase")]
 pub enum Thinking {
     Enabled { budget_tokens: Option<u32> },
+    Adaptive,
+}
+
+#[derive(Debug, Clone, Copy, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum Effort {
+    Low,
+    Medium,
+    High,
+    Max,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct OutputConfig {
+    pub effort: Option<Effort>,
 }
 
 #[derive(Debug, Serialize, Deserialize)]
@@ -982,6 +997,8 @@ pub struct Request {
     pub system: Option<StringOrContents>,
     #[serde(default, skip_serializing_if = "Option::is_none")]
     pub metadata: Option<Metadata>,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub output_config: Option<OutputConfig>,
     #[serde(default, skip_serializing_if = "Vec::is_empty")]
     pub stop_sequences: Vec<String>,
     #[serde(default, skip_serializing_if = "Option::is_none")]
diff --git a/crates/edit_prediction_cli/src/anthropic_client.rs b/crates/edit_prediction_cli/src/anthropic_client.rs
index 653fddd58b3567697ca5c9024ea4944e3005016f..20f40a240e819885179d7175d6c7e4d9e266130d 100644
--- a/crates/edit_prediction_cli/src/anthropic_client.rs
+++ b/crates/edit_prediction_cli/src/anthropic_client.rs
@@ -47,6 +47,7 @@ impl PlainLlmClient {
             tool_choice: None,
             system: None,
             metadata: None,
+            output_config: None,
             stop_sequences: Vec::new(),
             temperature: None,
             top_k: None,
@@ -85,6 +86,7 @@ impl PlainLlmClient {
             tool_choice: None,
             system: None,
             metadata: None,
+            output_config: None,
             stop_sequences: Vec::new(),
             temperature: None,
             top_k: None,
@@ -560,6 +562,7 @@ impl BatchingLlmClient {
                         tool_choice: None,
                         system: None,
                         metadata: None,
+                        output_config: None,
                         stop_sequences: Vec::new(),
                         temperature: None,
                         top_k: None,
diff --git a/crates/language_models/src/provider/anthropic.rs b/crates/language_models/src/provider/anthropic.rs
index 3ea4a8ee37d76474714d6a4b875982e11f5c691b..7f8f7a1efb3aadcfe913c112103b63c3674bc581 100644
--- a/crates/language_models/src/provider/anthropic.rs
+++ b/crates/language_models/src/provider/anthropic.rs
@@ -779,6 +779,7 @@ pub fn into_anthropic(
             LanguageModelToolChoice::None => anthropic::ToolChoice::None,
         }),
         metadata: None,
+        output_config: None,
         stop_sequences: Vec::new(),
         temperature: request.temperature.or(Some(default_temperature)),
         top_k: None,