diff --git a/providers/zenmux/models/anthropic/claude-3.7-sonnet.toml b/providers/zenmux/models/anthropic/claude-3.7-sonnet.toml
index d2ff486a88..49d552a762 100644
--- a/providers/zenmux/models/anthropic/claude-3.7-sonnet.toml
+++ b/providers/zenmux/models/anthropic/claude-3.7-sonnet.toml
@@ -3,6 +3,7 @@ release_date = "2025-02-24"
 last_updated = "2025-02-24"
 attachment = true
 reasoning = true
+reasoning_options = [{ type = "effort", values = ["low", "medium", "high"] }]
 temperature = true
 tool_call = true
 knowledge = "2025-01-01"
diff --git a/providers/zenmux/models/anthropic/claude-fable-5.toml b/providers/zenmux/models/anthropic/claude-fable-5.toml
index 88f8cc9cb4..16e066bd84 100644
--- a/providers/zenmux/models/anthropic/claude-fable-5.toml
+++ b/providers/zenmux/models/anthropic/claude-fable-5.toml
@@ -1,4 +1,5 @@
 base_model = "anthropic/claude-fable-5"
+reasoning_options = [{ type = "effort", values = ["low", "medium", "high"] }]
 
 [cost]
 input = 10.00
diff --git a/providers/zenmux/models/anthropic/claude-opus-4.1.toml b/providers/zenmux/models/anthropic/claude-opus-4.1.toml
index 1ea107b8a3..ce457a1997 100644
--- a/providers/zenmux/models/anthropic/claude-opus-4.1.toml
+++ b/providers/zenmux/models/anthropic/claude-opus-4.1.toml
@@ -3,6 +3,7 @@ release_date = "2025-08-05"
 last_updated = "2025-08-05"
 attachment = true
 reasoning = true
+reasoning_options = [{ type = "effort", values = ["low", "medium", "high"] }]
 temperature = true
 tool_call = true
 knowledge = "2025-01-01"
diff --git a/providers/zenmux/models/anthropic/claude-opus-4.5.toml b/providers/zenmux/models/anthropic/claude-opus-4.5.toml
index 69613fe021..f093c9e874 100644
--- a/providers/zenmux/models/anthropic/claude-opus-4.5.toml
+++ b/providers/zenmux/models/anthropic/claude-opus-4.5.toml
@@ -3,6 +3,7 @@ release_date = "2025-11-24"
 last_updated = "2025-11-24"
 attachment = true
 reasoning = true
+reasoning_options = [{ type = "effort", values = ["low", "medium", "high"] }]
 temperature = true
 tool_call = true
 knowledge = "2025-01-01"
diff --git a/providers/zenmux/models/anthropic/claude-opus-4.6.toml b/providers/zenmux/models/anthropic/claude-opus-4.6.toml
index c33ed112be..fca9e690e7 100644
--- a/providers/zenmux/models/anthropic/claude-opus-4.6.toml
+++ b/providers/zenmux/models/anthropic/claude-opus-4.6.toml
@@ -3,6 +3,7 @@ release_date = "2026-02-06"
 last_updated = "2026-02-06"
 attachment = true
 reasoning = true
+reasoning_options = [{ type = "effort", values = ["low", "medium", "high"] }]
 temperature = true
 tool_call = true
 knowledge = "2025-05-31"
diff --git a/providers/zenmux/models/anthropic/claude-opus-4.7.toml b/providers/zenmux/models/anthropic/claude-opus-4.7.toml
index e05bc6cbf3..a7a34ac6e7 100644
--- a/providers/zenmux/models/anthropic/claude-opus-4.7.toml
+++ b/providers/zenmux/models/anthropic/claude-opus-4.7.toml
@@ -3,6 +3,7 @@ release_date = "2026-04-16"
 last_updated = "2026-04-16"
 attachment = true
 reasoning = true
+reasoning_options = [{ type = "effort", values = ["low", "medium", "high"] }]
 temperature = false
 tool_call = true
 knowledge = "2026-01-31"
diff --git a/providers/zenmux/models/anthropic/claude-opus-4.8.toml b/providers/zenmux/models/anthropic/claude-opus-4.8.toml
index 0a0a626396..6fbaf57cd4 100644
--- a/providers/zenmux/models/anthropic/claude-opus-4.8.toml
+++ b/providers/zenmux/models/anthropic/claude-opus-4.8.toml
@@ -1,4 +1,5 @@
 base_model = "anthropic/claude-opus-4-8"
+reasoning_options = [{ type = "effort", values = ["low", "medium", "high"] }]
 
 [cost]
 input = 5.00
diff --git a/providers/zenmux/models/anthropic/claude-opus-4.toml b/providers/zenmux/models/anthropic/claude-opus-4.toml
index 7da865904a..03a8f75c1e 100644
--- a/providers/zenmux/models/anthropic/claude-opus-4.toml
+++ b/providers/zenmux/models/anthropic/claude-opus-4.toml
@@ -3,6 +3,7 @@ release_date = "2025-05-22"
 last_updated = "2025-05-22"
 attachment = true
 reasoning = true
+reasoning_options = [{ type = "effort", values = ["low", "medium", "high"] }]
 temperature = true
 tool_call = true
 knowledge = "2025-01-01"
diff --git a/providers/zenmux/models/anthropic/claude-sonnet-4.5.toml b/providers/zenmux/models/anthropic/claude-sonnet-4.5.toml
index c8dc925bb4..62d57b97d9 100644
--- a/providers/zenmux/models/anthropic/claude-sonnet-4.5.toml
+++ b/providers/zenmux/models/anthropic/claude-sonnet-4.5.toml
@@ -3,6 +3,7 @@ release_date = "2025-09-29"
 last_updated = "2025-09-29"
 attachment = true
 reasoning = true
+reasoning_options = [{ type = "effort", values = ["low", "medium", "high"] }]
 temperature = true
 tool_call = true
 knowledge = "2025-01-01"
diff --git a/providers/zenmux/models/anthropic/claude-sonnet-4.6.toml b/providers/zenmux/models/anthropic/claude-sonnet-4.6.toml
index 31194a91a7..13c1e9077e 100644
--- a/providers/zenmux/models/anthropic/claude-sonnet-4.6.toml
+++ b/providers/zenmux/models/anthropic/claude-sonnet-4.6.toml
@@ -3,6 +3,7 @@ release_date = "2026-02-18"
 last_updated = "2026-02-18"
 attachment = true
 reasoning = true
+reasoning_options = [{ type = "effort", values = ["low", "medium", "high"] }]
 temperature = true
 tool_call = true
 knowledge = "2025-08-31"
diff --git a/providers/zenmux/models/anthropic/claude-sonnet-4.toml b/providers/zenmux/models/anthropic/claude-sonnet-4.toml
index 9ed4075d4e..6bd7ef237c 100644
--- a/providers/zenmux/models/anthropic/claude-sonnet-4.toml
+++ b/providers/zenmux/models/anthropic/claude-sonnet-4.toml
@@ -3,6 +3,7 @@ release_date = "2025-05-22"
 last_updated = "2025-05-22"
 attachment = true
 reasoning = true
+reasoning_options = [{ type = "effort", values = ["low", "medium", "high"] }]
 temperature = true
 tool_call = true
 knowledge = "2025-01-01"