diff --git a/providers/kiro/models/claude-haiku-4.5.toml b/providers/kiro/models/claude-haiku-4.5.toml
index 424d9898885..094975376e3 100644
--- a/providers/kiro/models/claude-haiku-4.5.toml
+++ b/providers/kiro/models/claude-haiku-4.5.toml
@@ -1,3 +1,5 @@
+# Kiro exposes no caller-configurable reasoning control for Claude Haiku 4.5:
+# Source: https://kiro.dev/docs/cli/chat/effort/
 base_model = "anthropic/claude-haiku-4-5"
 name = "Claude Haiku 4.5"
 reasoning_options = []
diff --git a/providers/kiro/models/claude-opus-4.5.toml b/providers/kiro/models/claude-opus-4.5.toml
index fe310237fdf..400b3615818 100644
--- a/providers/kiro/models/claude-opus-4.5.toml
+++ b/providers/kiro/models/claude-opus-4.5.toml
@@ -1,3 +1,5 @@
+# Kiro exposes no caller-configurable reasoning control for Claude Opus 4.5:
+# Source: https://kiro.dev/docs/cli/chat/effort/
 base_model = "anthropic/claude-opus-4-5"
 name = "Claude Opus 4.5"
 reasoning_options = []
diff --git a/providers/kiro/models/claude-opus-4.6.toml b/providers/kiro/models/claude-opus-4.6.toml
index 2b5fee8054c..5b33a000aa4 100644
--- a/providers/kiro/models/claude-opus-4.6.toml
+++ b/providers/kiro/models/claude-opus-4.6.toml
@@ -11,3 +11,6 @@ output = 0
 [modalities]
 input = ["text", "image"]
 output = ["text"]
+
+[limit]
+output = 64_000
diff --git a/providers/kiro/models/claude-opus-5.toml b/providers/kiro/models/claude-opus-5.toml
new file mode 100644
index 00000000000..7cd66bf8929
--- /dev/null
+++ b/providers/kiro/models/claude-opus-5.toml
@@ -0,0 +1,12 @@
+base_model = "anthropic/claude-opus-5"
+
+[[reasoning_options]]
+type = "effort"
+values = ["low", "medium", "high", "xhigh", "max"]
+
+[cost]
+input = 0
+output = 0
+
+[modalities]
+input = ["text", "image"]
diff --git a/providers/kiro/models/claude-sonnet-4.5.toml b/providers/kiro/models/claude-sonnet-4.5.toml
index 012dd89516b..eee2cca83e7 100644
--- a/providers/kiro/models/claude-sonnet-4.5.toml
+++ b/providers/kiro/models/claude-sonnet-4.5.toml
@@ -1,3 +1,5 @@
+# Kiro exposes no caller-configurable reasoning control for Claude Sonnet 4.5:
+# Source: https://kiro.dev/docs/cli/chat/effort/
 base_model = "anthropic/claude-sonnet-4-5"
 name = "Claude Sonnet 4.5"
 reasoning_options = []
diff --git a/providers/kiro/models/claude-sonnet-4.toml b/providers/kiro/models/claude-sonnet-4.toml
index c7c2cb737b9..3db4e83f0a8 100644
--- a/providers/kiro/models/claude-sonnet-4.toml
+++ b/providers/kiro/models/claude-sonnet-4.toml
@@ -1,3 +1,5 @@
+# Kiro exposes no caller-configurable reasoning control for Claude Sonnet 4:
+# Source: https://kiro.dev/docs/cli/chat/effort/
 base_model = "anthropic/claude-sonnet-4-0"
 name = "Claude Sonnet 4"
 reasoning_options = []
diff --git a/providers/kiro/models/glm-5.toml b/providers/kiro/models/glm-5.toml
index 07e0f395532..fbed6e387d3 100644
--- a/providers/kiro/models/glm-5.toml
+++ b/providers/kiro/models/glm-5.toml
@@ -1,3 +1,5 @@
+# Kiro exposes no caller-configurable reasoning control for GLM-5:
+# Source: https://kiro.dev/docs/cli/chat/effort/
 base_model = "zhipuai/glm-5"
 reasoning_options = []