diff --git a/providers/openai/models/gpt-5.6-luna.toml b/providers/openai/models/gpt-5.6-luna.toml
index 52112d9628..9c5c84d1eb 100644
--- a/providers/openai/models/gpt-5.6-luna.toml
+++ b/providers/openai/models/gpt-5.6-luna.toml
@@ -2,20 +2,20 @@ base_model = "openai/gpt-5.6-luna"
 reasoning_options = [{ type = "effort", values = ["none", "low", "medium", "high", "xhigh", "max"] }]
 
 [cost]
-input = 1.00
-output = 6.00
-cache_read = 0.10
-cache_write = 1.25
+input = 0.20
+output = 1.20
+cache_read = 0.02
+cache_write = 0.25
 
 [[cost.tiers]]
 tier = { size = 272_000 }
-input = 2.00
-output = 9.00
-cache_read = 0.20
-cache_write = 2.50
+input = 0.40
+output = 1.80
+cache_read = 0.04
+cache_write = 0.50
 
 [experimental.modes.fast]
-cost = { input = 2.00, output = 12.00, cache_read = 0.20, cache_write = 2.50 }
+cost = { input = 0.40, output = 2.40, cache_read = 0.04, cache_write = 0.50 }
 provider = { body = { service_tier = "priority" } }
 
 [experimental.modes.pro]
diff --git a/providers/openai/models/gpt-5.6-terra.toml b/providers/openai/models/gpt-5.6-terra.toml
index 5f251b6a07..9c0e4e0333 100644
--- a/providers/openai/models/gpt-5.6-terra.toml
+++ b/providers/openai/models/gpt-5.6-terra.toml
@@ -2,20 +2,20 @@ base_model = "openai/gpt-5.6-terra"
 reasoning_options = [{ type = "effort", values = ["none", "low", "medium", "high", "xhigh", "max"] }]
 
 [cost]
-input = 2.50
-output = 15.00
-cache_read = 0.25
-cache_write = 3.125
+input = 2.00
+output = 12.00
+cache_read = 0.20
+cache_write = 2.50
 
 [[cost.tiers]]
 tier = { size = 272_000 }
-input = 5.00
-output = 22.50
-cache_read = 0.50
-cache_write = 6.25
+input = 4.00
+output = 18.00
+cache_read = 0.40
+cache_write = 5.00
 
 [experimental.modes.fast]
-cost = { input = 5.00, output = 30.00, cache_read = 0.50, cache_write = 6.25 }
+cost = { input = 4.00, output = 24.00, cache_read = 0.40, cache_write = 5.00 }
 provider = { body = { service_tier = "priority" } }
 
 [experimental.modes.pro]
diff --git a/providers/opencode/models/gpt-5.6-luna.toml b/providers/opencode/models/gpt-5.6-luna.toml
index 30038db527..ac586c6bfc 100644
--- a/providers/opencode/models/gpt-5.6-luna.toml
+++ b/providers/opencode/models/gpt-5.6-luna.toml
@@ -2,17 +2,17 @@ base_model = "openai/gpt-5.6-luna"
 reasoning_options = [{ type = "effort", values = ["none", "low", "medium", "high", "xhigh", "max"] }]
 
 [cost]
-input = 1
-output = 6
-cache_read = 0.1
-cache_write = 1.25
+input = 0.2
+output = 1.2
+cache_read = 0.02
+cache_write = 0.25
 
 [[cost.tiers]]
 tier = { type = "context", size = 272_000 }
-input = 2
-output = 9
-cache_read = 0.2
-cache_write = 2.5
+input = 0.4
+output = 1.8
+cache_read = 0.04
+cache_write = 0.5
 
 [provider]
 npm = "@ai-sdk/openai"
diff --git a/providers/opencode/models/gpt-5.6-terra.toml b/providers/opencode/models/gpt-5.6-terra.toml
index 40a3182b7e..8c1bf8d3b2 100644
--- a/providers/opencode/models/gpt-5.6-terra.toml
+++ b/providers/opencode/models/gpt-5.6-terra.toml
@@ -2,17 +2,17 @@ base_model = "openai/gpt-5.6-terra"
 reasoning_options = [{ type = "effort", values = ["none", "low", "medium", "high", "xhigh", "max"] }]
 
 [cost]
-input = 2.5
-output = 15
-cache_read = 0.25
-cache_write = 3.125
+input = 2
+output = 12
+cache_read = 0.2
+cache_write = 2.5
 
 [[cost.tiers]]
 tier = { type = "context", size = 272_000 }
-input = 5
-output = 22.5
-cache_read = 0.5
-cache_write = 6.25
+input = 4
+output = 18
+cache_read = 0.4
+cache_write = 5
 
 [provider]
 npm = "@ai-sdk/openai"