diff --git a/internal/provider/anthropic/cost.go b/internal/provider/anthropic/cost.go
index 95c88be..f5ef452 100644
--- a/internal/provider/anthropic/cost.go
+++ b/internal/provider/anthropic/cost.go
@@ -8,27 +8,45 @@ import (
 
 var AnthropicPerMillionTokenCost = map[string]map[string]float64{
 	"prompt": {
-		"claude-sonnet-4.5": 3.0,
+		"claude-opus-4-8": 5.0,
+		"claude-opus-4-7": 5.0,
+		"claude-opus-4-6": 5.0,
+		"claude-opus-4-5": 5.0,
+		"claude-opus-4-1": 15.0,
+		"claude-opus-4":   15.0,
+
+		"claude-sonnet-4-6": 3.0,
+		"claude-sonnet-4-5": 3.0,
 		"claude-sonnet-4":   3.0,
-		"claude-3.7-sonnet": 3.0,
-		"claude-opus-4.1":   15.0,
-		"claude-opus-4":     15.0,
-		"claude-3.5-haiku":  0.8,
-		"claude-3-haiku":    0.25,
 
-		"claude-3.5-sonnet": 3.0,
+		"claude-haiku-4-5": 1.0,
+
+		// old models
+		"claude-3-7-sonnet": 3.0,
+		"claude-3-5-haiku":  0.8,
+		"claude-3-haiku":    0.25,
+		"claude-3-5-sonnet": 3.0,
 		"claude-3-opus":     15.0,
 	},
 	"completion": {
-		"claude-sonnet-4.5": 15.0,
+		"claude-opus-4-8": 25.0,
+		"claude-opus-4-7": 25.0,
+		"claude-opus-4-6": 25.0,
+		"claude-opus-4-5": 25.0,
+		"claude-opus-4-1": 75.0,
+		"claude-opus-4":   75.0,
+
+		"claude-sonnet-4-6": 15.0,
+		"claude-sonnet-4-5": 15.0,
 		"claude-sonnet-4":   15.0,
-		"claude-3.7-sonnet": 15.0,
-		"claude-opus-4.1":   75.0,
-		"claude-opus-4":     75.0,
-		"claude-3.5-haiku":  4.0,
-		"claude-3-haiku":    1.25,
 
-		"claude-3.5-sonnet": 15.0,
+		"claude-haiku-4-5": 5.0,
+
+		// old models
+		"claude-3-7-sonnet": 15.0,
+		"claude-3-5-haiku":  4.0,
+		"claude-3-haiku":    1.25,
+		"claude-3-5-sonnet": 15.0,
 		"claude-3-opus":     75.0,
 	},
 }
@@ -87,26 +105,54 @@ func (ce *CostEstimator) EstimatePromptCost(model string, tks int) (float64, err
 }
 
 func SelectModel(model string) string {
-	if strings.HasPrefix(model, "claude-sonnet-4.5") || strings.HasPrefix(model, "claude-sonnet-4-5") {
-		return "claude-sonnet-4.5"
-	} else if strings.HasPrefix(model, "claude-sonnet-4") {
-		return "claude-sonnet-4"
-	} else if strings.HasPrefix(model, "claude-3.7-sonnet") || strings.HasPrefix(model, "claude-3-7-sonnet") {
-		return "claude-3.7-sonnet"
-	} else if strings.HasPrefix(model, "claude-opus-4.1") || strings.HasPrefix(model, "claude-opus-4-1") {
-		return "claude-opus-4.1"
-	} else if strings.HasPrefix(model, "claude-opus-4") {
+	if strings.HasPrefix(model, "claude-opus-4-8") {
+		return "claude-opus-4-8"
+	}
+	if strings.HasPrefix(model, "claude-opus-4-7") {
+		return "claude-opus-4-7"
+	}
+	if strings.HasPrefix(model, "claude-opus-4-6") {
+		return "claude-opus-4-6"
+	}
+	if strings.HasPrefix(model, "claude-opus-4-5") {
+		return "claude-opus-4-5"
+	}
+	if strings.HasPrefix(model, "claude-opus-4-1") {
+		return "claude-opus-4-1"
+	}
+	if strings.HasPrefix(model, "claude-opus-4") {
 		return "claude-opus-4"
-	} else if strings.HasPrefix(model, "claude-3.5-haiku") || strings.HasPrefix(model, "claude-3-5-haiku") {
-		return "claude-3.5-haiku"
-	} else if strings.HasPrefix(model, "claude-3-haiku") {
-		return "claude-3-haiku"
-	} else if strings.HasPrefix(model, "claude-3.5-sonnet") || strings.HasPrefix(model, "claude-3-5-sonnet") {
-		return "claude-3.5-sonnet"
-	} else if strings.HasPrefix(model, "claude-3-opus") {
+	}
+	if strings.HasPrefix(model, "claude-sonnet-4-6") {
+		return "claude-sonnet-4-6"
+	}
+	if strings.HasPrefix(model, "claude-sonnet-4-5") {
+		return "claude-sonnet-4-5"
+	}
+	if strings.HasPrefix(model, "claude-sonnet-4") {
+		return "claude-sonnet-4"
+	}
+	if strings.HasPrefix(model, "claude-haiku-4-5") {
+		return "claude-haiku-4-5"
+	}
+
+	// old
+	if strings.HasPrefix(model, "claude-3-7-sonnet") {
+		return "claude-3-7-sonnet"
+	}
+	if strings.HasPrefix(model, "claude-3-5-haiku") {
+		return "claude-3-5-haiku"
+	}
+	if strings.HasPrefix(model, "claude-3-5-sonnet") {
+		return "claude-3-5-sonnet"
+	}
+	if strings.HasPrefix(model, "claude-3-opus") {
 		return "claude-3-opus"
 	}
-	return ""
+	if strings.HasPrefix(model, "claude-3-haiku") {
+		return "claude-3-haiku"
+	}
+	return model
 }
 
 func convertAmazonModelToAnthropicModel(model string) string {
diff --git a/internal/provider/openai/cost.go b/internal/provider/openai/cost.go
index 3ac1d99..e83a100 100644
--- a/internal/provider/openai/cost.go
+++ b/internal/provider/openai/cost.go
@@ -41,6 +41,13 @@ var OpenAiPerThousandTokenCost = map[string]map[string]float64{
 		"chatgpt-image-latest": 0.005,
 		"gpt-image-1-mini":     0.002,
 
+		"gpt-5.5":           0.01,
+		"gpt-5.5~long":      0.01,
+		"gpt-5.5~short":     0.005,
+		"gpt-5.5-pro":       0.06,
+		"gpt-5.5-pro~long":  0.06,
+		"gpt-5.5-pro~short": 0.03,
+
 		"gpt-5.4":           0.005,
 		"gpt-5.4~long":      0.005,
 		"gpt-5.4~short":     0.0025,
@@ -115,6 +122,10 @@ var OpenAiPerThousandTokenCost = map[string]map[string]float64{
 		"babbage-002":                  0.000400,
 	},
 	"cached-prompt": {
+		"gpt-5.5":       0.001,
+		"gpt-5.5~long":  0.001,
+		"gpt-5.5~short": 0.0005,
+
 		"gpt-5.4":       0.0005,
 		"gpt-5.4~long":  0.0005,
 		"gpt-5.4~short": 0.00025,
@@ -202,6 +213,13 @@ var OpenAiPerThousandTokenCost = map[string]map[string]float64{
 		"gpt-image-1.5":        0.010,
 		"chatgpt-image-latest": 0.010,
 
+		"gpt-5.5":           0.045,
+		"gpt-5.5~long":      0.045,
+		"gpt-5.5~short":     0.03,
+		"gpt-5.5-pro":       0.27,
+		"gpt-5.5-pro~long":  0.27,
+		"gpt-5.5-pro~short": 0.18,
+
 		"gpt-5.4":           0.0225,
 		"gpt-5.4~long":      0.0225,
 		"gpt-5.4~short":     0.015,
@@ -1088,6 +1106,8 @@ func countTotalTokens(model string, r *goopenai.ChatCompletionRequest, tc tokenC
 }
 
 var modelWithLengthCtx = []string{
+	"gpt-5.5",
+	"gpt-5.5-pro",
 	"gpt-5.4",
 	"gpt-5.4-pro",
 }