diff --git a/backend/internal/service/channel_service.go b/backend/internal/service/channel_service.go
index a3a14893a..934f06d97 100644
--- a/backend/internal/service/channel_service.go
+++ b/backend/internal/service/channel_service.go
@@ -60,6 +60,16 @@ type channelModelKey struct {
 	model    string // lowercase
 }
 
+// normalizeChannelPricingModelName makes Anthropic's dot and hyphen spelling
+// differences equivalent in channel pricing cache keys.
+func normalizeChannelPricingModelName(model string) string {
+	model = strings.ToLower(strings.TrimSpace(model))
+	if strings.HasPrefix(model, "claude-") {
+		model = strings.ReplaceAll(model, ".", "-")
+	}
+	return model
+}
+
 // channelGroupPlatformKey 通配符定价缓存键
 type channelGroupPlatformKey struct {
 	groupID  int64
@@ -217,13 +227,13 @@ func expandPricingToCache(cache *channelCache, ch *Channel, gid int64, platform
 		gpKey := channelGroupPlatformKey{groupID: gid, platform: pricingPlatform}
 		for _, model := range pricing.Models {
 			if strings.HasSuffix(model, "*") {
-				prefix := strings.ToLower(strings.TrimSuffix(model, "*"))
+				prefix := normalizeChannelPricingModelName(strings.TrimSuffix(model, "*"))
 				cache.wildcardByGroupPlatform[gpKey] = append(cache.wildcardByGroupPlatform[gpKey], &wildcardPricingEntry{
 					prefix:  prefix,
 					pricing: pricing,
 				})
 			} else {
-				key := channelModelKey{groupID: gid, platform: pricingPlatform, model: strings.ToLower(model)}
+				key := channelModelKey{groupID: gid, platform: pricingPlatform, model: normalizeChannelPricingModelName(model)}
 				cache.pricingByGroupModel[key] = pricing
 			}
 		}
@@ -402,6 +412,7 @@ func (c *channelCache) matchWildcardMapping(groupID int64, platform, modelLower
 // lookupPricingAcrossPlatforms 在分组平台内查找模型定价。
 // 各平台严格独立，只在本平台内查找（先精确匹配，再通配符）。
 func lookupPricingAcrossPlatforms(cache *channelCache, groupID int64, groupPlatform, modelLower string) *ChannelModelPricing {
+	modelLower = normalizeChannelPricingModelName(modelLower)
 	for _, p := range matchingPlatforms(groupPlatform) {
 		key := channelModelKey{groupID: groupID, platform: p, model: modelLower}
 		if pricing, ok := cache.pricingByGroupModel[key]; ok {
diff --git a/backend/internal/service/channel_service_test.go b/backend/internal/service/channel_service_test.go
index 035b941db..a89e5063a 100644
--- a/backend/internal/service/channel_service_test.go
+++ b/backend/internal/service/channel_service_test.go
@@ -675,6 +675,25 @@ func TestGetChannelModelPricing_CaseInsensitive(t *testing.T) {
 	require.Equal(t, int64(100), result.ID)
 }
 
+func TestGetChannelModelPricing_NormalizesDotsAndHyphens(t *testing.T) {
+	ch := Channel{
+		ID:       1,
+		Status:   StatusActive,
+		GroupIDs: []int64{10},
+		ModelPricing: []ChannelModelPricing{
+			{ID: 100, Platform: "anthropic", Models: []string{"claude-opus-4.8"}, BillingMode: BillingModePerRequest, PerRequestPrice: testPtrFloat64(0.007)},
+		},
+	}
+	repo := makeStandardRepo(ch, map[int64]string{10: "anthropic"})
+	svc := newTestChannelService(repo)
+
+	result := svc.GetChannelModelPricing(context.Background(), 10, "claude-opus-4-8")
+	require.NotNil(t, result)
+	require.Equal(t, int64(100), result.ID)
+	require.Equal(t, BillingModePerRequest, result.BillingMode)
+	require.InDelta(t, 0.007, *result.PerRequestPrice, 1e-12)
+}
+
 func TestGetChannelModelPricing_WildcardMatch(t *testing.T) {
 	ch := Channel{
 		ID:       1,