diff --git a/relay/adaptor/stepfun/constants.go b/relay/adaptor/stepfun/constants.go
index a82e562b..6a2346ca 100644
--- a/relay/adaptor/stepfun/constants.go
+++ b/relay/adaptor/stepfun/constants.go
@@ -1,7 +1,13 @@
 package stepfun
 
 var ModelList = []string{
+	"step-1-8k",
 	"step-1-32k",
+	"step-1-128k",
+	"step-1-256k",
+	"step-1-flash",
+	"step-2-16k",
+	"step-1v-8k",
 	"step-1v-32k",
-	"step-1-200k",
+	"step-1x-medium",
 }
diff --git a/relay/billing/ratio/image.go b/relay/billing/ratio/image.go
index ced0c667..c8c42a15 100644
--- a/relay/billing/ratio/image.go
+++ b/relay/billing/ratio/image.go
@@ -30,6 +30,14 @@ var ImageSizeRatios = map[string]map[string]float64{
 		"720x1280":  1,
 		"1280x720":  1,
 	},
+	"step-1x-medium": {
+		"256x256":   1,
+		"512x512":   1,
+		"768x768":   1,
+		"1024x1024": 1,
+		"1280x800":  1,
+		"800x1280":  1,
+	},
 }
 
 var ImageGenerationAmounts = map[string][2]int{
@@ -39,6 +47,7 @@ var ImageGenerationAmounts = map[string][2]int{
 	"ali-stable-diffusion-v1.5": {1, 4}, // Ali
 	"wanx-v1":                   {1, 4}, // Ali
 	"cogview-3":                 {1, 1},
+	"step-1x-medium":            {1, 1},
 }
 
 var ImagePromptLengthLimitations = map[string]int{
@@ -48,6 +57,7 @@ var ImagePromptLengthLimitations = map[string]int{
 	"ali-stable-diffusion-v1.5": 4000,
 	"wanx-v1":                   4000,
 	"cogview-3":                 833,
+	"step-1x-medium":            4000,
 }
 
 var ImageOriginModelName = map[string]string{
diff --git a/relay/billing/ratio/model.go b/relay/billing/ratio/model.go
index 7bc6cd54..075fa192 100644
--- a/relay/billing/ratio/model.go
+++ b/relay/billing/ratio/model.go
@@ -171,10 +171,15 @@ var ModelRatio = map[string]float64{
 	"yi-34b-chat-0205": 2.5 / 1000 * RMB,
 	"yi-34b-chat-200k": 12.0 / 1000 * RMB,
 	"yi-vl-plus":       6.0 / 1000 * RMB,
-	// stepfun todo
-	"step-1v-32k": 0.024 * RMB,
-	"step-1-32k":  0.024 * RMB,
-	"step-1-200k": 0.15 * RMB,
+	// https://platform.stepfun.com/docs/pricing/details
+	"step-1-8k":    0.005 / 1000 * RMB,
+	"step-1-32k":   0.015 / 1000 * RMB,
+	"step-1-128k":  0.040 / 1000 * RMB,
+	"step-1-256k":  0.095 / 1000 * RMB,
+	"step-1-flash": 0.001 / 1000 * RMB,
+	"step-2-16k":   0.038 / 1000 * RMB,
+	"step-1v-8k":   0.005 / 1000 * RMB,
+	"step-1v-32k":  0.015 / 1000 * RMB,
 	// aws llama3 https://aws.amazon.com/cn/bedrock/pricing/
 	"llama3-8b-8192(33)":  0.0003 / 0.002,  // $0.0003 / 1K tokens
 	"llama3-70b-8192(33)": 0.00265 / 0.002, // $0.00265 / 1K tokens
@@ -200,8 +205,10 @@ var CompletionRatio = map[string]float64{
 	"llama3-70b-8192(33)": 0.0035 / 0.00265,
 }
 
-var DefaultModelRatio map[string]float64
-var DefaultCompletionRatio map[string]float64
+var (
+	DefaultModelRatio      map[string]float64
+	DefaultCompletionRatio map[string]float64
+)
 
 func init() {
 	DefaultModelRatio = make(map[string]float64)