diff --git a/go.mod b/go.mod
index 15bf54c..bab0c2e 100644
--- a/go.mod
+++ b/go.mod
@@ -21,6 +21,7 @@ require (
 	github.com/sashabaranov/go-openai v1.32.5
 	github.com/stretchr/testify v1.8.4
 	github.com/tidwall/gjson v1.17.0
+	github.com/tidwall/sjson v1.2.5
 	go.uber.org/zap v1.24.0
 )
 
diff --git a/go.sum b/go.sum
index 324f3bc..3607d7d 100644
--- a/go.sum
+++ b/go.sum
@@ -154,8 +154,6 @@ github.com/redis/go-redis/v9 v9.0.5 h1:CuQcn5HIEeK7BgElubPP8CGtE0KakrnbBSTLjathl
 github.com/redis/go-redis/v9 v9.0.5/go.mod h1:WqMKv5vnQbRuZstUwxQI195wHy+t4PuXDOjzMvcuQHk=
 github.com/rogpeppe/go-internal v1.10.0 h1:TMyTOH3F/DB16zRVcYyreMH6GnZZrwQVAoYjRBZyWFQ=
 github.com/rogpeppe/go-internal v1.10.0/go.mod h1:UQnix2H7Ngw/k4C5ijL5+65zddjncjaFoBhdsK/akog=
-github.com/sashabaranov/go-openai v1.26.3 h1:Tjnh4rcvsSU68f66r05mys+Zou4vo4qyvkne6AIRJPI=
-github.com/sashabaranov/go-openai v1.26.3/go.mod h1:lj5b/K+zjTSFxVLijLSTDZuP7adOgerWeFyZLUhAKRg=
 github.com/sashabaranov/go-openai v1.32.5 h1:/eNVa8KzlE7mJdKPZDj6886MUzZQjoVHyn0sLvIt5qA=
 github.com/sashabaranov/go-openai v1.32.5/go.mod h1:lj5b/K+zjTSFxVLijLSTDZuP7adOgerWeFyZLUhAKRg=
 github.com/sirupsen/logrus v1.7.0/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0=
@@ -174,6 +172,7 @@ github.com/stretchr/testify v1.8.2/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o
 github.com/stretchr/testify v1.8.3/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
 github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
+github.com/tidwall/gjson v1.14.2/go.mod h1:/wbyibRr2FHMks5tjHJ5F8dMZh3AcwJEMf5vlfC0lxk=
 github.com/tidwall/gjson v1.17.0 h1:/Jocvlh98kcTfpN2+JzGQWQcqrPQwDrVEMApx/M5ZwM=
 github.com/tidwall/gjson v1.17.0/go.mod h1:/wbyibRr2FHMks5tjHJ5F8dMZh3AcwJEMf5vlfC0lxk=
 github.com/tidwall/match v1.1.1 h1:+Ho715JplO36QYgwN9PGYNhgZvoUSc9X2c80KVTi+GA=
@@ -181,6 +180,8 @@ github.com/tidwall/match v1.1.1/go.mod h1:eRSPERbgtNPcGhD8UCthc6PmLEQXEWd3PRB5JT
 github.com/tidwall/pretty v1.2.0/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU=
 github.com/tidwall/pretty v1.2.1 h1:qjsOFOWWQl+N3RsoF5/ssm1pHmJJwhjlSbZ51I6wMl4=
 github.com/tidwall/pretty v1.2.1/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU=
+github.com/tidwall/sjson v1.2.5 h1:kLy8mja+1c9jlljvWTlSazM7cKDRfJuR/bOJhcY5NcY=
+github.com/tidwall/sjson v1.2.5/go.mod h1:Fvgq9kS/6ociJEDnK0Fk1cpYF4FIW6ZF7LAe+6jwd28=
 github.com/twitchyliquid64/golang-asm v0.15.1 h1:SU5vSMR7hnwNxj24w34ZyCi/FmDZTkS4MhqMhdFk5YI=
 github.com/twitchyliquid64/golang-asm v0.15.1/go.mod h1:a1lVb/DtPvCB8fslRZhAngC2+aY1QWCk3Cedj/Gdt08=
 github.com/ugorji/go/codec v1.2.11 h1:BMaWp1Bb6fHwEtbplGBGJ498wD+LKlNSl25MjdZY4dU=
diff --git a/internal/server/web/proxy/middleware.go b/internal/server/web/proxy/middleware.go
index 30b9eb0..9ce91ab 100644
--- a/internal/server/web/proxy/middleware.go
+++ b/internal/server/web/proxy/middleware.go
@@ -23,6 +23,7 @@ import (
 	"github.com/bricks-cloud/bricksllm/internal/util"
 	"github.com/gin-gonic/gin"
 	"github.com/tidwall/gjson"
+	"github.com/tidwall/sjson"
 	"go.uber.org/zap"
 
 	goopenai "github.com/sashabaranov/go-openai"
@@ -763,7 +764,13 @@ func getMiddleware(cpm CustomProvidersManager, rm routeManager, pm PoliciesManag
 
 		if c.FullPath() == "/api/providers/openai/v1/chat/completions" {
 			ccr := &goopenai.ChatCompletionRequest{}
-			err = json.Unmarshal(body, ccr)
+			// this is a hack around an open issue in go-openai.
+			// https://github.com/sashabaranov/go-openai/issues/884
+			cleaned, err := sjson.Delete(string(body), "response_format.json_schema")
+			if err != nil {
+				logWithCid.Warn("removing response_format.json_schema", zap.Error(err))
+			}
+			err = json.Unmarshal([]byte(cleaned), ccr)
 			if err != nil {
 				logError(logWithCid, "error when unmarshalling chat completion request", prod, err)
 				return