diff --git a/pkg/cache/cache.go b/pkg/cache/cache.go
index 581332a3..bc499aef 100644
--- a/pkg/cache/cache.go
+++ b/pkg/cache/cache.go
@@ -5,6 +5,7 @@ import (
 	"crypto/sha256"
 	"encoding/gob"
 	"encoding/hex"
+	"encoding/json"
 	"errors"
 	"io/fs"
 	"os"
@@ -71,7 +72,7 @@ func (c *Client) CacheDir() string {
 
 func (c *Client) cacheKey(key any) (string, error) {
 	hash := sha256.New()
-	if err := gob.NewEncoder(hash).Encode(key); err != nil {
+	if err := json.NewEncoder(hash).Encode(key); err != nil {
 		return "", err
 	}
 	digest := hash.Sum(nil)
diff --git a/pkg/hash/seed.go b/pkg/hash/seed.go
index d5e7ab8c..c8837637 100644
--- a/pkg/hash/seed.go
+++ b/pkg/hash/seed.go
@@ -1,13 +1,13 @@
 package hash
 
 import (
-	"encoding/gob"
+	"encoding/json"
 	"hash/fnv"
 )
 
 func Seed(input any) int {
 	h := fnv.New32a()
-	if err := gob.NewEncoder(h).Encode(input); err != nil {
+	if err := json.NewEncoder(h).Encode(input); err != nil {
 		panic(err)
 	}
 	return int(h.Sum32())
diff --git a/pkg/openai/client.go b/pkg/openai/client.go
index b8226c42..3f154d73 100644
--- a/pkg/openai/client.go
+++ b/pkg/openai/client.go
@@ -447,7 +447,7 @@ func override(left, right string) string {
 }
 
 func (c *Client) call(ctx context.Context, request openai.ChatCompletionRequest, transactionID string, partial chan<- types.CompletionStatus) (responses []openai.ChatCompletionStreamResponse, _ error) {
-	request.Stream = os.Getenv("GPTSCRIPT_INTERNAL_OPENAI_STREAMING") != "false"
+	streamResponse := os.Getenv("GPTSCRIPT_INTERNAL_OPENAI_STREAMING") != "false"
 
 	partial <- types.CompletionStatus{
 		CompletionID: transactionID,
@@ -459,7 +459,7 @@ func (c *Client) call(ctx context.Context, request openai.ChatCompletionRequest,
 
 	slog.Debug("calling openai", "message", request.Messages)
 
-	if !request.Stream {
+	if !streamResponse {
 		resp, err := c.c.CreateChatCompletion(ctx, request)
 		if err != nil {
 			return nil, err
diff --git a/pkg/types/completion.go b/pkg/types/completion.go
index b0b81774..48c18baf 100644
--- a/pkg/types/completion.go
+++ b/pkg/types/completion.go
@@ -21,7 +21,10 @@ type CompletionRequest struct {
 }
 
 func (r *CompletionRequest) GetCache() bool {
-	return r.Cache != nil && !*r.Cache
+	if r.Cache == nil {
+		return true
+	}
+	return *r.Cache
 }
 
 type CompletionTool struct {