diff --git a/internal/translator/antigravity/claude/antigravity_claude_request.go b/internal/translator/antigravity/claude/antigravity_claude_request.go
index 8c1a38c5..3a6ba4b5 100644
--- a/internal/translator/antigravity/claude/antigravity_claude_request.go
+++ b/internal/translator/antigravity/claude/antigravity_claude_request.go
@@ -477,9 +477,6 @@ func ConvertClaudeRequestToAntigravity(modelName string, inputRawJSON []byte, _
 				effort = strings.ToLower(strings.TrimSpace(v.String()))
 			}
 			if effort != "" {
-				if effort == "max" {
-					effort = "high"
-				}
 				out, _ = sjson.Set(out, "request.generationConfig.thinkingConfig.thinkingLevel", effort)
 			} else {
 				out, _ = sjson.Set(out, "request.generationConfig.thinkingConfig.thinkingLevel", "high")
diff --git a/internal/translator/antigravity/claude/antigravity_claude_request_test.go b/internal/translator/antigravity/claude/antigravity_claude_request_test.go
index 39dc493d..696240ef 100644
--- a/internal/translator/antigravity/claude/antigravity_claude_request_test.go
+++ b/internal/translator/antigravity/claude/antigravity_claude_request_test.go
@@ -1235,64 +1235,3 @@ func TestConvertClaudeRequestToAntigravity_ToolAndThinking_NoExistingSystem(t *t
 		t.Errorf("Interleaved thinking hint should be in created systemInstruction, got: %v", sysInstruction.Raw)
 	}
 }
-
-func TestConvertClaudeRequestToAntigravity_AdaptiveThinking_EffortLevels(t *testing.T) {
-	tests := []struct {
-		name     string
-		effort   string
-		expected string
-	}{
-		{"low", "low", "low"},
-		{"medium", "medium", "medium"},
-		{"high", "high", "high"},
-		{"max", "max", "high"},
-	}
-
-	for _, tt := range tests {
-		tt := tt
-		t.Run(tt.name, func(t *testing.T) {
-			inputJSON := []byte(`{
-				"model": "claude-opus-4-6-thinking",
-				"messages": [{"role": "user", "content": [{"type": "text", "text": "Hello"}]}],
-				"thinking": {"type": "adaptive"},
-				"output_config": {"effort": "` + tt.effort + `"}
-			}`)
-
-			output := ConvertClaudeRequestToAntigravity("claude-opus-4-6-thinking", inputJSON, false)
-			outputStr := string(output)
-
-			thinkingConfig := gjson.Get(outputStr, "request.generationConfig.thinkingConfig")
-			if !thinkingConfig.Exists() {
-				t.Fatal("thinkingConfig should exist for adaptive thinking")
-			}
-			if thinkingConfig.Get("thinkingLevel").String() != tt.expected {
-				t.Errorf("Expected thinkingLevel %q, got %q", tt.expected, thinkingConfig.Get("thinkingLevel").String())
-			}
-			if !thinkingConfig.Get("includeThoughts").Bool() {
-				t.Error("includeThoughts should be true")
-			}
-		})
-	}
-}
-
-func TestConvertClaudeRequestToAntigravity_AdaptiveThinking_NoEffort(t *testing.T) {
-	inputJSON := []byte(`{
-		"model": "claude-opus-4-6-thinking",
-		"messages": [{"role": "user", "content": [{"type": "text", "text": "Hello"}]}],
-		"thinking": {"type": "adaptive"}
-	}`)
-
-	output := ConvertClaudeRequestToAntigravity("claude-opus-4-6-thinking", inputJSON, false)
-	outputStr := string(output)
-
-	thinkingConfig := gjson.Get(outputStr, "request.generationConfig.thinkingConfig")
-	if !thinkingConfig.Exists() {
-		t.Fatal("thinkingConfig should exist for adaptive thinking without effort")
-	}
-	if thinkingConfig.Get("thinkingLevel").String() != "high" {
-		t.Errorf("Expected default thinkingLevel \"high\", got %q", thinkingConfig.Get("thinkingLevel").String())
-	}
-	if !thinkingConfig.Get("includeThoughts").Bool() {
-		t.Error("includeThoughts should be true")
-	}
-}