diff --git a/src/hooks/preemptive-compaction.aws-bedrock.test.ts b/src/hooks/preemptive-compaction.aws-bedrock.test.ts
index 9ce47ac8c..ce4174a29 100644
--- a/src/hooks/preemptive-compaction.aws-bedrock.test.ts
+++ b/src/hooks/preemptive-compaction.aws-bedrock.test.ts
@@ -42,7 +42,7 @@ describe("preemptive-compaction aws-bedrock-anthropic", () => {
             modelID: "claude-sonnet-4-6",
             finish: true,
             tokens: {
-              input: 170000,
+              input: 800000,
               output: 1000,
               reasoning: 0,
               cache: { read: 10000, write: 0 },
diff --git a/src/hooks/preemptive-compaction.test.ts b/src/hooks/preemptive-compaction.test.ts
index ebf90c208..f7b7344c6 100644
--- a/src/hooks/preemptive-compaction.test.ts
+++ b/src/hooks/preemptive-compaction.test.ts
@@ -142,7 +142,7 @@ describe("preemptive-compaction", () => {
     const hook = createPreemptiveCompactionHook(ctx as never, {} as never)
     const sessionID = "ses_high"
 
-    // 170K input + 10K cache = 180K → 90% of 200K
+    // 800K input + 10K cache = 810K → 81% of 1M (GA limit for 4.6 models)
     await hook.event({
       event: {
         type: "message.updated",
@@ -154,7 +154,7 @@ describe("preemptive-compaction", () => {
             modelID: "claude-sonnet-4-6",
             finish: true,
             tokens: {
-              input: 170000,
+              input: 800000,
               output: 1000,
               reasoning: 0,
               cache: { read: 10000, write: 0 },
@@ -190,7 +190,7 @@ describe("preemptive-compaction", () => {
             modelID: "claude-sonnet-4-6",
             finish: true,
             tokens: {
-              input: 170000,
+              input: 800000,
               output: 1000,
               reasoning: 0,
               cache: { read: 10000, write: 0 },
@@ -267,7 +267,7 @@ describe("preemptive-compaction", () => {
             modelID: "claude-sonnet-4-6",
             finish: true,
             tokens: {
-              input: 170000,
+              input: 800000,
               output: 0,
               reasoning: 0,
               cache: { read: 10000, write: 0 },
@@ -313,7 +313,7 @@ describe("preemptive-compaction", () => {
             modelID: "claude-sonnet-4-6",
             finish: true,
             tokens: {
-              input: 170000,
+              input: 800000,
               output: 0,
               reasoning: 0,
               cache: { read: 10000, write: 0 },
@@ -357,7 +357,7 @@ describe("preemptive-compaction", () => {
             modelID: "claude-sonnet-4-6",
             finish: true,
             tokens: {
-              input: 170000,
+              input: 800000,
               output: 0,
               reasoning: 0,
               cache: { read: 10000, write: 0 },
@@ -386,7 +386,7 @@ describe("preemptive-compaction", () => {
             modelID: "claude-sonnet-4-6",
             finish: true,
             tokens: {
-              input: 170000,
+              input: 800000,
               output: 0,
               reasoning: 0,
               cache: { read: 10000, write: 0 },
@@ -504,7 +504,7 @@ describe("preemptive-compaction", () => {
               modelID: "claude-sonnet-4-6",
               finish: true,
               tokens: {
-                input: 170000,
+                input: 800000,
                 output: 0,
                 reasoning: 0,
                 cache: { read: 10000, write: 0 },
@@ -544,7 +544,7 @@ describe("preemptive-compaction", () => {
                 modelID: "claude-sonnet-4-6",
                 finish: true,
                 tokens: {
-                  input: 170000,
+                  input: 800000,
                   output: 0,
                   reasoning: 0,
                   cache: { read: 10000, write: 0 },
@@ -576,7 +576,7 @@ describe("preemptive-compaction", () => {
     const hook = createPreemptiveCompactionHook(ctx as never, {} as never)
     const sessionID = "ses_recompact"
 
-    // given - first compaction cycle
+    // given - first compaction cycle (810K > 78% of 1M GA limit)
     await hook.event({
       event: {
         type: "message.updated",
@@ -588,7 +588,7 @@ describe("preemptive-compaction", () => {
             modelID: "claude-sonnet-4-6",
             finish: true,
             tokens: {
-              input: 170000,
+              input: 800000,
               output: 0,
               reasoning: 0,
               cache: { read: 10000, write: 0 },
@@ -619,7 +619,7 @@ describe("preemptive-compaction", () => {
             modelID: "claude-sonnet-4-6",
             finish: true,
             tokens: {
-              input: 170000,
+              input: 800000,
               output: 0,
               reasoning: 0,
               cache: { read: 10000, write: 0 },
@@ -657,7 +657,7 @@ describe("preemptive-compaction", () => {
             modelID: "claude-sonnet-4-6",
             finish: true,
             tokens: {
-              input: 170000,
+              input: 800000,
               output: 0,
               reasoning: 0,
               cache: { read: 10000, write: 0 },