refactor: streamline usage reporting by consolidating record publishi…

internal/runtime/executor/usage_helpers.go

@@ -73,17 +73,7 @@ func (r *usageReporter) publishWithOutcome(ctx context.Context, detail usage.Det
 		return
 	}
 	r.once.Do(func() {
-		usage.PublishRecord(ctx, usage.Record{
-			Provider:    r.provider,
-			Model:       r.model,
-			Source:      r.source,
-			APIKey:      r.apiKey,
-			AuthID:      r.authID,
-			AuthIndex:   r.authIndex,
-			RequestedAt: r.requestedAt,
-			Failed:      failed,
-			Detail:      detail,
-		})
+		usage.PublishRecord(ctx, r.buildRecord(detail, failed))
 	})
 }
 
@@ -96,20 +86,39 @@ func (r *usageReporter) ensurePublished(ctx context.Context) {
 		return
 	}
 	r.once.Do(func() {
-		usage.PublishRecord(ctx, usage.Record{
-			Provider:    r.provider,
-			Model:       r.model,
-			Source:      r.source,
-			APIKey:      r.apiKey,
-			AuthID:      r.authID,
-			AuthIndex:   r.authIndex,
-			RequestedAt: r.requestedAt,
-			Failed:      false,
-			Detail:      usage.Detail{},
-		})
+		usage.PublishRecord(ctx, r.buildRecord(usage.Detail{}, false))
 	})
 }
 
+func (r *usageReporter) buildRecord(detail usage.Detail, failed bool) usage.Record {
+	if r == nil {
+		return usage.Record{Detail: detail, Failed: failed}
+	}
+	return usage.Record{
+		Provider:    r.provider,
+		Model:       r.model,
+		Source:      r.source,
+		APIKey:      r.apiKey,
+		AuthID:      r.authID,
+		AuthIndex:   r.authIndex,
+		RequestedAt: r.requestedAt,
+		Latency:     r.latency(),
+		Failed:      failed,
+		Detail:      detail,
+	}
+}
+
+func (r *usageReporter) latency() time.Duration {
+	if r == nil || r.requestedAt.IsZero() {
+		return 0
+	}
+	latency := time.Since(r.requestedAt)
+	if latency < 0 {
+		return 0
+	}
+	return latency
+}
+
 func apiKeyFromContext(ctx context.Context) string {
 	if ctx == nil {
 		return ""

internal/runtime/executor/usage_helpers_test.go

@@ -1,6 +1,11 @@
 package executor
 
-import "testing"
+import (
+	"testing"
+	"time"
+
+	"github.com/router-for-me/CLIProxyAPI/v6/sdk/cliproxy/usage"
+)
 
 func TestParseOpenAIUsageChatCompletions(t *testing.T) {
 	data := []byte(`{"usage":{"prompt_tokens":1,"completion_tokens":2,"total_tokens":3,"prompt_tokens_details":{"cached_tokens":4},"completion_tokens_details":{"reasoning_tokens":5}}}`)
@@ -41,3 +46,19 @@ func TestParseOpenAIUsageResponses(t *testing.T) {
 		t.Fatalf("reasoning tokens = %d, want %d", detail.ReasoningTokens, 9)
 	}
 }
+
+func TestUsageReporterBuildRecordIncludesLatency(t *testing.T) {
+	reporter := &usageReporter{
+		provider:    "openai",
+		model:       "gpt-5.4",
+		requestedAt: time.Now().Add(-1500 * time.Millisecond),
+	}
+
+	record := reporter.buildRecord(usage.Detail{TotalTokens: 3}, false)
+	if record.Latency < time.Second {
+		t.Fatalf("latency = %v, want >= 1s", record.Latency)
+	}
+	if record.Latency > 3*time.Second {
+		t.Fatalf("latency = %v, want <= 3s", record.Latency)
+	}
+}

internal/usage/logger_plugin.go

@@ -87,9 +87,10 @@ type modelStats struct {
 	Details       []RequestDetail
 }
 
-// RequestDetail stores the timestamp and token usage for a single request.
+// RequestDetail stores the timestamp, latency, and token usage for a single request.
 type RequestDetail struct {
 	Timestamp time.Time  `json:"timestamp"`
+	LatencyMs int64      `json:"latency_ms"`
 	Source    string     `json:"source"`
 	AuthIndex string     `json:"auth_index"`
 	Tokens    TokenStats `json:"tokens"`
@@ -198,6 +199,7 @@ func (s *RequestStatistics) Record(ctx context.Context, record coreusage.Record)
 	}
 	s.updateAPIStats(stats, modelName, RequestDetail{
 		Timestamp: timestamp,
+		LatencyMs: normaliseLatency(record.Latency),
 		Source:    record.Source,
 		AuthIndex: record.AuthIndex,
 		Tokens:    detail,
@@ -332,6 +334,9 @@ func (s *RequestStatistics) MergeSnapshot(snapshot StatisticsSnapshot) MergeResu
 			}
 			for _, detail := range modelSnapshot.Details {
 				detail.Tokens = normaliseTokenStats(detail.Tokens)
+				if detail.LatencyMs < 0 {
+					detail.LatencyMs = 0
+				}
 				if detail.Timestamp.IsZero() {
 					detail.Timestamp = time.Now()
 				}
@@ -463,6 +468,13 @@ func normaliseTokenStats(tokens TokenStats) TokenStats {
 	return tokens
 }
 
+func normaliseLatency(latency time.Duration) int64 {
+	if latency <= 0 {
+		return 0
+	}
+	return latency.Milliseconds()
+}
+
 func formatHour(hour int) string {
 	if hour < 0 {
 		hour = 0

internal/usage/logger_plugin_test.go

@@ -0,0 +1,96 @@
+package usage
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	coreusage "github.com/router-for-me/CLIProxyAPI/v6/sdk/cliproxy/usage"
+)
+
+func TestRequestStatisticsRecordIncludesLatency(t *testing.T) {
+	stats := NewRequestStatistics()
+	stats.Record(context.Background(), coreusage.Record{
+		APIKey:      "test-key",
+		Model:       "gpt-5.4",
+		RequestedAt: time.Date(2026, 3, 20, 12, 0, 0, 0, time.UTC),
+		Latency:     1500 * time.Millisecond,
+		Detail: coreusage.Detail{
+			InputTokens:  10,
+			OutputTokens: 20,
+			TotalTokens:  30,
+		},
+	})
+
+	snapshot := stats.Snapshot()
+	details := snapshot.APIs["test-key"].Models["gpt-5.4"].Details
+	if len(details) != 1 {
+		t.Fatalf("details len = %d, want 1", len(details))
+	}
+	if details[0].LatencyMs != 1500 {
+		t.Fatalf("latency_ms = %d, want 1500", details[0].LatencyMs)
+	}
+}
+
+func TestRequestStatisticsMergeSnapshotDedupIgnoresLatency(t *testing.T) {
+	stats := NewRequestStatistics()
+	timestamp := time.Date(2026, 3, 20, 12, 0, 0, 0, time.UTC)
+	first := StatisticsSnapshot{
+		APIs: map[string]APISnapshot{
+			"test-key": {
+				Models: map[string]ModelSnapshot{
+					"gpt-5.4": {
+						Details: []RequestDetail{{
+							Timestamp: timestamp,
+							LatencyMs: 0,
+							Source:    "[email protected]",
+							AuthIndex: "0",
+							Tokens: TokenStats{
+								InputTokens:  10,
+								OutputTokens: 20,
+								TotalTokens:  30,
+							},
+						}},
+					},
+				},
+			},
+		},
+	}
+	second := StatisticsSnapshot{
+		APIs: map[string]APISnapshot{
+			"test-key": {
+				Models: map[string]ModelSnapshot{
+					"gpt-5.4": {
+						Details: []RequestDetail{{
+							Timestamp: timestamp,
+							LatencyMs: 2500,
+							Source:    "[email protected]",
+							AuthIndex: "0",
+							Tokens: TokenStats{
+								InputTokens:  10,
+								OutputTokens: 20,
+								TotalTokens:  30,
+							},
+						}},
+					},
+				},
+			},
+		},
+	}
+
+	result := stats.MergeSnapshot(first)
+	if result.Added != 1 || result.Skipped != 0 {
+		t.Fatalf("first merge = %+v, want added=1 skipped=0", result)
+	}
+
+	result = stats.MergeSnapshot(second)
+	if result.Added != 0 || result.Skipped != 1 {
+		t.Fatalf("second merge = %+v, want added=0 skipped=1", result)
+	}
+
+	snapshot := stats.Snapshot()
+	details := snapshot.APIs["test-key"].Models["gpt-5.4"].Details
+	if len(details) != 1 {
+		t.Fatalf("details len = %d, want 1", len(details))
+	}
+}

sdk/cliproxy/usage/manager.go

@@ -17,6 +17,7 @@ type Record struct {
 	AuthIndex   string
 	Source      string
 	RequestedAt time.Time
+	Latency     time.Duration
 	Failed      bool
 	Detail      Detail
 }