From e42ef9a95d27e3b3ed10f11871c0e9ec4a9c2760 Mon Sep 17 00:00:00 2001
From: gl11tchy <211956100+gl11tchy@users.noreply.github.com>
Date: Wed, 18 Feb 2026 13:43:22 +0000
Subject: [PATCH] feat(registry): add Claude Sonnet 4.6 model definitions

Add claude-sonnet-4-6 to:
- Claude OAuth provider (model_definitions_static_data.go)
- Antigravity model config (thinking + non-thinking entries)
- GitHub Copilot provider (model_definitions.go)

Ref: https://docs.anthropic.com/en/docs/about-claude/models
---
 internal/registry/model_definitions.go             | 12 ++++++++++++
 internal/registry/model_definitions_static_data.go | 14 ++++++++++++++
 2 files changed, 26 insertions(+)

diff --git a/internal/registry/model_definitions.go b/internal/registry/model_definitions.go
index abd943bc..118aa7a2 100644
--- a/internal/registry/model_definitions.go
+++ b/internal/registry/model_definitions.go
@@ -306,6 +306,18 @@ func GetGitHubCopilotModels() []*ModelInfo {
 			MaxCompletionTokens: 64000,
 			SupportedEndpoints:  []string{"/chat/completions"},
 		},
+		{
+			ID:                  "claude-sonnet-4.6",
+			Object:              "model",
+			Created:             now,
+			OwnedBy:             "github-copilot",
+			Type:                "github-copilot",
+			DisplayName:         "Claude Sonnet 4.6",
+			Description:         "Anthropic Claude Sonnet 4.6 via GitHub Copilot",
+			ContextLength:       200000,
+			MaxCompletionTokens: 64000,
+			SupportedEndpoints:  []string{"/chat/completions"},
+		},
 		{
 			ID:                  "claude-sonnet-4",
 			Object:              "model",
diff --git a/internal/registry/model_definitions_static_data.go b/internal/registry/model_definitions_static_data.go
index 26716804..f366308d 100644
--- a/internal/registry/model_definitions_static_data.go
+++ b/internal/registry/model_definitions_static_data.go
@@ -40,6 +40,18 @@ func GetClaudeModels() []*ModelInfo {
 			MaxCompletionTokens: 128000,
 			Thinking:            &ThinkingSupport{Min: 1024, Max: 128000, ZeroAllowed: true, DynamicAllowed: false},
 		},
+		{
+			ID:                  "claude-sonnet-4-6",
+			Object:              "model",
+			Created:             1771286400, // 2026-02-17
+			OwnedBy:             "anthropic",
+			Type:                "claude",
+			DisplayName:         "Claude 4.6 Sonnet",
+			Description:         "Best combination of speed and intelligence",
+			ContextLength:       200000,
+			MaxCompletionTokens: 64000,
+			Thinking:            &ThinkingSupport{Min: 1024, Max: 128000, ZeroAllowed: true, DynamicAllowed: false},
+		},
 		{
 			ID:                  "claude-opus-4-5-20251101",
 			Object:              "model",
@@ -896,7 +908,9 @@ func GetAntigravityModelConfig() map[string]*AntigravityModelConfig {
 		"claude-sonnet-4-5-thinking": {Thinking: &ThinkingSupport{Min: 1024, Max: 128000, ZeroAllowed: true, DynamicAllowed: true}, MaxCompletionTokens: 64000},
 		"claude-opus-4-5-thinking":   {Thinking: &ThinkingSupport{Min: 1024, Max: 128000, ZeroAllowed: true, DynamicAllowed: true}, MaxCompletionTokens: 64000},
 		"claude-opus-4-6-thinking":   {Thinking: &ThinkingSupport{Min: 1024, Max: 128000, ZeroAllowed: true, DynamicAllowed: true}, MaxCompletionTokens: 64000},
+		"claude-sonnet-4-6-thinking": {Thinking: &ThinkingSupport{Min: 1024, Max: 128000, ZeroAllowed: true, DynamicAllowed: true}, MaxCompletionTokens: 64000},
 		"claude-sonnet-4-5":          {MaxCompletionTokens: 64000},
+		"claude-sonnet-4-6":          {MaxCompletionTokens: 64000},
 		"gpt-oss-120b-medium":        {},
 		"tab_flash_lite_preview":     {},
 	}