chore(release): Update version to v1.4.397

Update Anthropic SDK to v1.20.0 and reorganize model definitions

.vscode/settings.json

@@ -134,6 +134,7 @@
 		"mvdan",
 		"mychat",
 		"mygroup",
+		"neturl",
 		"nicksnyder",
 		"nixpkgs",
 		"nometa",

CHANGELOG.md

@@ -1,5 +1,15 @@
 # Changelog
 
+## v1.4.397 (2026-01-31)
+
+### PR [#1979](https://github.com/danielmiessler/Fabric/pull/1979) by [ksylvan](https://github.com/ksylvan): Update Anthropic SDK to v1.20.0 and reorganize model definitions
+
+- Feat: update Anthropic SDK to v1.20.0 and reorganize model definitions
+- Bump `anthropic-sdk-go` dependency from v1.19.0 to v1.20.0
+- Add deprecation notice for pre-February 2026 legacy models
+- Add new Claude Sonnet 4.0 and Opus 4.0 model aliases
+- Extend 1M context beta support to all Sonnet 4 variants
+
 ## v1.4.396 (2026-01-30)
 
 ### PR [#1975](https://github.com/danielmiessler/Fabric/pull/1975) by [koriyoshi2041](https://github.com/koriyoshi2041): feat: add suggest_moltbot_command pattern for Moltbot (formerly Clawdbot) CLI

cmd/fabric/version.go

@@ -1,3 +1,3 @@
 package main
 
-var version = "v1.4.396"
+var version = "v1.4.397"

go.mod

@@ -3,7 +3,7 @@ module github.com/danielmiessler/fabric
 go 1.25.1
 
 require (
-	github.com/anthropics/anthropic-sdk-go v1.19.0
+	github.com/anthropics/anthropic-sdk-go v1.20.0
 	github.com/atotto/clipboard v0.1.4
 	github.com/aws/aws-sdk-go-v2 v1.41.0
 	github.com/aws/aws-sdk-go-v2/config v1.32.6

go.sum

@@ -40,6 +40,8 @@ github.com/anmitsu/go-shlex v0.0.0-20200514113438-38f4b401e2be h1:9AeTilPcZAjCFI
 github.com/anmitsu/go-shlex v0.0.0-20200514113438-38f4b401e2be/go.mod h1:ySMOLuWl6zY27l47sB3qLNK6tF2fkHG55UZxx8oIVo4=
 github.com/anthropics/anthropic-sdk-go v1.19.0 h1:mO6E+ffSzLRvR/YUH9KJC0uGw0uV8GjISIuzem//3KE=
 github.com/anthropics/anthropic-sdk-go v1.19.0/go.mod h1:WTz31rIUHUHqai2UslPpw5CwXrQP3geYBioRV4WOLvE=
+github.com/anthropics/anthropic-sdk-go v1.20.0 h1:KE6gQiAT1aBHMh3Dmp1WgqnyZZLJNo2oX3ka004oDLE=
+github.com/anthropics/anthropic-sdk-go v1.20.0/go.mod h1:WTz31rIUHUHqai2UslPpw5CwXrQP3geYBioRV4WOLvE=
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
 github.com/apache/arrow/go/arrow v0.0.0-20211112161151-bc219186db40 h1:q4dksr6ICHXqG5hm0ZW5IHyeEJXoIJSOZeBLmWPNeIQ=
 github.com/apache/arrow/go/arrow v0.0.0-20211112161151-bc219186db40/go.mod h1:Q7yQnSMnLvcXlZ8RV+jwz/6y1rQTqbX6C82SndT52Zs=

internal/plugins/ai/anthropic/anthropic.go

@@ -36,22 +36,32 @@ func NewClient() (ret *Client) {
 	ret.maxTokens = 4096
 	ret.defaultRequiredUserMessage = "Hi"
 	ret.models = []string{
+		// The following models will be deprecated on February 19, 2026
 		string(anthropic.ModelClaude3_7SonnetLatest), string(anthropic.ModelClaude3_7Sonnet20250219),
 		string(anthropic.ModelClaude3_5HaikuLatest), string(anthropic.ModelClaude3_5Haiku20241022),
-		string(anthropic.ModelClaude3OpusLatest), string(anthropic.ModelClaude_3_Opus_20240229),
+		// The following are the current supported models
-		string(anthropic.ModelClaude_3_Haiku_20240307),
-		string(anthropic.ModelClaudeOpus4_20250514), string(anthropic.ModelClaudeSonnet4_20250514),
-		string(anthropic.ModelClaudeOpus4_1_20250805),
-		string(anthropic.ModelClaudeSonnet4_5),
-		string(anthropic.ModelClaudeSonnet4_5_20250929),
 		string(anthropic.ModelClaudeOpus4_5_20251101),
 		string(anthropic.ModelClaudeOpus4_5),
 		string(anthropic.ModelClaudeHaiku4_5),
 		string(anthropic.ModelClaudeHaiku4_5_20251001),
+		string(anthropic.ModelClaudeSonnet4_20250514),
+		string(anthropic.ModelClaudeSonnet4_0),
+		string(anthropic.ModelClaude4Sonnet20250514),
+		string(anthropic.ModelClaudeSonnet4_5),
+		string(anthropic.ModelClaudeSonnet4_5_20250929),
+		string(anthropic.ModelClaudeOpus4_0),
+		string(anthropic.ModelClaudeOpus4_20250514),
+		string(anthropic.ModelClaude4Opus20250514),
+		string(anthropic.ModelClaudeOpus4_1_20250805),
+		string(anthropic.ModelClaude_3_Haiku_20240307),
 	}
 
 	ret.modelBetas = map[string][]string{
-		string(anthropic.ModelClaudeSonnet4_20250514):   {"context-1m-2025-08-07"},
+		// Claude Sonnet 4 variants (1M context support)
+		string(anthropic.ModelClaudeSonnet4_20250514): {"context-1m-2025-08-07"},
+		string(anthropic.ModelClaudeSonnet4_0):        {"context-1m-2025-08-07"},
+		string(anthropic.ModelClaude4Sonnet20250514):  {"context-1m-2025-08-07"},
+		// Claude Sonnet 4.5 variants (1M context support)
 		string(anthropic.ModelClaudeSonnet4_5):          {"context-1m-2025-08-07"},
 		string(anthropic.ModelClaudeSonnet4_5_20250929): {"context-1m-2025-08-07"},
 	}

nix/pkgs/fabric/gomod2nix.toml

@@ -38,8 +38,8 @@ schema = 3
     version = "v1.3.3"
     hash = "sha256-jv7ZshpSd7FZzKKN6hqlUgiR8C3y85zNIS/hq7g76Ho="
   [mod."github.com/anthropics/anthropic-sdk-go"]
-    version = "v1.19.0"
+    version = "v1.20.0"
-    hash = "sha256-ubYeau5XL0tx4c/79L58rzJGOdOWs9z6WQOtN6mpgxw="
+    hash = "sha256-lIOrVT0vWNWhshc/3/UGOR4/EyBzNvTuXcgFQq3HR0k="
   [mod."github.com/apache/arrow/go/arrow"]
     version = "v0.0.0-20211112161151-bc219186db40"
     hash = "sha256-hcVrZsJuiRIDx13QDKCxUtZgmze6iFkwyjDvQxkzcR8="

nix/pkgs/fabric/version.nix

@@ -1 +1 @@
-"1.4.396"
+"1.4.397"