SillyTavern 1.19.0

Backends

• Anthropic: Added support for Claude Fable 5 and 5.1, Claude Opus 4.8 and 5, Claude Sonnet 5.
• OpenAI: Added support for GPT-5.6 models, GPT-6 Astra.
• Other providers: Added support for Gemini 3.5/3.6/3.7 Flash models, GLM-5.2, and DeepSeek V4 Flash Vision Exp.
• Google AI Studio: Model list now fetches all pages.
• Fireworks AI: Updated model fetching; added reasoning effort, reasoning display, and session affinity for prompt caching.
• OpenRouter: Added optional logprobs support and refreshed provider list.
• NanoGPT: Refreshed provider list.
• Pollinations: Added keyed and keyless endpoint selection; updated TTS model aliases.
• DeepSeek: Added low reasoning effort.
• Generic Text Completion: Model list is now shown in a select.
• NovelAI: Preserve zero temperature for Math1; updated account information endpoint.
• Updated Gemini TTS to Gemini 3.1 Flash TTS Preview, added GLM-5.2 to Z.AI, removed MiniMax TTS GroupId requirement, and updated BFL API endpoints.
• Custom OpenAI-compatible sources: Added macro substitution in custom headers and request bodies; improved remote tokenizer validation.

Improvements

• World Info: "Apply Current Sorting" now supports ascending and descending order, configurable start and step values, and live validation.
• World Info: Renaming lorebooks now updates chat, character, and persona links.
• Chat Completion: Added an expand editor button to quick prompts.
• /addswipe no longer reloads the entire chat.
• Chat files with invalid headers are no longer silently overwritten, and chats with an invalid final line remain accessible with a degraded preview.
• New chat branches and checkpoints now receive fresh integrity identifiers.
• Non-ASCII chat names now use distinct backup keys and throttles.
• Deleting messages now also removes associated tool-call messages.
• Improved performance when sorting World Info entries, listing plugins, sorting images by date, and handling autocomplete on mobile.

Macros

• Variable macros can now access array elements and object properties.
• Added {{defaultExpression}} ,{{lastExpression}} , and{{availableExpressions}} macros for Character Expressions.
• Fixed scoped comment macros.
• Fixed pipe characters in macro arguments while pipe/filter tokenizing remains disabled.
• Fixed trailing whitespace in variable macros.

STscript

• /expression-list can filter custom expressions and supports additional return formats.
• Fixed inflated /tokens results for OpenAI tokenizers.
• Fixed event type emitted by /note-position .

Extensions

• Added MessageFormatter , allowing extensions to transform message content before regex processing, after regex processing, or after Markdown conversion.
• Character Expressions: Improved handling of custom expressions and fallback values.
• ComfyUI: History lookup now uses only the current prompt and ignores non-image outputs.
• Fixed multimodal caption requests for Text Generation WebUI.
• Extension discovery now ignores folders without a manifest.

Server & Security

• Blocked localhost and.localhost aliases from bypassing private-address checks in/api/search/visit .
• Added rate limiting to account reset requests.
• Tightened npm package source restrictions.
• Fixed CORS proxy responses retaining compression headers after decompression.
• Fixed boolean parsing in environment variable migrations.

Bug Fixes

• Fixed connection profile switching leaving the previous Chat Completion source active.
• Fixed duplicate tool-call IDs when providers repeat tool metadata while streaming.
• Provider error responses returned with HTTP 200 now show the provider error instead of the HTTP status text.
• Fixed Quick Reply overwrite cancellation and replacement dialog label.
• Fixed whitespace-only reasoning blocks leaving visible controls.
• Fixed group avatars ignoring the "Never resize avatars" setting.
• Fixed tag filters remaining visible after their last assigned entity is removed.
• Fixed Character Expressions errors with missing default-expression labels.
• Fixed character renaming when an optional source directory does not exist.
• Fixed Chromium password managers detecting proxy access-key fields as passwords.
• Fixed Chub URL parsing and stale autocomplete observers.
• Fixed crashes when a chat is deleted during search or recent-chat scanning.
• Fixed BYAF imports reading unrelated bytes from pooled buffers.

Community updates

• Refactor getUniqueName utility for allowBaseName option by @Wolfsblvt in #5602
• fix /tokens command returning inflated count for OpenAI API by @Reithan in #5601
• Add expand editor button to CC quick prompts by @CasualAutopsy in #5607
• Fix stale chat bound lore name after rename by @unnaturaldeveloper in #5610
• Fix emitted event type in note-position command by @Cohee1207 in #5624
• feat(openai): resolve macros in Custom additional body, exclude body, and headers by @manthanawgan in #5627
• Fix mobile lag from inactive autocomplete resize handlers by @Tantoofaaz777 in #5635
• Make parseChubURL clean URLs before relying on length by @Rojikku in #5604
• Feat/update persona lore by @Cohee1207 in #5637
• Feat/New features for character expressions by @leandrojofre in #5574
• Add message indicating that the 'Request mode reasoning' checkbox controls whether reasoning is generated at the source, for Deepseek API by @Feldherren in #5633
• fix mislabelled popup for "Replace existing Quick Reply set" by @underscorex86 in #5662
• chore: Sync NanoGPT providers: Tensorix, and Xiaomi by @DeathStalker471 in #5646
• Update outdated readme-zh_tw.md by @40436michael in #5639
• Update outdated readme-zh_cn.md and readme-ja_jp.md by @realyxl in #5659
• fix(autocomplete): guard MutationObserver against detached textarea by @mekineer-com in #5660
• Fix: Disable Incomplete Pipe/Filter Tokenizing to Prevent Breaking Macros with Pipe Characters in Arguments by @Wolfsblvt in #5644
• Lorebook "Apply Current Sorting" — Order control, ascending mode, step size, and live validation feedback by @Wolfsblvt in #5653
• Fix: Scoped comment macro {{//}}...{{///}} not removing its content by @Wolfsblvt in #5643
• Add MessageFormatter : a structured hook system for extensions to transform message content pre-DOM by @Wolfsblvt in #5652
• Pollinations: Add API endpoint selection by @CloudCompile in #5625
• Enforce stricter npm source restrictions in .npmrc by @Cohee1207 in #5663
• Add rate limit to account reset by @Cohee1207 in #5603
• Macros: Access array and object elements (#4383) by @blueberrys in #5649
• Improve remote tokenizer encode validation by @Cohee1207 in #5665
• Temporarily comment out allow-remote setting in .npmrc due to npm bug by @Cohee1207 in #5668
• Add gemini-3.5-flash to Google AI Studio and Vertex model lists by @Tosd0 in #5675
• change novelai user information to be called from image.novelai.net by @underscorex86 in #5814
• Add glm-5.2 to contextMap by @Samueras in #5770
• Update TTS model from Gemini 2.5 to 3.1 in TTS Extension by @Samueras in #5778
• Update TTS model from Gemini 2.5 to 3.1 in TTS Extension (#5778) by @Wolfsblvt in #5824
• Add claude-fable-5 support to Claude and OpenAI-compatible request builders by @TheLonelyDevil9 in #5757
• Openrouter: Enable logprobs if requested by user by @lukasstraub2 in #5804
• Optimize World Info entry sorting to avoid O(n^2) lookups by @ransxd in #5809
• Fix translation for 'Persona Description' in French by @maxime-fleury in #5830
• Add Claude Opus 4.8, GPT-5.6 models, and migrate Gemini 3.1 Flash Lite and Gemini image models to stable by @Jasonnor in #5845
• Fix: ignore local third-party extensions during core linting by @Wolfsblvt in #5847
• Fix: remove trailing whitespace from variable macros by @Wolfsblvt in #5848
• Fix whitespace-only reasoning block controls by @DragonFSKY in #5636
• Sync OpenRouter providers list by @cloak1505 in #5686
• chore: Sync NanoGPT providers: UOMI and Wafer by @DeathStalker471 in #5707
• perf(util): read each file's mtime once when getImages sorts by date by @tgies in #5689
• perf(plugins): list plugin dirs without per-entry statSync by @tgies in #5690
• fix: fetch only current prompt from ComfyUI history endpoint by @frankschubert in #5790
• Fail chat integrity check on unparseable headers instead of silently overwriting by @Wolfsblvt in #5928
• fix: reject localhost and .localhost domains in /api/search/visit to prevent SSRF bypass by @kings9527 in #5749
• Fix connection profile switch leaving the previous chat completion source active by @Wolfsblvt in #5930
• Update BFL generation and polling endpoints to api.bfl.ai by @AndSi-327 in #5681
• DeepSeek: Add/enable low reasoning effort by @0x4kgi in #5924
• Fix crash when a chat is deleted during a search/recent scan by @Max-Gomez in #5871
• Don't do a full chat reload from /addswipe by @alpha-omicron in #5903
• Verify GPT-5.6 support and refresh OpenAI model list by @Wolfsblvt in #5932
• Add Claude Opus 5 / Sonnet 5 and Gemini 3.7 Flash / 3.6 Flash / 3.5 Flash-Lite by @Jasonnor in #5883
• fix: skip non-image ComfyUI outputs by @CBOSSX in #5910
• fix: use exact ArrayBuffer slices for BYAF imports by @Moli13337 in #5917
• fix: remove GroupId requirement from MiniMax TTS by @guozi-lab in #5920
• fix: show full Generic textgen model list in a select by @Trahloc in #5897
• Skip extension folders without a manifest during discovery by @Wolfsblvt in #5934
• fix(tags): drop filters for tags with no assigned entities by @mtibke in #5911
• Fireworks: Update model fetching because /v1/models is broken by @Christoph-D in #5831
• fix: correct malformed multimodal caption request for oobabooga by @bbastex in #5915
• Prevent proxy access keys from triggering password-manager prompts in Chromium-based browsers by @CodeBoy2006 in #5913
• fix(expressions): guard against null/undefined default-expression labels by @Lockyer228 in #5938
• fix: never resize avatars option does not work for group chat avatar by @m-petra-fn in #5936
• Mint a fresh integrity slug for new branches and checkpoints by @Wolfsblvt in #5943
• Give non-ASCII chat names distinct backup keys and throttles by @Wolfsblvt in #5944
• Use provider error fields instead of statusText for HTTP 200 errors by @Wolfsblvt in #5945
• Fireworks AI: Set session affinity header for improved caching by @Christoph-D in #5826
• Fireworks: Request and process reasoning by @Christoph-D in #5947
• Fix duplicate tool call IDs if provider repeats id, type, name by @Christoph-D in #5948
• fix: parse boolean values in env migrations by @primorLee in #5950
• fix(chat): delete associated tool calls with messages by @LazyPeterGriffin in #5949
• Update TavernAI link in README by @m98bw in #5987
• fix: preserve zero NovelAI Math1 temperature by @tandede in #5965
• Return a degraded preview instead of dropping a chat whose last line is unparseable by @shoemoney in #5969
• Google AI Studio: Fetch all model pages by @saitewasreset in #5954
• Fix Quick Reply overwrite cancellation by @QiuLsG in #6005
• fix: resolve Pollinations TTS model aliases by @voodoohop in #6010
• Fix: Avoid cpSync crash when renaming characters by @chansey97 in #6012
• Fix CORS proxy forwarding raw zstd-compressed bytes to the client by @X00LA in #6007
• Add image embed for DeepSeek V4 Flash Vision Exp (#5964) by @fishBone000 in #5996
• Add Claude Fable 5.1 and GPT-6 Astra support by @Wolfsblvt in #6015
• Update release version number by @Wolfsblvt in #6035
• 1.19.0 by @Wolfsblvt in #6036