Subtitles Translator – Change Log

December 02, 2025 ^New

• Fix to correctly restore the last selected language of the Google and Yandex translators.
• Now auto-restores any unsaved subtitle edits on accidental window close.

November 22, 2025

Add Gemini 3 Pro model. It comes with state-of-the-art reasoning and precise instruction adherence.

November 18, 2025

Add OpenAI ChatGPT 5.1 Instant and 5.1 Thinking Models. Please check the official guide for details.

November 16, 2025

• Add Claude Claude Haiku 4.5 and Claude Sonnet 4.5 models support.
• Cost is reduced approximately 2-3 times for the DeepSeek chat and thinking models.

October 23, 2025

Fix “Structured” translation mode failure for certain subtitle files. Further improved translation timing sync with the original content in the structured mode. If you still notice any misalignment or missing content in the translation, please report back to me.

October 11, 2025

• A new “Structured” translation mode for superior translation with better synchronisation with source timing.
  • AI model is asked to generate a structured output with prioritised synchronisation with the original subtitles.
  • Slightly more expensive as it requires more processing and iterations over the translated content.
  • Best for auto-generated subtitles where sentences may span multiple rows.
• Auto-restore last translator settings/configs on page load.
• Now shows a “Save Original” button when source subtitles are changed, allowing you to download manually edited subtitles.
• A new editor action to split subtitle rows by a given maximum length for improved readability.

September 22 2025

Add Grok 4 Fast (Reasoning and Non-Reasoning) models, which claim to bring in cost-efficient intelligence, outperforming Grok 3 Mini across reasoning benchmarks while slashing costs.

September 18, 2025

Updated DeepSeek Chat and Reasoner models to v3.1 (Official Release). Also lowered the mode prices as the API has become a bit cheaper.

August 17, 2025

• Add multiple GPT-5 new models. GPT-5 is a unified, multi-model AI system designed for various tasks, incorporating specialised models to optimise performance based on context and user intent.

August 09 2025

• Add multiple Anthropic Claude translation models. These are best known for their superb natural processing capabilities and translation compared to others.

August 05 2025

• xAI Grok is now available for subtitle translations. More about Grok models…
• Along with some minor fixes/tweaks
  • You can now edit/move/re-try an empty subtitle row as well
  • Doubled the free re-try subtitles block rows to the previous limit. You can now almost re-translate 40% of the file rows free of charge.

August 02 2025

• Add a new option, under LLM model settings, to skip post-translation validation. This should be handy if you want to translate a file that contains multiple languages in the source subtitle.

June 25 2025 

• Add support for Gemini 1.5 Flash Lite model.

May 09, 2025

• Some minor UI and style tweaks. Also enabled GPT-4.1 mini model.

May 03, 2025

• Add support for Gemini 2.5 Flash, Gemini 2.5 Pro and GPT-4.1 models.

April 12, 2025

• Some minor performance improvements to the DeepSeek translator.
• Fixed a glitch in the Yandex translator, causing an incorrect warning about partial translation in certain cases.

March 01, 2025

• Add DeepSeek for subtitle translations. This translator tops the leader board among large-language models and has exceptional translation capabilities at a reasonable price – at least for certain language pairs. More about DeepSeek…

Feb 20, 2025

• Add support for Gemini 2.0 Flash and Flash-lite models with enhanced performance and improved capabilities. Learn more…

Feb 02, 2025

• Now support OpenAI o3 – the newest, most cost-efficient model in the reasoning series.
• Lowered cost for the o1 model. More about o3 model…

December 25, 2024

• Add support for the OpenAI o1 model, which enables translation of certain subtitles with better translation context and improved translation quality. Learn more about o1 model…

October 17, 2024

• Tweak prompt and config parameters of Chat-GPT and Gemini models for improved accuracy and line persistence.

October 06, 2024

• Add support for Gemini 1.5 Flash-8B. Learn more…

October 06, 2024

• Add support for Gemini 1.5 Flash-8B. Learn more…

September 27, 2024

• Updated pricing for the OpenAI and Gemini models (reduced for the latest models).
• Integrated a new moderation API for OpenAI to improve moderation accuracy.

August 09, 2024

• Support partial re-translation of a lines block after successful translation.
• Improved translation quality by providing more context for LLM models (OpenAI, Gemini, etc), which translate batches of subtitle rows at a time. Learn more…
• Integrated Gemini 1.5 Flash with improved quality, lower price and more languages. Learn more…

July 20, 2024

• Now supports OpenAI GPT-4o mini – a small, cost-efficient model with superior textual intelligence.

June 08, 2024

• Integrate the Stripe payment gateway. For now, this payment model can only be used to load/top up the balance. Learn more…

May 19, 2024

• Add support for Google Gemini 1.5 flash and OpenAI GPT-4o models.
• Both of these new models are not only more powerful and faster, but are also cost-effective too.

May 05, 2024

• Google Gemini 1.5 Pro model is now available for translation. You can now also resume failed translations in case of any intermittent server errors.

March 30, 2024

• Google Gemini 1.0 Pro model is now available for translation. It’s still in beta, and is rate-limited, but so far it’s showing very promising results. Learn more…

February 21, 2024

• GPT-3.5 Turbo model now internally uses gpt-3.5-turbo-0125 model (with reduced cost).
• DeepL now also supports the Arabic language.

January 07, 2024

• Support new OpenAI ChatGPT-4-Turbo model.
• The GPT-3.5 Turbo model now internally uses gpt-3.5-turbo-1106 model. Learn more…

January 05, 2024

• Option to review and edit existing subtitle translations.
• For now, this feature is only available for paid translations (both existing and new).

September 25, 2023

• Fixed intermittent subtitle rows’ translations skipping when using the Google translator.
• Improved Google and Yandex translation speed and performance.

September 03, 2023

• Integrated OpenAI moderation APIs. All OpenAI translations now must conform to their Usage Policies.

August 13, 2023

• Support for account balance top-up using Cryptocurrencies – via the Coinbase service.

August 06, 2023

• Enable Chat-GPT 4.0 model support for small to medium translations. Still experimenting with the price to value ratio here.

May 20, 2023

• Add OpenAI Chat-GPT translator model parameters and prompt extension support.

March 16, 2023

• Support OpenAI Chat-GPT translation Learn More…

March 06, 2023

• Support paragraph (new default) and per-line (legacy behaviour) translation modes for DeepL and Microsoft Azure translators.

February 18, 2023

• Support for multiple target languages translation per subtitles file.
• This also works with multiple uploaded subtitles files, and with all free and paid translators. So, you can actually do the bulk processing with minimal effort. Learn More… [Demo Video]

July 16, 2022

• Support Turkish and Indonesian in the DeepL translator.

June 11, 2022

• Support Regular Expression search in the Find and Replace dialog.
• With great power comes great responsibility, so read and learn more about these (if never used before) to see how you can make use of their full potential of.

April 16, 2022

• Demo or free mode for the Microsoft Translator (with limit).
• Improve and optimise UI when switching between paid translators.
• Finally, some enhancements to improve the overall usability of the find and replace dialog i.e. case insensitive search, multi-word find/replace and multiple files searching support.

September 18, 2021

• Multi-file translation support for all translators. Including free and paid translation options. [Demo Video]

July 10, 2021

• New free demo option for DeepL translator.

May 8, 2021

• Support thirteen new European languages for DeepL translator.

March 22, 2021

• Support for the .ASS subtitle file format.

January 01, 2021

• DeepL translation is now finally supported. Yeah! Also, the subtitles editor is now optimised for mobile viewing.
• WEBVTT format is now also supported?

December 01, 2020

• Payment model to use Microsoft Transltor.

August 08, 2020

• Option to merge original and translated subtitles. You can now also save in-progress files for future editing. [Demo Video]

May 28, 2020

• Now supports Microsoft Azure translation (with a monthly quota limit).

February 04, 2020

• Now supports YouTube’s .SBV subtitle file format.

August 04, 2019

• Now keeps the original line breaks from the source subtitle file.

July 07, 2019

• Keeps the original formatting tags, such as bold, italic, and font, in the translated subtitle file.

April 14, 2019

• Support translating SUB files along with SRT files.