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Language learning ChatGPT plugins were a small but visible group of third-party tools that extended ChatGPT with translation, foreign-language explanation, conversational practice, and tutor-matching capabilities. They were available from March 23, 2023, when OpenAI opened the plugin platform with twelve external partners, until the plugin store closed on April 9, 2024. The category produced one of the most prominent inaugural plugins of the entire ecosystem, Speak, and a handful of follow-on entries that linked ChatGPT to outside tutoring marketplaces, English proficiency drills, and general-purpose translation services. After the plugin platform shut down, most of these tools shifted to Custom GPTs hosted on the GPT Store or to standalone web applications.
This article serves as a historical reference. The plugins listed here are no longer reachable through the original plugin interface; the developers behind them either rebuilt their integrations as Custom GPTs, redirected users to standalone web products, or paused their ChatGPT-facing distribution after April 2024.
OpenAI announced ChatGPT plugins on March 23, 2023. The launch slate included twelve external partners (Expedia, FiscalNote, Instacart, KAYAK, Klarna, Milo, OpenTable, Shopify, Slack, Speak, Wolfram, and Zapier) plus a first-party browsing plugin and a code interpreter.[1][2] Of those partners, Speak was the only one explicitly devoted to language learning, although Wolfram also handled translation queries through its computational knowledge layer. Access was restricted to a private alpha for several weeks before the plugin store opened to all ChatGPT Plus subscribers on May 12, 2023.[3]
| Date | Event |
|---|---|
| March 1, 2023 | OpenAI launches the Whisper API, the same speech-recognition system later used by Speak in its mobile app[4] |
| March 23, 2023 | OpenAI announces ChatGPT plugins; Speak is one of twelve external launch partners[1][5] |
| March 23, 2023 | Speak publishes a blog post describing its plugin as the company's first move beyond English-as-a-second-language teaching[5] |
| May 12, 2023 | Plugin store opens broadly to ChatGPT Plus users[3] |
| May 14, 2023 | Approved-plugin lists from the period record Speak as the only listing tagged for language learning, with Open Trivia and a small number of translation tools sitting in adjacent tags[6] |
| June 20, 2023 | Directories begin cataloging additional language-leaning plugins including AmazingTalker, Duoduo English, and MixerBox Translate[7][8][9] |
| August 31, 2023 | Speak announces a $16 million Series B-2 financing led in part by the OpenAI Startup Fund, citing the plugin partnership as a credibility signal[10] |
| November 6, 2023 | OpenAI DevDay introduces GPTs, the successor framework[11] |
| January 10, 2024 | GPT Store opens, making Custom GPTs the default distribution channel[12] |
| March 19, 2024 | Plugin store closes; new plugin chats are no longer possible[13] |
| April 9, 2024 | All remaining plugin conversations end and the plugin platform fully shuts down[13] |
The language learning category was always informal. OpenAI did not publish a fixed taxonomy during the plugin era; third-party directories sorted plugins by tag, and the same tool sometimes appeared under "Language Learning," "Education," "Translation," or "Productivity" depending on the listing. AmazingTalker and Outschool, for example, also appeared in the education chatgpt plugins category. For a broader map of the surrounding categories, see chatgpt plugin categories.
The large language model behind ChatGPT in 2023, initially GPT-3.5 and then GPT-4 for paid users, was already strong at translation and multilingual conversation. What plugins added was structure around that raw capability: a tutoring layer that knew when to translate versus when to coach, a connection to live human tutors who could be booked for paid follow-up, audio-based proficiency exercises tied to a specific test format, and a first-party translator that could call out to its own backend rather than relying on the model's general knowledge. Typical capabilities included three-mode language assistance covering translation, task explanation, and phrase explanation, search for human tutors filtered by language and price, English proficiency practice modeled on the Duolingo English Test, and back-and-forth translation across major language pairs.
A single ChatGPT session could load up to three plugins at once. That limit shaped how learners chose tools: a student preparing for the Duolingo English Test might pair Duoduo English with Speak for vocabulary explanations, while a learner planning a trip might combine Speak with AmazingTalker and a travel plugin for itinerary help.
The table below lists plugins for which launch information can be confirmed in at least two independent sources. Other tools described themselves as language learning aids but could not be verified and are omitted.
| Plugin | Function | Developer | Verified period |
|---|---|---|---|
| Speak | Translation, task explanation, foreign-phrase explanation, AI tutor mode | Speak Easy Inc. | March 23, 2023 launch partner[1][5] |
| AmazingTalker | Search and booking of one-to-one language tutors | AmazingTalker | Catalogued from June 20, 2023[7] |
| Duoduo English | English proficiency drills modeled on the Duolingo English Test | Duoduo College | Catalogued from June 20, 2023[8] |
| MixerBox Translate | General translation, vocabulary explanation, simulated conversation | MixerBox | Catalogued from June 20, 2023[9] |
Speak was one of two education-leaning plugins on the March 23, 2023 launch slate, and the only one whose entire product was language learning. It was built by Speak Easy Inc., a Y Combinator company founded in 2016 by Connor Zwick and Andrew Hsu.[14] Before the plugin partnership, Speak had focused on English-as-a-second-language tutoring, particularly in South Korea, where it became one of the country's most-downloaded education apps.[14] The ChatGPT plugin marked the company's first public move into teaching languages other than English.[5]
The plugin advertised itself as "your AI-powered language tutor" and exposed three endpoints in its OpenAPI manifest. The translate endpoint handled requests for a specific phrase or word in another language. The explainTask endpoint covered open-ended requests of the form "how do I say or do X in language Y," where the user had not yet supplied a concrete phrase. The explainPhrase endpoint clarified the meaning, register, and cultural context of a foreign-language phrase the user had already encountered.[15][16] In practice, ChatGPT routed the user's question to whichever endpoint best matched the intent, then narrated the response in conversational English with examples and follow-up suggestions. Reviews from the period noted that the plugin handled at least ten target languages, including Spanish, French, German, Italian, Russian, Portuguese, Japanese, Chinese, and Korean.[17]
Speak's relationship with OpenAI ran deeper than a typical plugin partnership. The company had received a Series B investment from the OpenAI Startup Fund in November 2022 and was already using OpenAI's Whisper speech-recognition API for its mobile speaking-companion feature.[4] On August 31, 2023, the company announced a $16 million Series B-2 financing led in part by the OpenAI Startup Fund, citing the ChatGPT plugin and the broader OpenAI relationship as accelerants for international expansion.[10] Speak later released a language-tutor Custom GPT, and in December 2024 raised a $78 million Series C at a $1 billion valuation.
AmazingTalker was a Taiwan-based marketplace founded by Abner Chao that connected learners to language tutors worldwide. The platform was launched in 2016 and by the time of the plugin era hosted thousands of teachers covering more than 140 languages and subjects.[7] Its ChatGPT plugin exposed a single primary command, findTeachers, which accepted parameters for target language, learner proficiency, price band, schedule, and tutor nationality.[7] When a user asked ChatGPT for a beginner Mandarin tutor under a certain hourly rate, the plugin returned a ranked list of bookable instructors with names, descriptions, video introductions, course links, ratings, trial-class prices, and full-course rates.
AmazingTalker straddled the language learning and education categories. Third-party directories sometimes listed it under "Education" because of its broader academic tutoring options, but in day-to-day use the language tutors were the dominant draw and most prompts asked for help with English, Spanish, Chinese, or Japanese. Like Outschool, which appeared in the education category and also offered language classes, AmazingTalker did not deliver lessons inside ChatGPT itself; the plugin was a discovery layer that sent learners to amazingtalker.com to book and pay for the actual session.
Duoduo English was a focused English-proficiency plugin built by the team behind Duoduo College, a study site oriented toward learners preparing for the Duolingo English Test (DET).[8] Catalogued in plugin directories from June 20, 2023, it offered three structured drill modes that mirrored the format of the DET itself.[8] In Read then Write mode, the plugin presented one to three short questions and asked the learner to compose a paragraph in response to each; ChatGPT then returned a reference answer and detailed feedback. In Writing Sample mode, the plugin issued open prompts and graded the learner's response on argument quality and grammar. In Listen and Type mode, the plugin pointed the learner to an audio clip and asked for a transcription, then compared the submitted text against the original.[8] The plugin was not affiliated with Duolingo, the company behind the test; "Duoduo" was a separate study brand. It was one of the few third-party language tools that explicitly named a specific external standardized test as its target.
MixerBox Translate was published by MixerBox, a Taipei-based developer that released roughly a dozen consumer-oriented ChatGPT plugins covering music, news, weather, and translation. Catalogued from June 20, 2023, MixerBox Translate offered three commands: translate for converting phrases between language pairs, explain for clarifying the meaning and usage of a foreign word, and task for guidance on how to express a particular action in a target language.[9] MixerBox marketed the plugin as "your AI language tutor," with example flows covering Spanish, French, Chinese, German, and Japanese.[9] It sat closer to a general-purpose translator than Speak, which presented itself as a tutor first. The two overlapped in feature surface but differed in tone: Speak emphasized cultural register and speaking practice, while MixerBox Translate emphasized literal accuracy. Both retired in April 2024 with the rest of the plugin platform.
Language-focused sessions during the plugin era followed three common patterns. The first was tutored translation: a learner loaded Speak, asked how to express an idea in a target language, and let ChatGPT route the question through the translate or explainTask endpoint. Speak returned a candidate translation along with notes on register, alternative phrasings, and cultural context, and ChatGPT wove those notes into a conversational reply. The second was test preparation: a learner studying for the Duolingo English Test loaded Duoduo English, drilled timed prompts, and used ChatGPT's feedback to identify recurring grammar weaknesses. The third was tutor matching: a learner who decided that AI alone was insufficient loaded AmazingTalker, asked for tutors in a specific language under a specific budget, and clicked through to amazingtalker.com to book paid one-to-one sessions. These workflows pushed users into deliberate prompt engineering habits, including naming the target language explicitly, stating the learner's current proficiency, and asking the plugin to flag idioms that did not translate literally.
OpenAI announced the wind-down in early 2024 and gave roughly three weeks of notice between the March 19, 2024 freeze on new conversations and the April 9, 2024 shutdown.[13] Discovery was poor: the store was a flat list with limited search and no ratings. The three-plugins-per-chat limit forced students to choose between Speak, a translation plugin, and a general-purpose research tool in any single session. Plugins also required developers to host an external server and maintain an OpenAPI manifest, while GPTs allowed lighter no-code authoring and still permitted Actions for full external integrations. OpenAI wanted to consolidate around the GPT Store as a marketplace where it could later share revenue with creators.[12]
Language learning was also a category where the base model itself was unusually strong. By the second half of 2023, ChatGPT could already translate competently, explain grammar, and conduct multi-turn conversational practice without any plugin. That meant the marginal value of a language plugin was narrower than in domains like booking flights or running symbolic mathematics. Once Custom GPTs arrived in November 2023 and Voice Mode reached free users in late 2023, much of the day-to-day language practice that had used plugins moved into native ChatGPT features or specialized GPTs.
Language-plugin functionality moved to three kinds of successor product. First, Custom GPTs in the GPT Store: after the store opened on January 10, 2024, Speak shipped a language-tutor GPT, and a long tail of independent tutoring GPTs covering specific languages and proficiency levels filled out the rest of the niche. Second, dedicated AI-first language apps. Speak itself, Praktika, and similar consumer products absorbed users who wanted full conversational practice with speech recognition. Third, native ChatGPT capabilities. Voice Mode, broadly available in late 2023, let the base chatbot hold spoken conversation in a target language without any plugin assistance.
The language learning category overlapped heavily with the education chatgpt plugins grouping. Speak appeared in both lists at most directories during the plugin era, and AmazingTalker frequently did as well. The boundary was not sharp: a tutor-matching tool that focused on Mandarin could be filed under either label. Travel and lifestyle categories also pulled in language tools when the surrounding workflow was a trip itinerary or a relocation plan. For the live-era category map, see chatgpt plugin categories.
See also: ChatGPT Plugins, ChatGPT Plugin Categories and Language Learning