# GPT-6.1 Terra: what’s new, API price and Terra vs Sol By GO AI Team · October 27, 2026 Updated: October 27, 2026 GPT-6.1 Terra arrived on October 26. See its API price, image-input capabilities, Terra vs Sol trade-offs and a document exercise with a checkable answer. ![A hand comparing a paper invoice with a document and table on a laptop.](https://goaichat.app/assets/img/blog/news-2026-10/gpt-6-1-terra.webp) AI-generated editorial illustration; not an actual product screenshot or a model test result. ## The short version Terra is a new option to evaluate for document and visual tasks. Its lower API token price does not establish that it beats Sol or Astra. Start with one task and an answer key, then compare the effort needed to reach a correct result. OpenAI added GPT-6.1 Terra on October 26, 2026. It positions the model around efficient visual reasoning, computer use and writing. For everyday users, the useful question is whether it can turn source material into a correct, usable answer with less editing. ## At a glance - **Context window:** 1,050,000 tokens [OpenAI: GPT-6.1 Terra](https://developers.openai.com/api/docs/models/gpt-6.1-terra) - **Access:** gpt-6.1-terra [OpenAI: GPT-6.1 Terra](https://developers.openai.com/api/docs/models/gpt-6.1-terra) ## What changed in GPT-6.1 Terra? *What the source says* The model accepts text and images and produces text. Its published context limit is 1,050,000 tokens, with up to 128,000 output tokens. Image understanding is not native image generation; image tools and computer-use workflows depend on the application. Do not assume a chat app exposes every API capability. Source: [OpenAI API changelog](https://developers.openai.com/api/docs/changelog) Source: [OpenAI: GPT-6.1 Terra](https://developers.openai.com/api/docs/models/gpt-6.1-terra) ## GPT-6.1 Terra price: what does it cost? *What the source says* Standard API rates are $1 per million input tokens and $5 per million output tokens; cached input is $0.05. For 10,000 uncached input tokens and 1,000 output tokens, that is $0.015 before tools or additional reasoning output. Requests over 272,000 input tokens have higher rates. API billing is separate from consumer subscriptions. Source: [OpenAI: GPT-6.1 Terra](https://developers.openai.com/api/docs/models/gpt-6.1-terra) ## Terra vs Sol: choose by accepted results *GO AI analysis* Sol’s standard input/output rates are $2/$10 per million tokens. Terra therefore has half those token rates, but not necessarily half the cost per completed task. Keep the source, prompt and available tools identical. Record errors, retries, elapsed time and editing effort. Include Sol or Astra when a hard reasoning task needs a stronger comparison; a larger version number alone is not a ranking. Source: [OpenAI: GPT-6.1 Sol](https://developers.openai.com/api/docs/models/gpt-6.1-sol) ## Try a document extraction task you can verify *Practical guide* Use this fictional invoice before sharing any real document. A correct table has A17, 40 units, 12 November and payment status unknown. The expected total is 40, not 80: an invoice amount is not proof of payment. If the model guesses that it is paid, the task fails. This is our answer key, not a recorded Terra response. A screenshot can test visual reading separately when image input is available. ```text Use only this fictional invoice: Invoice A17; design review; amount 40 units; due 12 November; payment status not stated. Return a table with invoice ID, amount, due date and payment status. Write unknown for missing information. Then explain what cannot be concluded. Do not infer payment from the amount or due date. ``` ### Try a prompt with your own details Availability of this exact model in GO AI is not confirmed. The links open GO AI with its currently offered models, not a guaranteed selection of the model discussed here. [Get the app on the App Store](https://apps.apple.com/app/id6742322421) [Try GO AI web chat](https://app.goaichat.app/) ## What this means for GO AI users Availability of this exact model in GO AI is not confirmed. The links open GO AI with its currently offered models, not a guaranteed selection of the model discussed here. ## Questions, answered ### Does Terra generate images directly? Its model specification lists image input and text output. A separate image-generation tool may be available in an application; that is different from the base model producing images. ### Is this a Terra benchmark? No. The example is an original exercise with an answer key. It lets you compare results without presenting invented model scores. ### Can I try this exact model in GO AI? Availability of this exact model in GO AI is not confirmed. The links open GO AI with its currently offered models, not a guaranteed selection of the model discussed here. ## Try the exercise in GO AI Use a model available in GO AI to try the text exercise below. Check the result against the source before using it. [Get the app on the App Store](https://apps.apple.com/app/id6742322421) [Try GO AI web chat](https://app.goaichat.app/) ## Read next - [AI prompts for work](https://goaichat.app/blog/ai-prompts-for-work) - [Compare AI models for your task](https://goaichat.app/blog/which-ai-model-for-which-task) ## Sources and editorial note Reported facts are linked to their sources. GO AI analysis is our interpretation; suggested prompts are not recorded test results. - [OpenAI API changelog](https://developers.openai.com/api/docs/changelog) - [OpenAI: GPT-6.1 Terra](https://developers.openai.com/api/docs/models/gpt-6.1-terra) - [OpenAI: GPT-6.1 Sol](https://developers.openai.com/api/docs/models/gpt-6.1-sol)