ChatLLM vs NanoGPT
We give ChatLLM a 3.0 GPA and NanoGPT a 3.4, out of 4.0. ChatLLM grades higher on ease of use and platforms. NanoGPT grades higher on value for money and the free plan. They get the same grade on features.
Price, platforms and features side by side. The table says where each price was read and when.
ChatLLM
Multi-model AI assistant and agent platform from Abacus.AI
NanoGPT
Pay-as-you-go access to hundreds of AI models on the web and by API
How we grade them
| 3.0GPAChatLLMVery good | 3.4GPANanoGPTVery good | |
|---|---|---|
| Value for money | BBasic is $10 a user a month, a little under the middle for a paid assistant, and it covers every chat, image and video model with 20,000 credits. A set of lighter models stays unlimited. The agent is capped at 3 limited tasks, though, and lifting that means Pro at $20. | ANo subscription needed: top up from $1 and pay per use, with text models billed at the provider's list price and no markup. Pro is $12 a month for 60 million input tokens a week on its included models. If you only chat now and then, that beats a flat monthly plan. |
| Free plan and trial | FNothing is free. There's no free plan and no free trial, so the first look costs money. The nearest thing to a taster is the first month of Basic at $7 instead of $10, and that month comes with 14,000 credits, not 20,000. | BPay As You Go is $0 a month and comes with one free model, on the web only. Every other model is billed from a prepaid balance. So it's a taster more than a plan to live on. |
| Features | AMore than 100 models, with RouteLLM choosing one for each task if you leave the picker on Auto. The agent builds and hosts apps, makes slides, documents and research reports, and runs tasks on triggers. Add image and video generation, file and data analysis, web search and a team workspace with projects. | AThe directory lists 641 text models, 224 image, 183 video, 98 audio and 13 3D, all from one chat window and one balance. The API follows OpenAI's and Anthropic's formats and covers images, video, audio, embeddings and web search too. |
| Ease of use | A4.9 from about 3,600 App Store ratings. Leave the picker on Auto and it chooses the model, so you don't need to know which is which. Credits are the bit to watch, as heavy models, images and video use them faster. | BOpen the site and start typing. You can even do it in an anonymous session with no account. Thinking in tokens and topping up a balance takes some getting used to, though, and there's no rating on record to go by, so a B. |
| Platforms and integrations | AWeb, iPhone and Android apps with a voice mode, a Chrome extension, and Abacus AI Desktop with a coding agent and CLI. It connects to Slack, Microsoft Teams, Google Drive, SharePoint, Confluence, Salesforce and Gmail, and there's an API that routes between models. | BA website with a broad API, and that's it. The pricing page mentions no desktop or phone apps, and no integrations are listed. |
| Best for | many AI models on one $10 subscription | paying per message instead of per month |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: ChatLLM and NanoGPT. How we grade
Where they differ
- ChatLLM starts at $10 per user / month (Basic). NanoGPT starts at $12 per month (Pro), or pay as you go at model list prices.
- NanoGPT has a free plan. ChatLLM does not.
- Only ChatLLM lists iOS and Android apps.
- Only ChatLLM lists a browser extension.
- ChatLLM also covers AI agents and app builder.
At a glance
| ChatLLM | NanoGPT | |
|---|---|---|
| Pricing | Paid | Free plan |
| Starts at | $10 per user / month (Basic) | $12 per month (Pro), or pay as you go at model list prices |
| Free plan | None | Pay As You Go costs $0 a month and includes one free model, on the web only. Every other model is billed per use from a prepaid balance. |
| Free trial | None listed | None listed |
| Web | ||
| iOS | ||
| Android | ||
| Browser extension | ||
| Made by | Abacus.AI, Inc. | NanoGPT LLC |
| Price read from | abacus.ai | nano-gpt.com |
| Checked | Oct 6, 2026 | Oct 9, 2026 |
Who each one suits
ChatLLM
- People who want many frontier models at a low per-user price
- Teams that want chat, an agent and app building in one subscription
- Developers who want an API that routes between models
NanoGPT
- Occasional users who would rather pay per message than subscribe
- Developers who want one API key for many model providers
- People who want to pay with cryptocurrency or without an account
Worth knowing
ChatLLM
- There is no free plan or free trial. Billing is monthly at $10 per user, or $20 per user with Pro.
- Usage runs on credits: Basic has 20,000 a month, and heavy models, images, video and agent tasks use them faster. A set of lighter models stays unlimited.
- Basic limits the Abacus AI Agent to 3 tasks of limited complexity and Abacus AI Studio to 3 conversations. Pro removes both caps.
- Abacus.AI states that it does not give refunds based on the output or performance of its models and agents.
NanoGPT
- The free allowance is a single model on the web; everything else needs a prepaid balance or the Pro plan.
- Pro's weekly allowance covers only the models included in the subscription; others, such as Claude Opus 5.5, are still billed per use.
- Pinning a specific provider by hand adds 5%, and bring-your-own-key requests are billed at 5% of the normal model cost.
- Access is through the website and the API; the pricing page mentions no desktop or mobile apps.
Key features
ChatLLM
- 100+ models with automatic routing
- Chat with models from OpenAI, Anthropic, Google, xAI and open-weight labs, or leave the picker on Auto and RouteLLM chooses a model for each task.
- Abacus AI Agent
- A general-purpose agent that builds and hosts apps from a description, creates slides, documents and research reports, and automates work with tasks and triggers.
- Image and video generation
- Image models include Nano Banana Pro, GPT Image and FLUX. Video generation runs through Abacus AI Studio with models such as Veo, Kling and Seedance.
- Documents, data and web search
- Analyzes uploaded PDFs, Word and PowerPoint files, charts data from CSV and Excel files, searches the web and runs generated code in a playground beside the chat.
- Team workspace and connectors
- Invite any number of users at the per-user price, organize chats and files in projects, and connect Slack, Microsoft Teams, Google Drive, SharePoint, Confluence and other systems.
- Mobile apps, extension and desktop tools
- iOS and Android apps with voice mode, a Chrome extension, and Abacus AI Desktop with a coding agent and CLI are included with the subscription.
NanoGPT
- Hundreds of models in one place
- The model directory lists 641 text, 224 image, 183 video, 98 audio and 13 3D models, including ChatGPT, Claude and Gemini, all used from one chat interface and one balance.
- Per-use billing at list prices
- Text models are billed at the provider's list price per million tokens with no markup, and deposits carry no percentage fee. Each API response reports the exact cost charged.
- OpenAI-compatible API
- The API follows OpenAI's chat completions and Responses formats and Anthropic's Messages format, and also covers images, video, audio, embeddings, web search and batch jobs.
- No stored prompts by default
- Prompt and conversation content is not kept on NanoGPT's servers unless you turn on sync or sharing, and the service can be used in an anonymous session with no account.
- Card and crypto payments
- A balance can be started from $1 by card or $0.10 in cryptocurrency. Selected API endpoints also accept accountless crypto payments with no API key.
- TEE-backed models
- Some models run in trusted execution environments, and the API returns attestation reports and request signatures so that this can be verified.
Plans
ChatLLM
Basic$10
per user / month
Every chat, image and video model, 20,000 credits a month, 3 AI Agent tasks of limited complexity and limited Abacus AI Studio use.
Pro$20
per user / month (Basic plus a $10 upgrade)
30,000 credits a month, unrestricted Abacus AI Agent and Studio use while credits last, a stronger agent and the always-on SuperComputer.
Abacus.AI EnterpriseFrom $5000
billing period not stated
The separate enterprise platform for organizations that need enterprise features, sold through the sales team.
NanoGPT
Pay As You Go$0
Every text, image, video and voice model on web and API, billed per use from a balance topped up from $1 by card or $0.10 in crypto. One free model on the web.
Pro$12
per month
60 million included input tokens a week on the subscription's text models, 100 images a day, and 5% off eligible paid text models, on web and API.
Ways to pay less
ChatLLM
- Other savings
$7 for the first month of Basic
New subscribers are charged $7 instead of $10 for the first month, then $10 billed monthly. The discounted month comes with 14,000 credits instead of 20,000.
NanoGPT
- Other savings
Volume pricing for large users
NanoGPT invites large users of its platform or API to get in touch for custom pricing and dedicated support.
