# Abacus.AI Alternatives 2027: 11 Paid, Free & Open-Source

Source: https://zekaiwork.com/alternatives/abacus-ai/
Prices checked: 2026-11-13 (Zekai Price Ledger)

The best Abacus.AI alternatives in 2027 are ChatGPT (best overall, $20/mo), Claude (best free plan) and LibreChat (best open source, MIT). Abacus.AI itself starts at $10/mo. Zekai checked these prices on vendor pages on 13 Nov 2026; 8 more are compared below, including 4 with a free plan and 4 open source.

| Tool | Type | Starting price | Free plan limit | Licence | Best for | Price checked | Links |
|---|---|---|---|---|---|---|---|
| Abacus.AI (the tool being replaced) | — | $10/mo | No | — | — | 2026-11-13 | [pricing](https://abacus.ai/pricing) |
| ChatGPT | Free plan + paid | $20/mo | Free: Instant mode with 27K-token context; image, voice, research limited | — | Mainstream assistant with the widest ecosystem | 2026-11-13 | [site](https://chatgpt.com/) [pricing](https://help.openai.com/en/articles/6950777-what-is-chatgpt-plus) [Zekai page](https://zekaiwork.com/ai-tools/chatgpt/) |
| Claude | Free plan + paid | $17/mo | Free: limited usage every 5 hours and every week | — | Long documents, writing and coding with Claude models | 2026-11-13 | [site](https://claude.ai/) [pricing](https://claude.com/pricing) [Zekai page](https://zekaiwork.com/ai-tools/claude/) |
| Gemini | Free plan + paid | $4.99/mo | Free: Flash-Lite model, Deep Research, 15 GB storage | — | Google-account assistant with cheap upgrade tiers | 2026-11-13 | [site](https://gemini.google.com/) [pricing](https://gemini.google/subscriptions/) [Zekai page](https://zekaiwork.com/ai-tools/gemini/) |
| Perplexity | Free plan + paid | $17/mo | Free account exists; caps not shown on the Pro page | — | Cited research answers and deep research | 2026-11-13 | [site](https://www.perplexity.ai/) [pricing](https://www.perplexity.ai/pro) [Zekai page](https://zekaiwork.com/ai-tools/perplexity/) |
| Mistral AI (Le Chat) | Free plan + paid | $14.99/mo | Free: limited messages, web searches and coding sessions | — | European-built assistant with coding CLI | 2026-11-13 | [site](https://mistral.ai/) [pricing](https://mistral.ai/pricing) [Zekai page](https://zekaiwork.com/ai-tools/mistral-ai/) |
| Poe | Free | Free plan; paid price not published | Free access exists; limits not shown on the about page | — | Many AI bots and models in one app | 2026-11-13 | [site](https://poe.com/) [pricing](https://poe.com/about) [Zekai page](https://zekaiwork.com/ai-tools/poe/) |
| LibreChat | Open source | Free (self-hosted) | No limit (self-hosted) | MIT | Multi-user ChatGPT-style chat on your server |  | [site](https://www.librechat.ai/) [code](https://github.com/LibreChat-AI/LibreChat) [Zekai page](https://zekaiwork.com/free-open-source/librechat/) |
| Open WebUI | Open source | Free (self-hosted) | No limit (self-hosted) | Open WebUI License (BSD-style with a branding clause) (not OSI-approved) | Self-hosted chat for Ollama and OpenAI APIs |  | [site](https://openwebui.com/) [code](https://github.com/open-webui/open-webui) [Zekai page](https://zekaiwork.com/ai-tools/open-webui/) |
| LobeHub | Open source | Free (self-hosted) | No limit (self-hosted) | LobeHub Community License (Apache-2.0-based) (not OSI-approved) | Agent-team chat workspace you can host |  | [site](https://github.com/lobehub/lobehub) [code](https://github.com/lobehub/lobehub) [Zekai page](https://zekaiwork.com/ai-tools/lobehub/) |
| AnythingLLM | Open source | Free (self-hosted) | No limit (self-hosted) | MIT | Private document chat on your own machine |  | [site](https://anythingllm.com/) [code](https://github.com/Mintplex-Labs/anything-llm) [Zekai page](https://zekaiwork.com/free-open-source/anythingllm/) |
| Jan | Open source | Free (self-hosted) | No limit (self-hosted) | Apache-2.0 | Offline local models with an OpenAI-compatible API |  | [site](https://github.com/janhq/jan) [code](https://github.com/janhq/jan) [Zekai page](https://zekaiwork.com/free-open-source/jan/) |

## How each alternative compares with Abacus.AI

- **ChatGPT** (Free plan + paid, $20/mo, checked 2026-11-13): ChatGPT is one vendor's model line with a free plan whose Instant mode has a 27K-token context window; Abacus ChatLLM bundles 100+ models from several vendors from $10 a month with no free plan. Switch if you want one vendor's assistant with a free tier and voice, image and research features in a single app. Stay with Abacus.AI if you want Claude, Gemini, DeepSeek and Grok models side by side for $10 a month instead of $20.
- **Claude** (Free plan + paid, $17/mo, checked 2026-11-13): Claude Pro includes Claude Code, Projects, Claude in Chrome and Microsoft 365 connectors, with usage windows reset every 5 hours; Abacus Basic meters 20,000 credits a month across all models. Switch if you work mainly with Claude models for writing and coding and want Claude Code included in the plan. Stay with Abacus.AI if you want models from many vendors, image and video generators in one $10 plan.
- **Gemini** (Free plan + paid, $4.99/mo, checked 2026-11-13): Gemini's Google AI Plus is $4.99 a month with 400 GB of Google storage and double the free usage; Abacus Basic is $10 and has no storage bundle. Switch if you live in Gmail and Drive and want 400 GB of storage plus an assistant for under $5 a month. Stay with Abacus.AI if you want non-Google models such as Claude, GPT and DeepSeek chosen per chat.
- **Perplexity** (Free plan + paid, $17/mo, checked 2026-11-13): Perplexity Pro centres on cited search answers and deep research with a model selector, plus 4,000 bonus Computer credits; Abacus focuses on app, video and slide generation. Switch if you mainly research the web and want every answer to carry sources. Stay with Abacus.AI if you want app building, slides, video and always-on bots in the same subscription.
- **Mistral AI (Le Chat)** (Free plan + paid, $14.99/mo, checked 2026-11-13): Mistral's Pro plan includes $25.5 a month in API credits and a coding CLI, IDE and web agent; Team adds 30 GB per user, domain verification and data export. Switch if you want a European vendor's assistant with API credits and a coding CLI included. Stay with Abacus.AI if you want access to GPT, Claude, Gemini and Grok models rather than one vendor's models.
- **Poe** (Free, Free plan; paid price not published): Poe offers models from OpenAI, Anthropic, Google, Meta, Mistral and Cohere plus community-made bots on iOS, Android, macOS, Windows and web; Abacus adds agents and app generation. Switch if you want to try many models and community bots in one chat app on every platform. Stay with Abacus.AI if you want a coding IDE, desktop listener and AI agent included with the model access.
- **LibreChat** (Open source, Free (self-hosted)): LibreChat connects Anthropic, AWS Bedrock, OpenAI, Azure OpenAI, Google and Vertex AI plus custom endpoints, with agents, MCP tools, OAuth2, LDAP and an admin panel for users and roles. Switch if a team needs one self-hosted chat UI with SSO and your own API keys for several providers. Stay with Abacus.AI if you want 20,000 monthly credits for models, video and image generation without handling API keys.
- **Open WebUI** (Open source, Free (self-hosted)): Open WebUI works with Ollama and OpenAI-compatible APIs, adds RAG across vector databases, role-based access, LDAP/SSO, voice and video calls, plus tool servers over MCP and OpenAPI. Switch if you want a self-hosted interface for local Ollama models and documents with groups and permissions. Stay with Abacus.AI if you do not want to run a server or meet the branding terms above 50 users.
- **LobeHub** (Open source, Free (self-hosted)): LobeHub combines an Agent Builder, agent groups with shared pages, scheduled runs, personal memory and a library of over 10,000 tools and MCP-compatible plugins. Switch if you want a polished multi-agent workspace and can accept its licence terms on derivative works. Stay with Abacus.AI if you want a managed service rather than your own deployment and agent configuration.
- **AnythingLLM** (Open source, Free (self-hosted)): AnythingLLM ships a desktop app and a Docker version, a built-in local engine for CPU or GPU, an agent builder, MCP support and LanceDB as the default vector database. Switch if you want a private desktop assistant that chats with your documents using local or API models. Stay with Abacus.AI if you need image and video generators and a hosted multi-model subscription with no setup.
- **Jan** (Open source, Free (self-hosted)): Jan runs open models from Hugging Face locally, connects to OpenAI, Anthropic, Mistral and Groq, and serves an OpenAI-compatible local API at localhost:1337 with MCP support. Switch if you want a free offline assistant on a laptop, with local models and your own cloud keys. Stay with Abacus.AI if you do not have the RAM for local models and want hosted frontier models in one plan.

## Open-source options in detail

- **LibreChat** (https://github.com/LibreChat-AI/LibreChat): Licence: MIT; Commercial use: Yes (MIT).; Runs on: Docker Compose on any server; you supply provider API keys or Ollama.; Setup: moderate: Docker Compose, .env file and your own provider API keys.; Last commit: 2026-11-13; GitHub stars: 46,600 (2026-11-13)
- **Open WebUI** (https://github.com/open-webui/open-webui): Licence: Open WebUI License (BSD-style with a branding clause) (not OSI-approved); Commercial use: Yes, but keep the branding unless you have 50 or fewer users.; Runs on: Docker or Python 3.12; optional NVIDIA CUDA image for local models.; Setup: moderate: One Docker command or pip install; Ollama optional for local models.; Last commit: 2026-08-25; GitHub stars: 157,500 (2026-11-13)
- **LobeHub** (https://github.com/lobehub/lobehub): Licence: LobeHub Community License (Apache-2.0-based) (not OSI-approved); Commercial use: Yes if unmodified; derivative works need a commercial licence from LobeHub.; Runs on: Docker, or a Vercel-style deploy with an OpenAI API key.; Setup: moderate: Run the setup script, then docker compose up -d.; Last commit: 2026-11-13; GitHub stars: 83,600 (2026-11-13)
- **AnythingLLM** (https://github.com/Mintplex-Labs/anything-llm): Licence: MIT; Commercial use: Yes (MIT).; Runs on: Desktop app for Mac, Windows, Linux; Docker for multi-user.; Setup: easy: Download the desktop app; Docker only for multi-user mode.; Last commit: 2026-10-23; GitHub stars: 67,500 (2026-11-13)
- **Jan** (https://github.com/janhq/jan): Licence: Apache-2.0; Commercial use: Yes (Apache-2.0).; Runs on: macOS 13.6+, Windows 10+, Linux; 8 GB RAM for 3B models.; Setup: easy: Install the desktop app and download a model.; Last commit: 2026-08-29; GitHub stars: 45,100 (2026-11-13)

## Questions

### What is the best alternative to Abacus.AI in 2027?
ChatGPT is the best overall Abacus.AI alternative on this page ($20/mo). For no cost, Claude has a free plan (Free: limited usage every 5 hours and every week). To self-host, LibreChat is open source (MIT).

### Is there a free version of Abacus.AI?
No. Abacus.AI has no free plan; paid plans start at $10/mo, checked on 13 Nov 2026.

### Is there a 100% free alternative to Abacus.AI?
Yes. LibreChat, Open WebUI, LobeHub, AnythingLLM, Jan are open source and free to self-host. ChatGPT, Claude, Gemini, Perplexity, Mistral AI (Le Chat), Poe have a free plan with limits, shown in the table.

### What is cheaper than Abacus.AI?
Gemini starts at $4.99/mo, against $10/mo for Abacus.AI, as listed on each vendor's pricing page on 13 Nov 2026.

### How much do Abacus.AI alternatives cost for a team of 5?
If each of 5 people buys the entry paid plan, at the prices Zekai checked on 13 Nov 2026, the monthly cost is Gemini $24.95/mo, Mistral AI (Le Chat) $74.95/mo, Claude $85/mo, against Abacus.AI $50/mo for Abacus.AI. Team and business plans can cost more per seat. The Zekai Cost Finder on this page recalculates for any team size.

### Which is better, ChatGPT or Abacus.AI?
ChatGPT is one vendor's model line with a free plan whose Instant mode has a 27K-token context window; Abacus ChatLLM bundles 100+ models from several vendors from $10 a month with no free plan. Choose ChatGPT if you want one vendor's assistant with a free tier and voice, image and research features in a single app. Stay with Abacus.AI if you want Claude, Gemini, DeepSeek and Grok models side by side for $10 a month instead of $20.

### Why are people leaving Abacus.AI?
The documented reasons are: ChatLLM Basic limits you to 3 AI Agent conversations a month and 20,000 credits; unrestricted Agent and Coding Agent use needs Pro at $20 a month with 30,000 credits (13 Nov 2026); The $7 first-month price is a discount: the page states the plan is $10 from the second month, and no free plan is listed (13 Nov 2026). Each is sourced in the section above.

### What are the best Abacus AI alternatives?
ChatGPT, Claude, Gemini and Perplexity are the main hosted choices. For one place to try many models, Poe is closest; for self-hosting, LibreChat, Open WebUI and Jan are common.

## Related on Zekai

- [ChatGPT alternatives](https://zekaiwork.com/alternatives/chatgpt/)
- [Claude alternatives](https://zekaiwork.com/alternatives/claude/)
- [Gemini alternatives](https://zekaiwork.com/alternatives/gemini/)
- [Perplexity alternatives](https://zekaiwork.com/alternatives/perplexity/)
- [Poe alternatives](https://zekaiwork.com/alternatives/poe/)
- [Open WebUI alternatives](https://zekaiwork.com/alternatives/open-webui/)
- [DeepSeek alternatives](https://zekaiwork.com/alternatives/deepseek/)
- [Genspark alternatives](https://zekaiwork.com/alternatives/genspark/)
- [Microsoft Copilot alternatives](https://zekaiwork.com/alternatives/microsoft-copilot/)
- [AI for Data Science & Advanced Predictive Analytics](https://zekaiwork.com/professions/ai-data-science-predictive-tools/)

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Live table, team cost finder and price alerts: https://zekaiwork.com/alternatives/abacus-ai/