FusionLLM AI puts GPT-5, Claude, Gemini, Grok, DeepSeek and 13 more behind a single login. Switch models mid-conversation without losing context. From $19/month.
Paying separately
With FusionLLM AI
Same models, one bill, one tab — no more subscription sprawl. Switch mid-conversation. Route automatically. Keep your context.
Start at $19/moEvery model below is included on every plan. Pick by name, or let Smart Routing pick for you.
GPT-5
General reasoning, writing, tools
o3
Deep multi-step reasoning
Claude Sonnet 4.5
Coding, analysis, long docs
Claude Opus 4.1
Top-tier reasoning & writing
Gemini 3 Pro
Long context, multimodal
Gemini 3 Flash
Fast, cheap, web-grounded
Grok 4
Real-time, candid answers
Grok Code
Fast code generation
DeepSeek V3
Open-weight value, code
DeepSeek R1
Open-weight reasoning
Llama 4 Maverick
Open flagship, long context
Llama 4 Scout
Massive context, fast
Mistral Large 2
European flagship, multilingual
Codestral 2
Code completion & autocomplete
Perplexity Sonar
Live web answers + citations
Perplexity Sonar Pro
Deeper research, more sources
Command R+
RAG, enterprise retrieval
Command R7
Tool use, agents
Subscription fatigue is real — you already pay for three of these. FusionLLM is the one tab you keep open.
Ask GPT-5, then hand the full thread to Claude Sonnet 4.5 for the refactor. Context carries over — no copy-paste, no lost thread.
One toggle. We route each prompt to the best model for the job — DeepSeek V3 for code, o3 for proofs, Sonar for live web, Gemini 3 Pro for long context.
Organize work by project or client. Each workspace keeps its own conversations, default model, and history.
Save, tag, and reuse your best prompts. Pin a preferred model per template and launch straight into chat.
Prefer usage-based billing? Drop in your own OpenRouter key and route through FusionLLM at cost.
See credits used vs. plan in real time, per model and per day. Top up in one click when you run low.
Three built-in assistants in the Assistant tab, included with your workspace.
Get instant answers on billing, plans, and usage — and a real human follow-up when it matters.
Not sure which model to use? Ask, and get a straight answer.
Turn a rough idea into a sharp, reusable prompt in seconds.
The first 150 seats lock founding pricing for as long as the subscription stays active. Pricing goes up after the countdown hits zero — and the 30-day delivery guarantee backs every founding seat.
Presale closes in
Presale ends October 4, 2026.
Seats
150 founding seats left at locked pricing.
30-day delivery guarantee
If FusionLLM AI isn't live and usable within 30 days of your founding seat, you get a full refund. Read the policy →
Save 17% vs monthly
2,000 credits
Save 17% vs monthly
6,000 credits
Save 17% vs monthly
24,000 credits · 5 seats
Founder · St. Petersburg, FL
"I founded FusionLLM because every AI power user was solving the same problem manually — switching between tabs, managing multiple bills, losing context between models. FusionLLM is the platform I use every single day. Every model on the list is one I actually needed. Every feature exists because I hit the wall without it first."

Before FusionLLM, my workday was a shuffle: a ChatGPT tab for drafting, a Claude tab for code, a Gemini tab for research — three subscriptions, three logins, and context lost every time I moved a question between them. I was paying more to work slower.
So I built the platform I wanted: one subscription, one workspace, one tab — every model a message away, with my context intact. That's the whole idea, and I use it every single day.