Short answer: use ChatGPT when one model's answer is enough, and use Synero when the answer is hard to verify or the decision matters. ChatGPT replies with one model. Synero asks up to four top models (GPT, Claude, Gemini, Grok) the same question at once, then gives you a consensus answer plus an Agreement panel that shows where they agree and where they split.
Start free: 3 questions with no card.
What is the difference between Synero and ChatGPT?
ChatGPT answers with one model per reply. The answer is fluent and confident, and it reads the same whether the model is right or guessing. There is nothing in the output that tells you which one you got.
Synero is a chat that asks several models at once. You pick one to four models (one per provider) with chips in the composer, or click a preset: Solo (1 model), Duel (2 side by side), Council (up to 4, balanced for speed), or Deep (up to 4 flagship models). With one model it is a normal chat. With two or more you get:
- A consensus answer that merges the models' replies.
- An agreement score from 0 to 100.
- What the models agree on, which is where you can be more confident.
- Where they split, with each model's stance and which side is better supported, which is where to check before you act.
- Every original answer, one tab away.
Synero runs 20 models from four providers (OpenAI, Anthropic, Google, xAI), including GPT-6.1 Sol, Claude Opus 5.5, Gemini 3.1 Pro, and Grok 4.7. That means Synero includes OpenAI's models and adds three more labs to check them against.
How Synero works
1Ask your question
Your question goes to GPT, Claude, Gemini and Grok. Each answers on its own.
2Get one answer
Synero writes one combined answer from the best of all four.
3See where they split
Agreement is a good sign. Disagreement tells you what to check.
Synero vs ChatGPT: feature comparison
Models per question
- Synero
- 1 to 4, one per provider
- ChatGPT
- One model per reply
Where models disagree
- Synero
- Shown in an Agreement panel
- ChatGPT
- Not applicable, there is no second opinion
Providers
- Synero
- OpenAI, Anthropic, Google, xAI
- ChatGPT
- OpenAI
Chat features
- Synero
- Follow-ups, regenerate, edit last message, stop, copy chat, files and images, private mode, history, share links
- ChatGPT
- Mature chat apps with voice, image generation, and a large ecosystem of add-ons
Developer access
- Synero
- API and MCP server for agents and IDEs
- ChatGPT
- Broad API and SDK ecosystem
Price
- Synero
- Free demo, 3 free queries, then $10 a month with $10 of usage included
- ChatGPT
- Check OpenAI's current plans
| Synero | ChatGPT | |
|---|---|---|
| Models per question | 1 to 4, one per provider | One model per reply |
| Where models disagree | Shown in an Agreement panel | Not applicable, there is no second opinion |
| Providers | OpenAI, Anthropic, Google, xAI | OpenAI |
| Chat features | Follow-ups, regenerate, edit last message, stop, copy chat, files and images, private mode, history, share links | Mature chat apps with voice, image generation, and a large ecosystem of add-ons |
| Developer access | API and MCP server for agents and IDEs | Broad API and SDK ecosystem |
| Price | Free demo, 3 free queries, then $10 a month with $10 of usage included | Check OpenAI's current plans |
When should I use ChatGPT instead?
Be honest about the job. ChatGPT is the better pick when:
- You live inside its ecosystem: voice, native image generation, custom GPTs, and the apps built around it.
- You are building on a mature SDK across many languages.
- The task is cheap and reversible: drafting an email, reformatting a doc, a quick lookup. Asking four models is overkill when a wrong answer costs a minute of editing.
See it in 30 seconds
When is Synero the better choice?
Reach for Synero when a confident but wrong answer is expensive: a strategy call, a research claim you cannot easily fact-check, a technical trade-off, a medical or legal question you will bring to a professional. Models from different labs fail in different ways, so when they agree you can lean on the answer, and when they split you know exactly which part to verify. A single model cannot show you that.
Example question: "Should we price our B2B tool per seat or per usage?" One model gives you one confident recommendation. Four models might agree on the trade-offs and split on which fits a small team, and that split is the useful part.
FAQ
Does Synero just use ChatGPT's models?
It includes OpenAI's models and adds Anthropic, Google, and xAI. You can run one model like a normal chat, or up to four at once for a consensus answer and an agreement report.
Is this just a model picker like other multi-model apps?
No. A picker hands you one answer to judge yourself. With two or more models Synero reads their answers together and tells you where they agree, where they split, and which side is better supported.
Is Synero free to try?
Yes. A free account gets 3 questions with no card. After that it is $10 a month with $10 of usage included across all 20 models, or pay as you go with credit packs from $5, no subscription. See pricing.
Can I use ChatGPT and Synero together?
Yes. Many people keep ChatGPT for everyday work and use Synero for the questions where they want a second opinion.
Where can I learn more?
See how Synero works, the comparisons with Claude, Gemini, and Perplexity, or the best ChatGPT alternatives.
Try Synero free. Free to try, no card, private by default, and not used for training.
Ask ChatGPT, Claude, Gemini and Grok at the same time
Get one combined answer and see exactly where the AIs agree and where they split. Free to try, no card, private by default, and not used for training. Then $10 a month with $10 of usage included, or pay as you go with credit packs from $5, no subscription.