Sonar Reasoning Pro
For decisions you have to explain. It searches the live web, shows its working, and cites every source behind the conclusion.
[ Overview ]
Meet Sonar Reasoning Pro.
Sonar Reasoning Pro pairs live web search with reasoning you can actually read. It is the model for the moment a client or a boss asks how you reached that conclusion, and you need more than a confident paragraph.
Use it to compare three tools across live pricing pages and explain the recommendation. Work out what a run of recent platform announcements means for a client's strategy. Decide which of two channels to bet the quarter on, with the reasoning laid out and the sources attached. You get the answer and the trail that led to it.
The reasoning pass costs time, so it is overkill on a simple lookup where Sonar Pro answers faster. Reach for it when a question has several moving parts and current facts underneath. When you want a full sourced report instead of an answer, use Sonar Deep Research. All are included with HiggsChat on one subscription.
[ Key features ]
What it's great at.
Thinks it through
Works through the brief before it answers, so you edit less.
Writes in your voice
Scripts, captions, emails and blog drafts that sound like you.
Keeps the thread
Hand the same conversation to any other model without repeating yourself.
Turns words into visuals
Take the script you just wrote straight into an image or a video.
Handles the long stuff
Paste in a full transcript or brief and it stays in view.
Always current
The newest version is wired up the day it ships. No upgrade to buy.
[ Use cases ]
Built for real work.
Content & copy
Posts, emails and scripts in your brand voice.
Software
Scaffold features, write tests, review PRs.
Data & analysis
Explain datasets, write formulas and SQL.
Learning
Break down hard concepts with clear answers.
Research
Summarize long PDFs into clear takeaways.
Support
Draft replies, macros and help articles.
[ Example prompts ]
Steal these to get started.
Copy any prompt and paste it straight into Sonar Reasoning Pro inside HiggsChat.
“Rewrite this to be 30% shorter, keep the key facts, confident but warm tone: [paste text]”
“Here is a function and the error it throws. Explain the root cause in two sentences, then give a corrected version: [paste code]”
“Act as a skeptical investor. List the three weakest assumptions in this pitch, with a sharper question for each: [paste]”
“Explain how vector embeddings work to a smart 12-year-old, one everyday analogy, no jargon.”
[ How to use it ]
Sonar Reasoning Pro inside HiggsChat.
Open a new chat
Hit New Chat in your HiggsChat sidebar. No API key or Anthropic account needed.
Select Claude Opus 4.8
Pick Claude Opus 4.8 from the model selector at the top. Switch any time.
Prompt & switch
Start working, and hand the thread to any other model whenever you want a second take.
[ Pricing ]
One subscription. Every AI model.
Chat, image, and video models from OpenAI, Anthropic, Google, SpaceXAI, and more, all powered by simple credits. No free plan; free signup lets you explore everything first.
Team
Everything in Max, plus:
1 credit = a slice of real cost
You only pay for what a model actually costs, nothing more.
One shared balance
Chat, images and video all draw from the same credits.
Never get stuck
Run out? Buy add-on credit packs anytime.
[ FAQ ]
Sonar Reasoning Pro, answered.
Try Sonar Reasoning Pro, and 60 more.
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Sonar Reasoning Pro pairs live web search with reasoning you can actually read. It is the model for the moment a client or a boss asks how you reached that conclusion, and you need more than a confident paragraph.
Use it to compare three tools across live pricing pages and explain the recommendation. Work out what a run of recent platform announcements means for a client's strategy. Decide which of two channels to bet the quarter on, with the reasoning laid out and the sources attached. You get the answer and the trail that led to it.
The reasoning pass costs time, so it is overkill on a simple lookup where Sonar Pro answers faster. Reach for it when a question has several moving parts and current facts underneath. When you want a full sourced report instead of an answer, use Sonar Deep Research. All are included with HiggsChat on one subscription.
