WhichAI.todayGemini 4 Carbon
Pick this when you have everyday questions and want the deepest reasoning and highest-rated quality.
Skip it if you do not want an expensive Ultra subscription when cheaper models handle basic tasks.
LMArena Text overall 1526
Gemini 4 Carbon vs GPT-6.1 Sol
Updated Nov 13, 2026. Checked daily.
The short answer
Gemini 4 Carbon ranks ahead in every job we track where either appears (general & everyday).
Gemini 4 Carbon
1 of 1 job ahead
Paid plan
GPT-6.1 Sol
0 of 1 job ahead
Paid plan
Head to head, job by job
Each job ranks a #1, an alternative, and an open-weights pick from public leaderboards. Bars compare the two scores on that job's own signal.
Gemini 4 CarbonGPT-6.1 Sol
Which one should you pick?
GPT-6.1 Sol
OpenAI
Pick this when you prefer doing everyday work inside ChatGPT.
Skip it if you only use the normal chat box. Sol is in Work and Codex for now.
BenchLM near-frontier value; 1.05M token context.
Price, access, and privacy
Gemini 4 CarbonGPT-6.1 Sol
Cost
Google AI Ultra is $99.99/month. API is $2 per million input tokens and $10 per million output until Nov 30, 2026, then $4 and $20.
Needs Plus ($20/month) or higher. API is $2 per million input tokens and $10 per million output.
Free tier
Not on the free plan. Everyday Gemini on the free plan is a smaller Flash model.
Not on the free plan, and not in regular Chat yet. Plus includes it in Work and Codex.
Where to get it
Apps
- ChatGPT, Plus ($20/month)
- Perplexity, Pro ($20/month)
- GitHub Copilot, Copilot Pro ($10/month)
- Codex, Plus ($20/month)
Trains on chats
Yes for adults. Gemini Apps Activity is on by default, and those chats can be used to improve Google AI. Gemini Apps Activity, turn off Keep Activity. Safety review can still apply.
Yes on personal Free, Plus, and Pro. Improve the model for everyone is on by default. Settings, Data controls, turn off Improve the model for everyone.
Try both with the same prompt
Gemini 4 Carbon
Help me plan this. Ask one clarifying question, then give a short next step.
GPT-6.1 Sol
Turn this messy idea into a one-page plan with the first three tasks.
Want a sharper prompt? Build one for either model.
Ranking history
- Nov 12, 2026. Gemini 4 Carbon overtook Gemini 4 Argon. LMArena Text overall 1526
Questions
Is Gemini 4 Carbon or GPT-6.1 Sol better for general & everyday?
Gemini 4 Carbon ranks ahead for general & everyday on LMArena Text overall. Gemini 4 Carbon is the #1 pick (1526); GPT-6.1 Sol is the alternative pick.
Which is cheaper, Gemini 4 Carbon or GPT-6.1 Sol?
Gemini 4 Carbon: Google AI Ultra is $99.99/month. API is $2 per million input tokens and $10 per million output until Nov 30, 2026, then $4 and $20. GPT-6.1 Sol: Needs Plus ($20/month) or higher. API is $2 per million input tokens and $10 per million output.
Can I use Gemini 4 Carbon or GPT-6.1 Sol for free?
Gemini 4 Carbon: Not on the free plan. Everyday Gemini on the free plan is a smaller Flash model. GPT-6.1 Sol: Not on the free plan, and not in regular Chat yet. Plus includes it in Work and Codex.
Which is newer, Gemini 4 Carbon or GPT-6.1 Sol?
Gemini 4 Carbon was released on Oct 28, 2026, after GPT-6.1 Sol on Sep 29, 2026.
Which is more private, Gemini 4 Carbon or GPT-6.1 Sol?
Gemini 4 Carbon (Google): Yes for adults. Gemini Apps Activity is on by default, and those chats can be used to improve Google AI. GPT-6.1 Sol (OpenAI): Yes on personal Free, Plus, and Pro. Improve the model for everyone is on by default.