We compared the 9 leading artificial intelligences in the market - price, performance, strengths and weaknesses. Spoiler: there is no longer "the best AI". There is the best AI for what you need to do.
Less than four years ago, ChatGPT broke through and changed the world's relationship with technology. Since then, what looked like a two-horse race has become a crowded marathon: OpenAI, Anthropic, Google, Microsoft, xAI, DeepSeek, Meta, Mistral and Perplexity are all competing for your attention and your monthly subscription.
In 2026, choosing an AI is a bit like choosing a car: it depends on what you plan to do with it. Are you going to code? Write? Research? Automate office work? Each model shines on one terrain and stumbles on another.
This article is our updated map of the territory. We researched benchmarks, prices (with Brazilian context whenever possible), features and limitations of the main AIs available today. By the end, you should know exactly which one to bet on.
The quick picture of the market
Before diving into details, three facts need to be clear.
1. There is no longer one dominant model. In the April 2026 LMArena ranking, which measures blind human preference, Claude Opus 4.6 leads with 1,504 Elo points, Gemini 3.1 Pro comes second with 1,493 and GPT-5.4-high comes third with 1,482. The difference is statistically tight, and each one leads in different technical benchmarks.
2. Price has become a strategic differentiator. DeepSeek, from China, launched V4-Pro in April with Claude Opus-level performance at one seventh of the price. OpenAI moved in the opposite direction and doubled the GPT-5.5 API price. Anthropic kept list prices stable, but changed the tokenizer and effectively became more expensive. Each decision changes the calculation for companies and developers.
3. Brazil now has cheaper plans. ChatGPT Go arrived at R$ 39.99/month through a Nubank partnership. Google AI Plus came out at R$ 24.99/month. Microsoft 365 with Copilot costs around R$ 51/month in the personal version. For the first time, paid AI became accessible to the average Brazilian without the usual dollar-plus-IOF burden.
The 9 leading AIs at a glance
ChatGPT
- Company: OpenAI
- Current version: GPT-5.5
- Brazil price: R$ 39.99/month (Go) or R$ 99.99/month (Plus)
- Shines in: versatility, agents, mathematics
- Fails in: API became expensive
Claude
- Company: Anthropic
- Current version: Opus 4.7
- Brazil price: around R$ 116/month (Pro, charged in USD)
- Shines in: serious coding, long-running agents
- Fails in: no billing in Brazilian reais
Gemini
- Company: Google
- Current version: 3.1 Pro
- Brazil price: R$ 24.99/month (Plus) or R$ 96.99/month (Pro)
- Shines in: multimodal work, abstract reasoning
- Fails in: verbose answers and high latency
Copilot
- Company: Microsoft
- Current version: M365 Copilot, running GPT-5.5
- Brazil price: R$ 51/month (Personal) or R$ 103/user/month (Business)
- Shines in: Office and corporate integration
- Fails in: dependent on OpenAI
Grok
- Company: xAI
- Current version: 4.3
- Brazil price: R$ 150/month (SuperGrok) or R$ 228/month (X Premium+)
- Shines in: real time, X, agentic cost
- Fails in: behind the pure SOTA tier
DeepSeek
- Company: DeepSeek AI
- Current version: V4-Pro
- Brazil price: open source or API at roughly US$ 1.74/M tokens
- Shines in: cost, coding, self-hosting
- Fails in: LGPD risk in Brazil
Perplexity
- Company: Perplexity
- Current version: Sonar Pro / Max
- Brazil price: around R$ 108/month (Pro) or around R$ 1,050/month (Max)
- Shines in: research, citations, fact-checking
- Fails in: expensive, no local BRL pricing
Llama 4
- Company: Meta
- Current version: Maverick / Scout
- Brazil price: free as open source or through WhatsApp
- Shines in: long context with 10M tokens, multimodal
- Fails in: behind in coding
Mistral
- Company: Mistral AI
- Current version: Large 2026
- Brazil price: Le Chat free or low-cost API
- Shines in: Apache 2.0 licensing, Europe, code
- Fails in: weaker brand awareness
Now let's open each one in more depth.
ChatGPT (OpenAI): the all-rounder that doubled in price
Current version: GPT-5.5, codename "Spud", launched on April 23, 2026.
OpenAI remains the popular reference. When most people say "AI", they think of ChatGPT. And for good reason: GPT-5.5 is the sharpest Swiss army knife in the market. It scores 92.4% on MMLU, 88.7% on SWE-bench Verified and reduced hallucinations by around 60% compared with GPT-5.4.
The aggressive turn was API pricing: it rose to US$ 5/M input tokens and US$ 30/M output tokens - double GPT-5.4. OpenAI argues that the model produces about 40% fewer tokens in coding tasks, so the real cost increase would be closer to 20%. For light users, that matters. For heavy users, it hurts.
For Brazilians: ChatGPT Go at R$ 39.99/month is the best value among premium plans. Billing is in reais, without IOF, and there are up to 12 free months for Nubank Ultravioleta clients.
Shines in: agentic automation, hard math, Codex, multimedia through Sora 2 and GPT Image, advanced voice.
Fails in: API got expensive; it lost the serious coding crown to Claude, which wins on SWE-Bench Pro; it is still behind Gemini in abstract reasoning.
Use if: you want an AI that does almost everything reasonably well, with the most mature ecosystem in the market.
Claude (Anthropic): the favorite of serious developers
Current version: Claude Opus 4.7, launched on April 16, 2026.
Anthropic, founded by former OpenAI people and with Brazilian Instagram cofounder Mike Krieger as CPO, has become the brand for serious developers. Opus 4.7 scores 87.6% on SWE-bench Verified and leads SWE-Bench Pro by a comfortable margin. GitHub prioritized Opus 4.7 in Copilot on the same day it launched.
Other important numbers: 94.2% on GPQA Diamond, a 1M-token context window and the best market robustness against prompt injection attacks.
There is a pricing catch: Anthropic kept the table at US$ 5/M input and US$ 25/M output, but changed the tokenizer. The same text can now generate up to 35% more tokens. In practice, the bill went up.
Shines in: professional coding, long autonomous agents, long-document analysis, Constitutional AI.
Fails in: no BRL billing; some users report regressions in casual conversations.
Use if: you code for a living, work with long documents or need an AI that is less likely to bluff when it does not know.
Gemini (Google): the multimodal giant that finally delivered
Current version: Gemini 3.1 Pro Preview, launched on February 19, 2026.
Google took longer to enter the game properly, but in 2026 it delivered a competitive model. The most impressive leap was on ARC-AGI-2: from 31.1% on Gemini 3 Pro to 77.1% on 3.1 Pro, the largest generational jump seen in a frontier benchmark.
Other highlights include strong LiveCodeBench Pro results, 100% on AIME 2025 with code execution and leadership in long-running automation benchmarks.
The Brazilian advantage: Google is the only frontier provider charging directly in reais, without exchange-rate pain. Plus is R$ 24.99/month, Pro is R$ 96.99/month and Ultra is R$ 1,209.90/month. Students with .edu email get 12 months free of Pro.
Shines in: multimodal analysis, abstract reasoning, integration with Workspace, Pixel and Android, image generation and video generation.
Fails in: high time to first token, still behind Claude in serious coding and a preview model without guaranteed SLA.
Use if: you want the best multimodal model in the market, pay in reais and already live in the Google ecosystem.
Copilot (Microsoft): AI that lives inside Office
Current version: Microsoft 365 Copilot running GPT-5.5 since April 2026.
Microsoft does not train its own flagship model; it uses GPT-5.5 underneath. Copilot wins through integration: it lives inside Word, Excel, PowerPoint, Outlook, Teams and Loop. Work IQ connects corporate data such as email, calendar, SharePoint and OneDrive to the model.
In Brazil, pricing was repositioned aggressively: Microsoft 365 Personal at R$ 51/month with Copilot included, R$ 60/month for Family and around R$ 103/user/month for Copilot Business until June 30, 2026.
Shines in: corporate productivity, organizations already on Microsoft 365, automation via Copilot Studio and GitHub Copilot.
Fails in: depends on M365 licensing; corporate UI can be confusing; prices rise in July 2026.
Use if: your company lives in Outlook, Teams and SharePoint. In that case, Copilot is hard to beat.
Grok (xAI): the cheap and controversial challenger
Current version: Grok 4.3, launched on April 30, 2026.
Elon Musk's xAI decided to compete on price and niche. Grok 4.3 charges US$ 1.25/M input and US$ 2.50/M output, among the cheapest in the frontier tier, while delivering strong results in customer service and real-time social contexts.
Its main weapon is native integration with X: trend research, conversation monitoring and post analysis. For creators and social media analysts, that changes the workflow.
The catch: X Premium+ became much more expensive in Brazil, while SuperGrok costs around R$ 150/month.
Shines in: customer service, social media deep research, permissive image generation, voice cloning and real time.
Fails in: still below the OpenAI/Anthropic tier in pure SOTA performance; independent benchmarks are uneven; the product carries political controversy.
Use if: you work with X, social media or want strong price/performance for agents.
DeepSeek (China): the disruptor that scared the Valley
Current version: DeepSeek V4-Pro, with 1.6T parameters through MoE, launched on April 24, 2026.
DeepSeek is the most discussed story of the year. The Chinese startup launched an open-source model under the MIT license that delivers near-Claude coding performance for a fraction of the price.
For developers and companies with high volume, that rewrites the game. For organizations wanting self-hosting and full privacy, it became a standard option.
But there is a serious problem in Brazil. Privacy and cross-border data transfer questions remain relevant, and Brazilian legal experts have warned about potential misalignment with LGPD requirements. A January 2025 leak also exposed user chat histories.
Shines in: coding at scale, cost, self-hosting, enterprise fine-tuning, research.
Fails in: privacy concerns, geopolitical controversy and gaps in some reasoning tasks.
Use if: you prioritize cost, self-host or fine-tune. Avoid if: you handle sensitive data in Brazil.
Perplexity: the Google that cites its sources
Current version: Sonar, Sonar Pro, Sonar Reasoning Pro and Sonar Deep Research.
Perplexity is not trying to win pure reasoning. It wants to be the Google of the AI era: real-time research with visible citations. By 2026 it reached hundreds of millions in annual recurring revenue, a valuation around US$ 20 billion and tens of millions of monthly active users.
The key is anti-hallucination by design: each claim comes with a clickable source. For journalists, researchers and analysts, that is a workflow.
Shines in: research, fact-checking, journalism, due diligence and up-to-date factual context.
Fails in: no local pricing, expensive for Brazilians, modest reasoning benchmarks and not a replacement for ChatGPT or Claude in long creative tasks.
Use if: your work depends on reliable sources and you need to trace where each piece of information came from.
Llama (Meta): the open-source giant with caveats
Current version: Llama 4 Scout and Maverick.
Meta remains the biggest force in open-source AI, but the strategy became more ambiguous in 2026 as the company also launched closed proprietary models.
Llama 4 Scout has the largest context in the market: 10 million tokens. For summarizing multiple books or processing entire codebases, it is unmatched.
In Brazil, Llama powers Meta AI on WhatsApp and Instagram, in Portuguese, for free.
Shines in: record long context, multimodality, WhatsApp/Instagram integration and enterprise self-hosting.
Fails in: a clear gap in coding versus DeepSeek and Qwen; limitations in some regions; uncertainty about the future of open Llama after new proprietary launches.
Use if: you need massive context, vertical fine-tuning or self-hosted deployment.
Mistral (France): the European alternative for data sovereignty
Current version: Mistral Large 2026 plus a specialized stack including Codestral, Devstral, Magistral and Voxtral.
The Paris startup founded by former DeepMind and Meta people bet on Apache 2.0 licensing - commercially unrestricted and without the fine print associated with some alternatives. For European companies worried about GDPR, it became an obvious choice.
Mistral Large 2026 benchmarks are respectable, and support for Latin languages, including Portuguese, is excellent.
Shines in: data sovereignty, GDPR/LGPD compliance, efficient code, European multilingual use and edge deployment.
Fails in: lower brand awareness outside Europe, smaller ecosystem and reasoning benchmarks behind the US/China frontier tier.
Use if: you operate in Europe, need unrestricted commercial licensing or care about energy efficiency.
The verdict: which AI to use for each thing
After all the benchmarks and features, the practical question is: which one should I use for what?
For professional coding: Claude Opus 4.7 Pro. Backup: GPT-5.5 or DeepSeek V4.
For high-volume, low-cost coding: DeepSeek V4-Pro via API. Backup: Qwen 3.6.
For research and citations: Perplexity Pro. Backup: ChatGPT with browsing.
For working inside Office/Microsoft: Microsoft 365 Copilot. Backup: Gemini integrated with Workspace.
For hard math: GPT-5.5 Thinking. Backup: Gemini Deep Think.
For multimodal analysis with video, audio and text: Gemini 3.1 Pro. Backup: GPT-5.5.
For long context, full books and large codebases: Llama 4 Scout with 10M tokens. Backup: Claude or Gemini with 1M.
For monitoring X and real time: Grok 4.3. Backup: Perplexity.
For self-hosting and privacy: Mistral or Llama 4. Backup: DeepSeek V4, with caution.
For long autonomous agents: Claude Opus 4.7. Backup: Gemini 3.1 Pro.
Recommendation by budget profile
Student (R$ 0): Google AI Pro free for 12 months through a .edu email, or Perplexity Education at US$ 10/month.
Individual professional (up to R$ 100/month): ChatGPT Plus at R$ 99.99 or Go at R$ 39.99. Billing in reais, no IOF.
Serious developer (R$ 200-300/month): Claude Pro as the main tool plus DeepSeek V4 API for volume.
Researcher / journalist (R$ 100-150/month): Perplexity Pro plus Gemini Plus for multimodal analysis.
Small Brazilian company (from R$ 103/user/month): Microsoft 365 Copilot Business. Billing in reais, LGPD-friendly and natively integrated into the work routine.
Enterprise company (above R$ 500/user/month): Claude Enterprise or OpenAI Enterprise for sensitive data. Avoid DeepSeek until the ANPD takes a clearer position.
The strategy that costs 70% less: multi-model
Here is the secret of the smartest technical teams in 2026: do not use only one model. Build a system that routes automatically:
- 70% of tasks, simple: Haiku 4.5 or Gemini Flash-Lite - almost free
- 25% of tasks, medium: Sonnet 4.6 or Gemini 3.1 Pro - medium price
- 5% of tasks, hard: Opus 4.7 or GPT-5.5 Pro - expensive but unavoidable
This composition cuts costs by 60-70% without losing quality where it matters.
How the game changes in the next months
Things to watch:
- DeepSeek V4-Flash: if it reaches parity with Sonnet 4.6 in real workloads, AI costs may drop another 5-10x
- The ANPD position: if Brazil follows Italy and Australia in restricting DeepSeek, the corporate calculation changes
- Claude Mythos: still in preview with Project Glasswing partners, it may be Anthropic's next jump
- Llama 5 vs. Muse Spark: if Meta moves away from open source, DeepSeek and Mistral will try to fill the gap
- Price increases: Microsoft 365 rises in July 2026. ChatGPT API already doubled. Anthropic may follow
Conclusion: the era of conscious choice
The question "what is the best AI?" has become "what is the best AI for this?". That is good news: it means the market matured, prices fell in some cases, and Brazilians finally have accessible options.
The practical rule for 2026: test two or three before deciding. Almost all have a free tier or trial. Use them for a week, feel the texture and see which one matches the way you think. The best AI is the one you actually use.
And keep your radar on: this text reflects the state of the market in May 2026. In three months, half of these numbers may have changed. That is life on the technology frontier.
This article was updated in May 2026. We plan to revisit the ranking every quarter - follow Entercast so you do not miss it.