Best Free AI Models in 2026: Which Ones Cost Nothing and Where to Use Them
ChatGPT Free now runs GPT-6 Luna, Claude Free runs Sonnet 5.5, and since 9 October free Gemini sends most prompts to Flash-Lite. Here is every AI model you can use…
Claude Opus vs Sonnet: Which One to Use, and When Opus Is Worth Twice the Price
Claude Opus 5.5 costs twice as much per token as Claude Sonnet 5.5, and on Anthropic's own benchmarks the two sit within a few points of each other. The real…
Best AI for Physics: Which Model Actually Solves It
The best AI for physics in October 2026 is a three-way tie at the top. Claude Opus 5.5, GPT-6 Astra and GPT-6.1 Sol all score 31.7% on CritPt, the research-level…
The Ultimate Claude Model Comparison: Claude 4 to Opus 5.5
Anthropic shipped 20 Claude models between May 2025 and October 2026. The newest flagship, Claude Opus 5.5, costs $4 / $20 per million tokens, less than a third of…
Best Chinese AI Models in 2026: MiMo, Qwen, GLM, Kimi and DeepSeek Ranked
The best Chinese AI model in October 2026 is not DeepSeek. Xiaomi’s MiMo-V2.6-Pro scores 46.3 on the Artificial Analysis Intelligence Index v4.3.2, the highest of…
Proton Lumo AI Review: Is the Private AI Worth Using?
Proton Lumo is the AI assistant built so that even the company running it cannot read your chats. It comes from Proton, the Swiss maker of Proton Mail and Proton…
Claude Haiku 5.5: Free in Claude, 75% Cheaper, and When to Pick It Over Sonnet
Anthropic released Claude Haiku 5.5 on October 7, 2026. Every Claude plan can pick it on Claude.ai, including Free, it costs about 75% less to run than Haiku 4.5…
Mistral Large 4 (Le Chonk): Specs, Benchmarks, Price and When the Weights Land
Mistral Large 4, nicknamed Le Chonk, is a 1-trillion-parameter mixture-of-experts model with 49 billion active parameters. Mistral released it as a public preview…
Grok Incognito Mode: How to Use Private Chat and Delete Your History
Grok's incognito mode is called Private Chat. You turn it on with the ghost icon in the top right corner. A private chat never appears in your history, is never…
The Ultimate ChatGPT Model Comparison: GPT-5.0 to GPT-6.1
OpenAI now sells four GPT-6 models, Astra since September 3, 2026, GPT-6 Sol and GPT-6 Luna since September 22 and GPT-6.1 Sol since September 29, and none of them…
The Ultimate Gemini Model Comparison: 2.5 to Gemini 4 Argon
Google now runs two Gemini timelines that no longer move together. The Flash line has raced all the way to Gemini 3.8 Flash, launched September 2, 2026, while the…
What Is Claude AI? Who Makes It and What It's Good For (2026)
Claude AI is an AI assistant and a family of large language models made by Anthropic, a San Francisco AI company. You use it on Claude.ai, in the Claude apps or…
Gemini 4 Argon Is Out: Benchmarks, Price, and Who Can Use It
Google announced Gemini 4 Argon on September 30, 2026, its first flagship model since Gemini 3.1 Pro. It leads several benchmarks at an introductory $2 and $10 per…
Claude Sonnet 5.5 Is Here: Price, Benchmarks, and the Effort Setting That Decides Your Bill
Anthropic released Claude Sonnet 5.5 on September 28, 2026 at the same $2 and $10 per million tokens as Sonnet 5. It nearly matches Opus 5.5 on several benchmarks…
BottleCap AI: The Prague Lab Teaching Qwen to Think Less, Now on Your Mac
BottleCap AI, the Prague startup co-founded by word2vec author Tomáš Mikolov, has released a Mac-native build of its newest model. On 24 September 2026 it published…
Xiaomi MiMo Explained: What V2.6 Is, What It Costs, and How to Use It
Xiaomi MiMo is Xiaomi’s family of open-weight AI models, and on 21 September 2026 it took the top spot among open models. The flagship, MiMo-V2.6-Pro, is a…
Grok vs Claude: Which AI Is Actually Better in 2026?
Grok 4.7 and Claude Opus 5.5 both shipped in the same week, and the gap between them widened. Grok is still cheaper per token, but on the tasks independent testers…
Claude Opus 5.5 Is Here: Price, Benchmarks, and Who Actually Gets It
Anthropic released Claude Opus 5.5 on September 22, 2026, the first model in a new Claude 5.5 family. It does the work of Fable 5.1 at 40% less cost than Opus 5…
Grok 4.7: What Changed, What It Costs and Whether to Upgrade
SpaceXAI released Grok 4.7 on 21 September 2026 at exactly the price Grok 4.6 cost, $2 per million input tokens and $6 per million output tokens. The token price…
Perplexity vs Gemini: Which One Actually Deserves Your $20?
Perplexity vs Gemini is not the fight the comparison pages describe. Perplexity already runs a Gemini model on its paid plans, so the question is not which one is…
Jev and System One Models: The AI That Answers in Numbers, Not Words
A new AI lab says its model is 444 times cheaper than an LLM and cannot hallucinate. Its own documentation and two independent tests tell a more useful story about…
What Are AI Tokens? The Unit Every AI Bill Is Counted In
Every AI price you have ever seen is quoted per million tokens, and almost nobody explains what a token actually is. It is not a word, it is not a message, and it…
Why AI Gives You a Different Answer Every Time
Ask an AI the same question twice and you often get two different answers. Researchers at Thinking Machines Lab ran the same prompt 1,000 times with randomness…
Perplexity vs ChatGPT: What Actually Separates Them
Almost every Perplexity vs ChatGPT comparison treats them as rival brains. They are not. On a paid Perplexity plan you can be talking to OpenAI, because Perplexity…
AI Benchmarks Explained: What MMLU, GPQA, SWE-bench and LMArena Actually Measure
Every AI launch arrives with a wall of numbers. The benchmarks behind them are narrower, older and more fragile than the charts suggest, and the same test can hand…
Claude vs Perplexity: Which AI Should You Actually Pay For?
Most Claude vs Perplexity comparisons get two things wrong. Perplexity can already run Claude on a paid plan, and Claude has searched the web on every plan since…
Grok vs Gemini: Which AI Is Actually Better in 2026?
The short answer is that Gemini is still the better default for most people, and Grok is the better specialist, but the model gap has moved since September. xAI…
GPT-6 Astra Is Here: Benchmarks, Price, and What the Numbers Don't Say
OpenAI launched GPT-6 Astra on September 3, 2026, calling it state of the art on computer use, software engineering and science, and the first model it has ever…
Gemini 3.8 Flash: Benchmarks, Pricing and What the Headlines Got Wrong
Google made Gemini 3.8 Flash generally available on September 2, 2026, three weeks after 3.7 Flash. It wins 8 of the 14 rows in Google's own comparison table and…
Claude Fable 5.1 and Mythos 5.1: One Model, Two Sets of Safeguards
Anthropic released Claude Fable 5.1 and Claude Mythos 5.1 on September 1, 2026. They are the same model with two different safety layers, and the system card calls…
