In-depth reviews of AI tools and productivity software. We examine features, pricing, real-world performance, and limitations based on publicly available data and documentation.
Copilot now comes bundled with Microsoft 365 from $9.99 a month and lets you pick OpenAI or Anthropic models. The free app shows ads, and Microsoft publishes no usage limits.
The DeepSeek app is free and its newest model is open-weight. Chats go to servers in China, and on one independent test the model almost never admitted not knowing an answer.
SpaceXAI’s Grok 4.7 posted a 29% hallucination rate on Artificial Analysis’s test. The standard plan costs a reported $30 a month, training is on by default, and January 2026 brought blocks in two countries.
Every answer on Perplexity carries citations, and the ads ended in February 2026. Its Sonar models, tied for first on Arena’s Search board in 2025, placed 29th and 31st of 34 in August 2026.
Google’s Gemini starts at $4.99 a month and bundles storage with every paid plan. The trade is privacy: Workspace features need Keep Activity on, and human reviewers read some chats.
Anthropic’s Claude ranks near the top of Arena’s text board and the Artificial Analysis index, and it carries no ads. Every plan has caps Anthropic does not count, and Fable costs extra on Pro.
OpenAI’s ChatGPT Plus still costs $20 a month, while the models behind it changed through September 2026. Free and Go carry ads, training is on by default, and two independent boards put rival models first.
