Anthropic is a US AI company founded by former members of OpenAI.
The models and services mentioned in this note are NOT a comprehensive list of the company’s product releases and offerings.
Anthropic Product & Services
Claude Code
Claude Code is an agentic
Claude 4
Anthropic released Claude 4 Opus and Sonnet in May 2025, claiming to be the best coding models on the market. As of 22nd May, Claude Opus 4 leads on SWE-bench (72.5%) and Terminal-bench (43.2%).
Notable features of Claude 4 include extended thinking (with a smaller model to summarise the thinking steps), parallel tool use, and memory improvement.
Together with the release of Claude 4 models, Anthropic added four new features to its API: code execution, an MCP connector, a Files API, and the ability to cache prompts for up to one hour.
Claude 3.5
Claude 3.5 Sommet
In June 2024, Anthropic announced an updated Claude Sonnet model, Claude Sonnet 3.5. As with all the upgrades, the new model is more intelligent, faster, and affordable than the previous versions.
Two notable features make Claude Sonnet 3.5 a strong contender in the fast-evolving LLM land.
The first is its superior vision ability. Claude 3 already performed the best when analysing charts, graphs, and slides, and now Claude 3.5 Sonnet claims to be even better.
Another power feature, artifacts, allows users to generate code, presentations, web design, and code and preview them in dedicated windows (environments) alongside the chat UI. This enables users to see, edit, and build upon the outputs of Claude models interactively, all in one place. The interaction allows for a seamless copilot experience when working with AI, removing the reliance on developing custom agents and tools for complex tasks.
Claude 3.5 Haiku
Anthropic released Claude 3.5 Haiku on 22nd October 2024, an updated version of its predecessor, Claude 3. With its affordable pricing and solid performance, Claude 3.5 Haiku is an excellent choice for many at-scale use cases.
Claude 3
Claude 3 is a family of LLMs comprising three multimode models (language and vision): Opus, Sonnet, and Haiku, ranging from the most powerful to the least expensive.
Upon release, Claude 3 models quickly topped many benchmarking leaderboards in language processing, maths, reasoning, common knowledge, and code generation, entering the league of top-performing Gen AI models and making it a formidable opponent to GPT-4 and Gemini Pro 1.0.
A few features that stand Claude 3 out:
- Opus can handle up to 1 million tokens (upon request)
- Sonnet and Haiku achieved top marks in AI2D and chart-based Q&A
- Widely touted [@armstrongClaudeMostHuman2024] to have the most human-like responses and is above Gemini Pro on the LMSYS Chatbot Arena Leaderboard
- Opus achieved the top mark in the “needle-in-the-haystack” test
- Its excellent next token prediction resulted in itself declaring self-aware
Claud 3 is available as API with tools support on Claude API, Amazon Bedrock and a private preview on Google Cloud. Anthropic also provides a ChatGPT-like chatbot named Claude Pro powered by Sonnet, which costs the same as ChatGPT’s $20/month to use the top-tier Opus model.
References
- Armstrong, E. (2024) Claude 3 Is The Most Human AI Yet. https://every.to/napkin-math/claude-3-is-the-most-human-ai-yet.