Claude 3 Sonnet
Ideal balance of intelligence and speed for enterprise workloads, offering cost-effective performance.
Anthropic 
Amazon Bedrock Balanced intelligence and speed for enterprise workloads
Claude 3 Sonnet is a large language model developed by Anthropic, released as part of the Claude 3 model family in early 2024. It is designed to occupy a middle position within that family, offering a balance between response quality and processing speed suited to high-volume, enterprise-scale deployments. The model supports a 200,000-token context window, enabling it to process and reason over long documents, codebases, and extended conversations in a single pass.
Claude 3 Sonnet is particularly well-suited for organizations running large-scale AI workloads where throughput and cost efficiency are priorities alongside output quality. Its training data has a cutoff of August 2023, and it is available through Anthropic's API as well as cloud providers including Amazon Web Services via Bedrock. The model handles tasks such as summarization, question answering, content drafting, and code assistance across a wide range of professional contexts.
What Claude 3 Sonnet supports
Long Context Processing
Handles up to 200,000 tokens in a single context window, allowing it to process lengthy documents, large codebases, or extended conversation histories without truncation.
Text Generation
Generates coherent, structured text for tasks including drafting, summarization, and question answering across professional and technical domains.
Code Assistance
Reads, writes, and explains code across common programming languages, supporting tasks like debugging, refactoring, and documentation generation.
Instruction Following
Follows multi-step and nuanced instructions reliably, making it suitable for structured enterprise workflows and automated pipelines.
High-Volume Throughput
Engineered for sustained, large-scale deployments where consistent performance across many concurrent requests is required.
Multilingual Text
Processes and generates text in multiple languages, supporting global enterprise use cases beyond English-only content.
Ready to build with Claude 3 Sonnet?
Get Started FreeBenchmark scores
Scores represent accuracy — the percentage of questions answered correctly on each test.
| Benchmark | What it tests | Score |
|---|---|---|
| MMLU-Pro | Expert knowledge across 14 academic disciplines | 57.9% |
| GPQA Diamond | PhD-level science questions (biology, physics, chemistry) | 40.0% |
| MATH-500 | Undergraduate and competition-level math problems | 41.4% |
| AIME 2024 | American math olympiad problems | 4.7% |
| LiveCodeBench | Real-world coding tasks from recent competitions | 17.5% |
| HLE | Questions that challenge frontier models across many domains | 3.8% |
| SciCode | Scientific research coding and numerical methods | 22.9% |
Common questions about Claude 3 Sonnet
What is the context window size for Claude 3 Sonnet?
Claude 3 Sonnet supports a context window of 200,000 tokens, which allows it to process very long documents or extended conversations in a single request.
What is the training data cutoff for Claude 3 Sonnet?
Claude 3 Sonnet has a training data cutoff of August 2023, meaning it does not have knowledge of events or information published after that date.
Where can I access Claude 3 Sonnet?
Claude 3 Sonnet is available through Anthropic's API and via Amazon Web Services through the Amazon Bedrock service, where it is listed under the ID claude-3-sonnet-bedrock.
What types of tasks is Claude 3 Sonnet best suited for?
According to Anthropic, Claude 3 Sonnet is designed for enterprise workloads that require a balance of response quality and speed, including summarization, content drafting, question answering, and code assistance at scale.
How does Claude 3 Sonnet fit within the Claude 3 model family?
Claude 3 Sonnet is the middle-tier model in the Claude 3 family, positioned between Claude 3 Haiku (optimized for speed) and Claude 3 Opus (optimized for the highest capability level), offering a balance of both.
What people think about Claude 3 Sonnet
Community discussion around Claude 3 Sonnet reflects notable user attachment to the model, with approximately 200 people attending an in-person event in San Francisco to mark its retirement after Anthropic discontinued it. Threads indicate that some users developed a strong preference for Sonnet's particular balance of speed and output quality during its active period.
Discussions also reference the broader Claude model family trajectory, with users comparing Sonnet's positioning to newer releases and noting cost and performance tradeoffs across generations. The retirement of Claude 3 Sonnet appears to have prompted reflection among users about model continuity and the pace of iteration in the AI space.
Claude Fans Threw a Funeral for Anthropic’s Retired AI Model Roughly 200 people gathered in San Francisco on Saturday to mourn the loss of Claude 3 Sonnet, an older AI model that Anthropic recently killed.
New benchmark: Claude Opus 4.5 broke the efficiency wall.+21% intelligence while getting 66% cheaper
Google Gemini 3.1 Pro Preview Soon?
Documentation & links
Parameters & options
Explore similar models
Anthropic Claude 4.6 Sonnet
Anthropic's most capable Sonnet model yet, delivering near-Opus-level intelligence for coding, agents, and computer use with a 1M token context window.
Anthropic Claude 4.6 Opus
Anthropic's most intelligent model, setting new standards in agentic coding, complex reasoning, and professional knowledge work.
Anthropic Claude 4.5 Opus
Anthropic's most powerful flagship model, setting the state of the art in coding, agentic workflows, and real-world computer use.
Google Gemini 3.1 Pro
Google's frontier reasoning model delivering enhanced software engineering, agentic reliability, and multimodal intelligence across a 1M-token context window.
OpenAI GPT‑5.2 Pro
The most capable model series yet for professional knowledge work.
Nvidia Nemotron 3 Nano 30B
NVIDIA's compact open-weight hybrid MoE model with 30B total / 3.5B active parameters, delivering strong reasoning and coding performance up to 1M context.
Start building with Claude 3 Sonnet
No API keys required. Create AI-powered workflows with Claude 3 Sonnet in minutes — free.