Model Tracker
Claude 3 Sonnet
Claude 3 Sonnet is an AI model made by Anthropic. Anthropic released it on 4 March 2024. Anthropic retired it on 21 July 2025.
In inglese
Claude 3 Sonnet is an AI model made by Anthropic. Anthropic released it on 4 March 2024. Anthropic retired it on 21 July 2025. Its context window is 200,000 tokens. Through the API it costs $3.00 per 1M tokens for input and $15.00 per 1M tokens for output. Its knowledge cutoff is August 2023.
- Released
- 4 March 2024 — www.anthropic.com, read 16 October 2026
- Status
- Not confirmed: two readings disagree: retired and ga
- Takes
- Text, Image — assets.anthropic.com, read 16 October 2026
- Returns
- Not confirmed: two readings disagree: text, code and text
- Open weights
- Not confirmed: The maker's pages reviewed do not state whether Claude 3 Sonnet's weights are open or downloadable.
- Licence
- Not confirmed: The maker's pages reviewed do not name a licence for Claude 3 Sonnet's weights.
- Context window
- 200,000 tokens — www.anthropic.com, read 16 October 2026
- Longest answer
- Not confirmed: The maker's pages reviewed do not print a standard maximum output-token limit for Claude 3 Sonnet.
- Knowledge cutoff
- August 2023 — assets.anthropic.com, read 16 October 2026
- API price, input
- $3.00 per 1M tokens — www-cdn.anthropic.com, read 16 October 2026
- API price, output
- $15.00 per 1M tokens — www-cdn.anthropic.com, read 16 October 2026
- Where
- API, Consumer app, Cloud marketplaces — www.anthropic.com, read 16 October 2026
- Parameters
- Not confirmed: The maker's pages reviewed do not publish a parameter count for Claude 3 Sonnet.
- Model card
- https://assets.anthropic.com/m/61e7d27f8c8f5919/original/Claude-3-Model-Card.pdf — assets.anthropic.com, read 16 October 2026
Benchmarks
Measured by others, not by the maker: each score with the name the measurer gives the model and the setting it ran, its day and its licence.
Arena
- Text Arena, claude-3-sonnet-20240229: 1,281 (1,277–1,285, 109,284 votes), published 15 October 2026
- Vision Arena, claude-3-sonnet-20240229: 1,016 (1,005–1,027, 12,314 votes), published 9 October 2026
Arena’s leaderboard dataset (lmarena-ai/leaderboard-dataset on Hugging Face), CC BY 4.0: ratings from people’s votes between two anonymous models, as Arena publishes them. Data · CC BY 4.0
Epoch AI
- Epoch Capabilities Index, Claude 3 Sonnet: 120.7 (112.5–123.9), as of 19 October 2026
- GPQA Diamond, claude-3-sonnet-20240229: 40.6% (± 2.4), run 27 January 2025
- OTIS Mock AIME 2024–2025, claude-3-sonnet-20240229: 2.5% (± 2.0), run 25 February 2025
Epoch AI, ‘Capabilities & benchmarking’, epoch.ai/benchmarks, CC BY 4.0: Epoch AI’s own runs and its Capabilities Index. Data · CC BY 4.0
Questions
When was Claude 3 Sonnet released?
Anthropic released Claude 3 Sonnet on 4 March 2024.
What is the context window of Claude 3 Sonnet?
The context window of Claude 3 Sonnet is 200,000 tokens, as Anthropic prints it.
How much does the Claude 3 Sonnet API cost?
On the standard tier, Claude 3 Sonnet costs $3.00 per 1M tokens for input and $15.00 per 1M tokens for output, as Anthropic lists it.
What is the knowledge cutoff of Claude 3 Sonnet?
The knowledge cutoff of Claude 3 Sonnet is August 2023.
More from Anthropic
- Claude 1.0
- Claude 1.1
- Claude 1.2
- Claude 1.3
- Claude 2
- Claude 2.1
- Claude 3 Haiku
- Claude 3 Opus
- Claude 3.5 Haiku
- Claude Fable 5
- Claude Fable 5.1
- Claude Haiku 4.5
- Claude Haiku 5.5
- Claude Instant 1.0
- Claude Instant 1.1
- Claude Instant 1.2
- Claude Mythos Preview
- Claude Opus 4.1
- Claude Opus 4.5
- Claude Opus 4.6
- Claude Opus 4.7
- Claude Opus 4.8
- Claude Opus 5
- Claude Opus 5.5
Sources
- Introducing the next generation of Claude (read 16 October 2026)
- Model deprecations (read 16 October 2026)
- The Claude 3 Model Family: Opus, Sonnet, Haiku (read 16 October 2026)
- Anthropic List Prices — 2026-05-27 (read 16 October 2026)