Claude 3 Sonnet vs Claude Sonnet 5
Anthropic Claude 3 Sonnet | Anthropic Claude Sonnet 5 | |
|---|---|---|
| Overview | ||
| Company | Anthropic | Anthropic |
| Release date | Mar 4 2024 | Jun 30 2026 |
| Access | Proprietary | Proprietary |
| Benchmarks | ||
Agentic coding SWE-Bench ProCan the AI fix real bugs in real software? It's handed actual problems from open-source projects and has to write code that genuinely solves them. Higher is better. | — | 63.2% |
Agentic coding CursorBench v3.1Cursor's own test of harder, real-world coding tasks inside a code editor. Higher is better. | — | 61.2% |
Agentic terminal coding Terminal-Bench 2.1Can the AI work in a command-line terminal — running commands and finishing technical setup tasks the way a developer would? Higher is better. | — | 80.4% |
Multidisciplinary reasoning Humanity's Last Exam · no toolsHumanity's Last Exam — extremely hard expert questions across many subjects, written so you can't just look up the answer. “No tools” means the AI answers on its own. Higher is better. | — | 43.2% |
Multidisciplinary reasoning Humanity's Last Exam · with toolsHumanity's Last Exam — extremely hard expert questions across many subjects. “With tools” means the AI is allowed to search the web or run code while answering. Higher is better. | — | 57.4% |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 40.4% | — |
Agentic computer use OSWorld-VerifiedCan the AI actually operate a computer — clicking, typing, and using real apps — to finish tasks on its own? Higher is better. | — | 81.2% |
Knowledge work GDPval-AAMeasures how well the AI does economically valuable knowledge work, judged against human experts. Shown as a rating (like a chess Elo) — higher is better. | — | 1618 |
| Timeline | ||
| Release gap | Claude 3 Sonnet shipped 848 days before Claude Sonnet 5 | |
Which is better: Claude 3 Sonnet or Claude Sonnet 5?
Claude 3 Sonnet and Claude Sonnet 5 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Claude 3 Sonnet shipped 848 days before Claude Sonnet 5, so benchmark comparisons should account for the intervening progress.
Published specifications for these two models are limited — see each model page for the latest details.
Direct benchmark comparisons are unavailable — Claude 3 Sonnet and Claude Sonnet 5 don't publish scores on any of the same benchmarks.
Frequently asked questions
Claude 3 Sonnet was released by Anthropic on Mar 4 2024.
Claude Sonnet 5 was released by Anthropic on Jun 30 2026.
Other comparisons
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