Claude Sonnet 4vsGemini 3.5 Flash-Lite
Claude Sonnet 4 | Gemini 3.5 Flash-Lite | |
|---|---|---|
| Benchmarks | ||
Nonsense detection BullshitBench v2Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better. | 30% | — |
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. | — | 54.2% |
Coding SWE-Bench VerifiedReal coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. | 72.7% | — |
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. | — | 54% |
Browser agent BU BenchCan the AI drive a real web browser to finish tasks — clicking, filling forms, and navigating sites the way a person would? Run by Browser Use on their BU Bench task set. Higher is better. | — | 49% |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 75.4% | — |
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. | — | 74% |
Knowledge work GDPval-AA v2economically valuable knowledge work (v2, re-based Elo) | — | 1140 |
| Timeline | ||
| Release gap | Claude Sonnet 4 shipped 425 days before Gemini 3.5 Flash-Lite | |
| Overview | ||
| Company | Anthropic | |
| Release date | May 22 2025 | Jul 21 2026 |
| Access | Proprietary | Proprietary |
Which is better: Claude Sonnet 4 or Gemini 3.5 Flash-Lite?
Claude Sonnet 4 and Gemini 3.5 Flash-Lite don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Claude Sonnet 4 shipped 425 days before Gemini 3.5 Flash-Lite, 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 Sonnet 4 and Gemini 3.5 Flash-Lite don't publish scores on any of the same benchmarks.
Frequently asked questions
Claude Sonnet 4 was released by Anthropic on May 22 2025.
Gemini 3.5 Flash-Lite was released by Google on Jul 21 2026.
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