Claude 3.5 SonnetvsGemini 3.1 Flash-Lite
Claude 3.5 Sonnet | Gemini 3.1 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. | 45%Best | 11% |
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. | 33.4% | — |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 59.4% | — |
Community preference (code) Arena Elo (Code)Like the text arena, but people vote on which AI writes better code. The votes become a chess-style Elo rating on arena.ai. Higher is better. | — | 1253 |
| Overview | ||
| Company | Anthropic | |
| Release date | Jun 20 2024 | Mar 3 2026 |
| Access | Proprietary | Proprietary |
Which is better: Claude 3.5 Sonnet or Gemini 3.1 Flash-Lite?
Claude 3.5 Sonnet leads Gemini 3.1 Flash-Lite on 1 of the 1 benchmark they both report (BullshitBench v2). Claude 3.5 Sonnet shipped 621 days before Gemini 3.1 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.
On BullshitBench v2, Claude 3.5 Sonnet leads at 45% vs Gemini 3.1 Flash-Lite at 11%.
Frequently asked questions
Claude 3.5 Sonnet was released by Anthropic on Jun 20 2024.
Gemini 3.1 Flash-Lite was released by Google on Mar 3 2026.
Other comparisons
Claude 3.5 SonnetvsGPT-5.6 SolGemini 3.1 Flash-LitevsGPT-5.6 SolClaude 3.5 SonnetvsMuse GlimmerGemini 3.1 Flash-LitevsMuse GlimmerClaude 3.5 SonnetvsGrok 4.5Gemini 3.1 Flash-LitevsGrok 4.5Claude 3.5 SonnetvsDeepSeek-V4-Flash-0731Gemini 3.1 Flash-LitevsDeepSeek-V4-Flash-0731Claude 3.5 SonnetvsMistral Medium 3.5Gemini 3.1 Flash-LitevsMistral Medium 3.5Claude 3.5 SonnetvsKimi K3Gemini 3.1 Flash-LitevsKimi K3