DeepSeek Chat (R1-based)vsGemini 3.5 Flash-Lite
DeepSeek Chat (R1-based) | Gemini 3.5 Flash-Lite | |
|---|---|---|
| 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. | — | 54.2% |
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. | — | 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% |
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 | DeepSeek Chat (R1-based) shipped 547 days before Gemini 3.5 Flash-Lite | |
| Overview | ||
| Company | DeepSeek | |
| Release date | Jan 20 2025 | Jul 21 2026 |
| Access | Open Weight | Proprietary |
Which is better: DeepSeek Chat (R1-based) or Gemini 3.5 Flash-Lite?
DeepSeek Chat (R1-based) 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. DeepSeek Chat (R1-based) shipped 547 days before Gemini 3.5 Flash-Lite, so benchmark comparisons should account for the intervening progress.
DeepSeek Chat (R1-based) is open weight, while Gemini 3.5 Flash-Lite is proprietary.
Direct benchmark comparisons are unavailable — DeepSeek Chat (R1-based) and Gemini 3.5 Flash-Lite don't publish scores on any of the same benchmarks.
Frequently asked questions
DeepSeek Chat (R1-based) was released by DeepSeek on Jan 20 2025.
Gemini 3.5 Flash-Lite was released by Google on Jul 21 2026.
DeepSeek Chat (R1-based) is an open weight model released by DeepSeek. Gemini 3.5 Flash-Lite is a proprietary model released by Google.