Gemini 3.1 Flash Lite vs o4 Mini Deep Research (Comparative Analysis)
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Comparative Analysis: Gemini 3.1 Flash Lite vs. o4 Mini Deep Research
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Overview
o4 Mini Deep Research was released 6 months before Gemini 3.1 Flash Lite.
 Gemini 3.1 Flash Lite |  o4 Mini Deep Research | |
|---|---|---|
Model Provider The organization behind this AI's development | Google | OpenAI |
Input Context Window Maximum input tokens this model can process at once | 1M tokens | 200K tokens |
Output Token Limit Maximum output tokens this model can generate at once | 65.5K tokens | 100K tokens |
Release Date When this model first became publicly available | May 7, 2026 2 months ago May 7th, 2026 | October 10, 2025 9 months ago October 10th, 2025 |
Capabilities & Features
Compare supported features, modalities, and advanced capabilities
Gemini 3.1 Flash Lite | o4 Mini Deep Research | |
|---|---|---|
Input Types Supported input formats | 📝Text🖼️Image🎬Video📁File🎵Audio | 📁File🖼️Image📝Text |
Reasoning Controls Defaults and configurable reasoning effort | Enabled by defaultEffort: High, Medium, Low, MinimalDefault: Minimal | Optional |
Output Types Supported output formats | 📝Text | 📝Text |
Tokenizer Text encoding system | Gemini | GPT |
Key Features Advanced capabilities | ✓Function Calling✓Structured Output✓Reasoning ModeContent Moderation | ✓Function Calling✓Structured Output✓Reasoning Mode✓Content Moderation |
Pricing
Gemini 3.1 Flash Lite is roughly 0.1x less expensive compared to o4 Mini Deep Research for input tokens and roughly 0.2x less expensive for output tokens.
| Gemini 3.1 Flash Lite | o4 Mini Deep Research | |
|---|---|---|
Input Token Cost Cost per million input tokens | $0.25 per million tokens | $2.00 per million tokens |
Output Token Cost Cost per million output tokens | $1.50 per million tokens | $8.00 per million tokens |
Web Search Cost Additional cost for each web search operation | $0.014 per search | $0.01 per search |
Cache Read Cost Cost to reuse cached input tokens | $0.02 per million tokens | $0.50 per million tokens |
Cache Write Cost Cost to write input tokens to the cache | $0.08 per million tokens | Not specified |
Reasoning Token Cost Cost for internal reasoning tokens | $1.50 per million tokens | Not specified |
Image Input Cost Additional cost for each image input | $0.00000025 per image | Not specified |
Audio Input Cost Additional cost for audio input | $0.0000005 per unit | Not specified |
Audio Cache Cost Cost to reuse cached audio input tokens | $0.05 per million tokens | Not specified |
At a Glance
Quick overview of what makes Gemini 3.1 Flash Lite and o4 Mini Deep Research unique.
Gemini 3.1 Flash Lite by Google understands both text and images, handles audio, analyzes video, can use external tools and APIs, offers advanced reasoning, generates structured data. It can handle standard conversations with its 1M token context window. Very affordable at $0.25/M input and $1.50/M output tokens. Released May 7th, 2026.o4 Mini Deep Research by OpenAI understands both text and images, can use external tools and APIs, offers advanced reasoning, generates structured data. It can handle standard conversations with its 200K token context window. Reasonably priced at $2.00/M input and $8.00/M output tokens. Includes built-in content moderation for safer outputs. Released October 10th, 2025.Explore More Comparisons
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Compare o4 Mini Deep Research with:
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