Gemini 3.1 Flash Lite vs GPT-3.5 Turbo Instruct (Comparative Analysis)
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Comparative Analysis: Gemini 3.1 Flash Lite vs. GPT-3.5 Turbo Instruct
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Overview
GPT-3.5 Turbo Instruct was released 2 years before Gemini 3.1 Flash Lite.
 Gemini 3.1 Flash Lite |  GPT-3.5 Turbo Instruct | |
|---|---|---|
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 | 4.1K tokens |
Output Token Limit Maximum output tokens this model can generate at once | 65.5K tokens | 4.1K tokens |
Release Date When this model first became publicly available | May 7, 2026 2 months ago May 7th, 2026 | September 28, 2023 2 years ago September 28th, 2023 |
Knowledge Cutoff Latest training-data date reported by the provider | Not reported | September 30, 2021 |
Capabilities & Features
Compare supported features, modalities, and advanced capabilities
Gemini 3.1 Flash Lite | GPT-3.5 Turbo Instruct | |
|---|---|---|
Input Types Supported input formats | 📝Text🖼️Image🎬Video📁File🎵Audio | 📝Text |
Reasoning Controls Defaults and configurable reasoning effort | Enabled by defaultEffort: High, Medium, Low, MinimalDefault: Minimal | Not reported |
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 OutputReasoning Mode✓Content Moderation |
Pricing
Gemini 3.1 Flash Lite is roughly 0.2x less expensive compared to GPT-3.5 Turbo Instruct for input tokens and roughly 0.8x less expensive for output tokens.
| Gemini 3.1 Flash Lite | GPT-3.5 Turbo Instruct | |
|---|---|---|
Input Token Cost Cost per million input tokens | $0.25 per million tokens | $1.50 per million tokens |
Output Token Cost Cost per million output tokens | $1.50 per million tokens | $2.00 per million tokens |
Web Search Cost Additional cost for each web search operation | $0.014 per search | Not specified |
Cache Read Cost Cost to reuse cached input tokens | $0.02 per million tokens | Not specified |
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 GPT-3.5 Turbo Instruct 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.GPT-3.5 Turbo Instruct by OpenAI generates structured data. It can handle standard conversations with its 4.1K token context window. Reasonably priced at $1.50/M input and $2.00/M output tokens. Includes built-in content moderation for safer outputs. Released September 28th, 2023.Explore More Comparisons
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Compare GPT-3.5 Turbo Instruct with:
🚀Programming
Best models for coding and development
🎨Creative & Roleplay
Models optimized for creative writing
📢Marketing
Content creation and marketing tasks
💻Technology
Technical analysis and explanations
🔬Science
Scientific research and analysis
🌐Translation
Multilingual translation tasks