Gemini 2.5 Pro is Google’s state-of-the-art AI model designed for advanced reasoning, coding, mathematics, and scientific tasks. It employs “thinking” capabilities, enabling it to reason through responses with enhanced accuracy and nuanced …
Model details →Google: Gemini 2.5 Pro Preview 05-06 vs OpenAI: GPT-3.5 Turbo (older v0613)
Google: Gemini 2.5 Pro Preview 05-06 wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
GPT-3.5 Turbo is OpenAI's fastest model. It can understand and generate natural language or code, and is optimized for chat and traditional completion tasks. Training data up to Sep 2021.
Model details →Side-by-side comparison
| Capability | Google: Gemini 2.5 Pro Preview 05-06 | OpenAI: GPT-3.5 Turbo (older v0613) | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 1.0M | 4K | 🏆 Google: Gemini 2.5 Pro Preview 05-06 |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $1.25 | $1.00 | 🏆 OpenAI: GPT-3.5 Turbo (older v0613) |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $10.00 | $2.00 | 🏆 OpenAI: GPT-3.5 Turbo (older v0613) |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | Yes | — | 🏆 Google: Gemini 2.5 Pro Preview 05-06 |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | — | 🏆 Google: Gemini 2.5 Pro Preview 05-06 |
Frequently asked questions
Is Google: Gemini 2.5 Pro Preview 05-06 better than OpenAI: GPT-3.5 Turbo (older v0613)?
Google: Gemini 2.5 Pro Preview 05-06 wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between Google: Gemini 2.5 Pro Preview 05-06 and OpenAI: GPT-3.5 Turbo (older v0613)?
Input: $1.25 vs $1.00 per 1M tokens. Output: $10.00 vs $2.00 per 1M tokens.
What context windows do Google: Gemini 2.5 Pro Preview 05-06 and OpenAI: GPT-3.5 Turbo (older v0613) support?
Google: Gemini 2.5 Pro Preview 05-06 supports up to 1.0M tokens. OpenAI: GPT-3.5 Turbo (older v0613) supports up to 4K tokens.
Do both Google: Gemini 2.5 Pro Preview 05-06 and OpenAI: GPT-3.5 Turbo (older v0613) support tool calling?
Google: Gemini 2.5 Pro Preview 05-06: yes. OpenAI: GPT-3.5 Turbo (older v0613): yes.