Background Logo
Mirai Minds

Gemini 2.5 Pro vs GPT-3.5 Turbo 16K: Benchmarks, Pricing, and Context Window Comparison

Gemini 2.5 Pro vs GPT-3.5 Turbo 16K compares provider, context window, token pricing, benchmark performance, and release timeline in one side-by-side view. Use this page to quickly identify which model is a better fit for your production constraints, quality targets, and estimated cost per request.

Verdict

GPT-3.5 Turbo 16K has lower listed token pricing, while Gemini 2.5 Pro can still be preferable if benchmark results better match your workload.

Author: Mirai Minds Research Team

Last updated:

Sources

Compare
Gemini 2.5 Pro
to
GPT-3.5 Turbo 16K
Overview
Gemini 2.5 Pro was released 22 months after GPT-3.5 Turbo 16K.
Gemini 2.5 Pro
GPT-3.5 Turbo 16K
Provider
The entity that provides this model.
Google
OpenAI
Input Context Window
The number of tokens supported by the input context window.
2M
tokens
16.4K
tokens
Maximum Output Tokens
The number of tokens that can be generated by the model in a single request.
64K
tokens
16.4K
tokens
Release Date
When the model was first released.
2025-03-25
2023-06-13
Leaderboard
Gemini 2.5 Pro
GPT-3.5 Turbo 16K
Rank
Unknown
Unknown
Arena Elo
Not specified.
Not specified.
95% CI
Not specified.
Not specified.
Votes
Not specified.
Not specified.
License
Not specified.
Not specified.
Knowledge Cutoff
Unknown
Unknown
Pricing
Gemini 2.5 Pro
GPT-3.5 Turbo 16K
Input
Cost of input data provided to the model.
$1.25
per million tokens
$3.00
per million tokens
Output
Cost of output tokens generated by the model.
$10.00
per million tokens
$4.00
per million tokens
Benchmarks
Compare relevant benchmarks between Gemini 2.5 Pro and GPT-3.5 Turbo 16K Instruct.
Gemini 2.5 Pro
GPT-3.5 Turbo 16K
MMLU
Evaluating LLM knowledge acquisition in zero-shot and few-shot settings.
Benchmark not available.
Benchmark not available.
MMMU
A wide ranging multi-discipline and multimodal benchmark.
81.7
Source
Benchmark not available.
HellaSwag
A challenging sentence completion benchmark.
Benchmark not available.
Benchmark not available.

Ready to kick off?

sneh[at]miraiminds.co

© 2026 Mirai Minds

Mirai Minds

Mirai Minds