Gemini 1.0 Pro vs Gemini 2.5 Flash Preview: Benchmarks, Pricing, and Context Window Comparison
Gemini 1.0 Pro vs Gemini 2.5 Flash Preview 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
Gemini 2.5 Flash Preview has lower listed token pricing, while Gemini 1.0 Pro can still be preferable if benchmark results better match your workload.
Author: Mirai Minds Research Team
Last updated:
Compare
to
Overview
Gemini 1.0 Pro was released 16 months before Gemini 2.5 Flash Preview.
| Gemini 1.0 Pro | Gemini 2.5 Flash Preview | |
|---|---|---|
Provider The entity that provides this model. | Google | Google |
Input Context Window The number of tokens supported by the input context window. | 32.8K tokens | 1,048,576 tokens |
Maximum Output Tokens The number of tokens that can be generated by the model in a single request. | 8,192 tokens | 65,536 tokens |
Release Date When the model was first released. | Dec 13, 2023 over 1 yearago 2023-12-13 | Apr 17, 2025 over 1 year 2025-04-17 |
Leaderboard
| Gemini 1.0 Pro | Gemini 2.5 Flash Preview | |
|---|---|---|
Rank | 25 | Unknown |
Arena Elo | 1115 | Not specified. |
95% CI | +6/-6 | Not specified. |
Votes | 6818 | Not specified. |
License | Proprietary | Not specified. |
Knowledge Cutoff | 4/2023 4/2023 | Unknown |
Pricing
| Gemini 1.0 Pro | Gemini 2.5 Flash Preview | |
|---|---|---|
Input Cost of input data provided to the model. | $12.50 per million tokens | $0.15 per million tokens |
Output Cost of output tokens generated by the model. | $37.50 per million tokens | $0.60 per million tokens |
Benchmarks
Compare relevant benchmarks between Gemini 1.0 Pro and Gemini 2.5 Flash Preview Instruct.
| Gemini 1.0 Pro | Gemini 2.5 Flash Preview | |
|---|---|---|
MMLU Evaluating LLM knowledge acquisition in zero-shot and few-shot settings. | 71.8 (5-shot) | 88.4 (5-shot) |
MMMU A wide ranging multi-discipline and multimodal benchmark. | 47.9 | 76.7 |
HellaSwag A challenging sentence completion benchmark. | Benchmark not available. | Benchmark not available. |