Gemini 2.5 Flash Preview vs Gemini Ultra: Benchmarks, Pricing, and Context Window Comparison
Gemini 2.5 Flash Preview vs Gemini Ultra 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
Use pricing, benchmark scores, context window limits, and release recency together to choose between Gemini 2.5 Flash Preview and Gemini Ultra.
Author: Mirai Minds Research Team
Last updated:
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Overview
Gemini 2.5 Flash Preview was released 15 months after Gemini Ultra.
| Gemini 2.5 Flash Preview | Gemini Ultra | |
|---|---|---|
Provider The entity that provides this model. | Google | Google |
Input Context Window The number of tokens supported by the input context window. | 1,048,576 tokens | 32.8K tokens |
Maximum Output Tokens The number of tokens that can be generated by the model in a single request. | 65,536 tokens | 8,192 tokens |
Release Date When the model was first released. | Apr 17, 2025 about 11 monthsago 2025-04-17 | Feb 08, 2024 over 1 year 2024-02-08 |
Leaderboard
| Gemini 2.5 Flash Preview | Gemini Ultra | |
|---|---|---|
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 Flash Preview | Gemini Ultra | |
|---|---|---|
Input Cost of input data provided to the model. | $0.15 per million tokens | Pricing not available. |
Output Cost of output tokens generated by the model. | $0.60 per million tokens | Pricing not available. |
Benchmarks
Compare relevant benchmarks between Gemini 2.5 Flash Preview and Gemini Ultra Instruct.
| Gemini 2.5 Flash Preview | Gemini Ultra | |
|---|---|---|
MMLU Evaluating LLM knowledge acquisition in zero-shot and few-shot settings. | 88.4 (5-shot) | 83.7 (5-shot) |
MMMU A wide ranging multi-discipline and multimodal benchmark. | 76.7 | 59.4 |
HellaSwag A challenging sentence completion benchmark. | Benchmark not available. | Benchmark not available. |
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