gemini-2.5-flash vs gemini-2.5-pro
Side-by-side comparison of gemini-2.5-flash and gemini-2.5-pro — benchmarks, pricing, context window and capabilities. Both are accessible through Requesty's unified API. gemini-2.5-pro outperforms gemini-2.5-flash on 9 of 9 shared benchmarks.
gemini-2.5-flash
Input / 1M
$0.30
Output / 1M
$2.50
Context
1.0M
Model ID
google/gemini-2.5-flash
gemini-2.5-pro
Input / 1M
$1.25
Output / 1M
$10.00
Context
1.0M
Model ID
google/gemini-2.5-pro
Benchmark comparison
MMLU Proknowledge
gemini-2.5-flash78.4%
gemini-2.5-pro86.2%
GPQA Diamondreasoning
gemini-2.5-flash68.3%
gemini-2.5-pro84.0%
HumanEvalcoding
gemini-2.5-flash88.5%
gemini-2.5-pro93.2%
SWE-Bench Verifiedcoding
gemini-2.5-flash53.2%
gemini-2.5-pro63.8%
MATHmath
gemini-2.5-flash85.3%
gemini-2.5-pro91.4%
AIME 2024math
gemini-2.5-flash72.1%
gemini-2.5-pro88.0%
MMMUmultimodal
gemini-2.5-flash72.5%
gemini-2.5-pro81.7%
LiveBenchreasoning
gemini-2.5-flash64.2%
gemini-2.5-pro73.6%
τ-bench Retailagentic
gemini-2.5-flash61.5%
gemini-2.5-pro69.8%
Scores sourced from official model cards, Artificial Analysis, and public leaderboards. Benchmarks measure specific skills and don't capture every aspect of model quality.
Pricing & specifications
| gemini-2.5-flash | gemini-2.5-pro | |
|---|---|---|
| Input price / 1M | $0.30 | $1.25 |
| Output price / 1M | $2.50 | $10.00 |
| Context window | 1.0M tokens | 1.0M tokens |
| Max output | 66K tokens | 66K tokens |
| Vision input | Yes | Yes |
| Tool calling | Yes | Yes |
| Reasoning | Yes | Yes |
| Prompt caching | Yes | Yes |
| Computer use | — | — |
| Provider | Google LLC (Gemini API) | Google LLC (Gemini API) |
Questions people ask
Is gemini-2.5-flash better than gemini-2.5-pro?
gemini-2.5-pro outperforms gemini-2.5-flash on 9 of 9 shared benchmarks. See the benchmark comparison above for specifics — gemini-2.5-flash and gemini-2.5-pro have different strengths across reasoning, coding, math and multimodal tasks.
Which is cheaper — gemini-2.5-flash or gemini-2.5-pro?
gemini-2.5-flash is cheaper. gemini-2.5-flash costs $0.30/$2.50 per 1M input/output tokens, while gemini-2.5-pro costs $1.25/$10.00.
Can I use gemini-2.5-flash and gemini-2.5-pro through the same API?
Yes. Requesty provides a single OpenAI-compatible API that routes to both. Change just the "model" parameter to switch — "google/gemini-2.5-flash" or "google/gemini-2.5-pro" — no other code changes needed.
What are the context windows?
gemini-2.5-flash supports up to 1.0M tokens of context. gemini-2.5-pro supports up to 1.0M tokens. Longer context means you can feed larger documents or codebases in a single prompt, though quality often degrades past 128K for most models.
Switch between gemini-2.5-flash and gemini-2.5-pro with one line of code
Requesty provides a single OpenAI-compatible API for 400+ models. Change the model parameter, not your code.
Get started free