Model Comparison

Gemini 3 Flash vs Gemini 2.5 Flash-LiteWhich is better in 2026?

Gemini 3 Flash significantly outperforms across most benchmarks. Gemini 2.5 Flash-Lite is 6.4x cheaper per token.

Verdict: Gemini 3 Flash vs Gemini 2.5 Flash-Lite — which is better?

Gemini 3 Flash (by Google) and Gemini 2.5 Flash-Lite (by Google) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

Gemini 3 Flash outperforms in 5 benchmarks (AIME 2025, GPQA, Humanity's Last Exam, SimpleQA, SWE-Bench Verified), while Gemini 2.5 Flash-Lite is better at 1 benchmark (FACTS Grounding). Gemini 3 Flash significantly outperforms across most benchmarks.

On price, Gemini 2.5 Flash-Lite is roughly 6.4x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Gemini 2.5 Flash-Lite also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.

Choose Gemini 3 Flash if…

  • you want the strongest raw capability — it leads on 5 of 6 shared benchmarks
  • you want the most recent training data — it shipped Dec 2025

Choose Gemini 2.5 Flash-Lite if…

  • cost matters — it's about 6.4x cheaper per token
  • you process long inputs — it offers a 1,048,576 token context window
  • you need open weights you can self-host or fine-tune
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Performance Benchmarks

Comparative analysis across standard metrics

6 benchmarks

Gemini 3 Flash outperforms in 5 benchmarks (AIME 2025, GPQA, Humanity's Last Exam, SimpleQA, SWE-Bench Verified), while Gemini 2.5 Flash-Lite is better at 1 benchmark (FACTS Grounding).

Gemini 3 Flash significantly outperforms across most benchmarks.

Sat Jun 13 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Gemini 2.5 Flash-Lite costs less

For input processing, Gemini 3 Flash ($0.50/1M tokens) is 5.0x more expensive than Gemini 2.5 Flash-Lite ($0.10/1M tokens).

For output processing, Gemini 3 Flash ($3.00/1M tokens) is 7.5x more expensive than Gemini 2.5 Flash-Lite ($0.40/1M tokens).

In conclusion, Gemini 3 Flash is more expensive than Gemini 2.5 Flash-Lite.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Sat Jun 13 2026 • llm-stats.com
Google
Gemini 3 Flash
Input tokens$0.50
Output tokens$3.00
Best providerGoogle
Google
Gemini 2.5 Flash-Lite
Input tokens$0.10
Output tokens$0.40
Best providerGoogle
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Gemini 2.5 Flash-Lite accepts 1,048,576 input tokens compared to Gemini 3 Flash's 1,000,000 tokens. Both models can generate responses up to 65,536 tokens.

Google
Gemini 3 Flash
Input1,000,000 tokens
Output65,536 tokens
Google
Gemini 2.5 Flash-Lite
Input1,048,576 tokens
Output65,536 tokens
Sat Jun 13 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 3 Flash and Gemini 2.5 Flash-Lite support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Gemini 3 Flash

Text
Images
Audio
Video

Gemini 2.5 Flash-Lite

Text
Images
Audio
Video

License

Usage and distribution terms

Gemini 3 Flash is licensed under a proprietary license, while Gemini 2.5 Flash-Lite uses Creative Commons Attribution 4.0 License.

License differences may affect how you can use these models in commercial or open-source projects.

Gemini 3 Flash

Proprietary

Closed source

Gemini 2.5 Flash-Lite

Creative Commons Attribution 4.0 License

Open weights

Release Timeline

When each model was launched

Gemini 3 Flash was released on 2025-12-17, while Gemini 2.5 Flash-Lite was released on 2025-06-17.

Gemini 3 Flash is 6 months newer than Gemini 2.5 Flash-Lite.

Gemini 3 Flash

Dec 17, 2025

5 months ago

6mo newer
Gemini 2.5 Flash-Lite

Jun 17, 2025

12 months ago

Knowledge Cutoff

When training data ends

Gemini 3 Flash has a knowledge cutoff of 2025-01-31, while Gemini 2.5 Flash-Lite has a cutoff of 2025-01-01.

Gemini 3 Flash has more recent training data (up to 2025-01-31), making it potentially better informed about events through that date compared to Gemini 2.5 Flash-Lite (2025-01-01).

Gemini 3 Flash

Jan 2025

Gemini 2.5 Flash-Lite

Jan 2025

Provider Availability

Gemini 3 Flash is available from Google. Gemini 2.5 Flash-Lite is available from Google.

Gemini 3 Flash

google logo
Google
Input Price:Input: $0.50/1MOutput Price:Output: $3.00/1M

Gemini 2.5 Flash-Lite

google logo
Google
Input Price:Input: $0.10/1MOutput Price:Output: $0.40/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Google
Higher AIME 2025 score (99.7% vs 49.8%)
Higher GPQA score (90.4% vs 64.6%)
Higher Humanity's Last Exam score (43.5% vs 5.1%)
Higher SimpleQA score (68.7% vs 10.7%)
Higher SWE-Bench Verified score (78.0% vs 31.6%)
Google
Larger context window (1,048,576 tokens)
Less expensive input tokens
Less expensive output tokens
Has open weights
Higher FACTS Grounding score (84.1% vs 61.9%)

Detailed Comparison

AI Model Comparison Table
Feature
Google
Gemini 3 Flash
Google
Gemini 2.5 Flash-Lite

FAQ

Common questions about Gemini 3 Flash vs Gemini 2.5 Flash-Lite.

Which is better, Gemini 3 Flash or Gemini 2.5 Flash-Lite?

Gemini 3 Flash significantly outperforms across most benchmarks. Gemini 3 Flash is made by Google and Gemini 2.5 Flash-Lite is made by Google. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Gemini 3 Flash compare to Gemini 2.5 Flash-Lite in benchmarks?

Gemini 3 Flash scores Vending-Bench 2: 100.0%, AIME 2025: 99.7%, Global PIQA: 92.8%, MMMLU: 91.8%, GPQA: 90.4%. Gemini 2.5 Flash-Lite scores FACTS Grounding: 84.1%, Global-MMLU-Lite: 81.1%, MMMU: 72.9%, GPQA: 64.6%, Vibe-Eval: 51.3%.

Is Gemini 3 Flash cheaper than Gemini 2.5 Flash-Lite?

Gemini 2.5 Flash-Lite is 5.0x cheaper for input tokens. Gemini 3 Flash costs $0.50/M input and $3.00/M output via google. Gemini 2.5 Flash-Lite costs $0.10/M input and $0.40/M output via google.

What are the context window sizes for Gemini 3 Flash and Gemini 2.5 Flash-Lite?

Gemini 3 Flash supports 1.0M tokens and Gemini 2.5 Flash-Lite supports 1.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 3 Flash and Gemini 2.5 Flash-Lite?

Key differences include context window (1.0M vs 1.0M), input pricing ($0.50 vs $0.10/M), licensing (Proprietary vs Creative Commons Attribution 4.0 License). See the full comparison above for benchmark-by-benchmark results.

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