Model Comparison

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

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

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

Performance Benchmarks

Comparative analysis across standard metrics

6 benchmarks

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

Gemini 3 Flash significantly outperforms across most benchmarks.

Wed Jul 22 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 2.5 Flash-Lite ($0.10/1M tokens) is 5.0x cheaper than Gemini 3 Flash ($0.50/1M tokens).

For output processing, Gemini 2.5 Flash-Lite ($0.40/1M tokens) is 7.5x cheaper than Gemini 3 Flash ($3.00/1M 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
Wed Jul 22 2026 • llm-stats.com
Google
Gemini 2.5 Flash-Lite
Input tokens$0.10
Output tokens$0.40
Best providerGoogle
Google
Gemini 3 Flash
Input tokens$0.50
Output tokens$3.00
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 2.5 Flash-Lite
Input1,048,576 tokens
Output65,536 tokens
Google
Gemini 3 Flash
Input1,000,000 tokens
Output65,536 tokens
Wed Jul 22 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

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

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

Gemini 2.5 Flash-Lite

Text
Images
Audio
Video

Gemini 3 Flash

Text
Images
Audio
Video

License

Usage and distribution terms

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

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

Gemini 2.5 Flash-Lite

Creative Commons Attribution 4.0 License

Open weights

Gemini 3 Flash

Proprietary

Closed source

Release Timeline

When each model was launched

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

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

Gemini 2.5 Flash-Lite

Jun 17, 2025

1.1 years ago

Gemini 3 Flash

Dec 17, 2025

7 months ago

6mo newer

Knowledge Cutoff

When training data ends

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

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 2.5 Flash-Lite

Jan 2025

Gemini 3 Flash

Jan 2025

Provider Availability

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

Gemini 2.5 Flash-Lite

google logo
Google
Input Price:Input: $0.10/1MOutput Price:Output: $0.40/1M

Gemini 3 Flash

google logo
Google
Input Price:Input: $0.50/1MOutput Price:Output: $3.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

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%)
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%)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Gemini 2.5 Flash-Lite and Gemini 3 Flash side-by-side, then vote on the output you prefer.

Gemini 2.5 Flash-Lite
✓ Preferred
Gemini 3 Flash
Open in Playground
AI Model Comparison Table
Feature
Google
Gemini 2.5 Flash-Lite
Google
Gemini 3 Flash

FAQ

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

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

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

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

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%. Gemini 3 Flash scores Vending-Bench 2: 100.0%, AIME 2025: 99.7%, Global PIQA: 92.8%, MMMLU: 91.8%, GPQA: 90.4%.

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

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

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

Gemini 2.5 Flash-Lite supports 1.0M tokens and Gemini 3 Flash 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 2.5 Flash-Lite and Gemini 3 Flash?

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

Related comparisons