Model Comparison

Gemini 2.5 Flash vs Gemini 2.5 Pro Preview 06-05

Gemini 2.5 Pro Preview 06-05 significantly outperforms across most benchmarks. Gemini 2.5 Flash is 4.0x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

10 benchmarks

Gemini 2.5 Flash outperforms in 0 benchmarks, while Gemini 2.5 Pro Preview 06-05 is better at 10 benchmarks (Aider-Polyglot, AIME 2025, FACTS Grounding, Global-MMLU-Lite, GPQA, Humanity's Last Exam, MMMU, SimpleQA, SWE-Bench Verified, Vibe-Eval).

Gemini 2.5 Pro Preview 06-05 significantly outperforms across most benchmarks.

Mon May 25 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Gemini 2.5 Flash costs less

For input processing, Gemini 2.5 Flash ($0.30/1M tokens) is 4.2x cheaper than Gemini 2.5 Pro Preview 06-05 ($1.25/1M tokens).

For output processing, Gemini 2.5 Flash ($2.50/1M tokens) is 4.0x cheaper than Gemini 2.5 Pro Preview 06-05 ($10.00/1M tokens).

In conclusion, Gemini 2.5 Pro Preview 06-05 is more expensive than Gemini 2.5 Flash.*

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

Lowest available price from all providers

Mon May 25 2026 • llm-stats.com

Gemini 2.5 Flash

Input tokens$0.30

Output tokens$2.50

Best providerGoogle

Gemini 2.5 Pro Preview 06-05

Input tokens$1.25

Output tokens$10.00

Best providerGoogle

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Context Window

Maximum input and output token capacity

Both models have the same input context window of 1,048,576 tokens. Gemini 2.5 Flash can generate longer responses up to 65,536 tokens, while Gemini 2.5 Pro Preview 06-05 is limited to 65,535 tokens.

Gemini 2.5 Flash

Input1,048,576 tokens

Output65,536 tokens

Gemini 2.5 Pro Preview 06-05

Input1,048,576 tokens

Output65,535 tokens

Mon May 25 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 2.5 Flash and Gemini 2.5 Pro Preview 06-05 support multimodal inputs.

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

Gemini 2.5 Flash

Text

Images

Audio

Video

Gemini 2.5 Pro Preview 06-05

Text

Images

Audio

Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Gemini 2.5 Flash

Proprietary

Closed source

Gemini 2.5 Pro Preview 06-05

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 2.5 Flash was released on 2025-05-20, while Gemini 2.5 Pro Preview 06-05 was released on 2025-06-05.

Gemini 2.5 Pro Preview 06-05 is 1 month newer than Gemini 2.5 Flash.

Gemini 2.5 Flash

May 20, 2025

1.0 years ago

Gemini 2.5 Pro Preview 06-05

Jun 5, 2025

11 months ago

2w newer

Knowledge Cutoff

When training data ends

Both models have the same knowledge cutoff date of 2025-01-31.

They should have similar awareness of historical events and information up to this date.

Gemini 2.5 Flash

Jan 2025

Gemini 2.5 Pro Preview 06-05

Jan 2025

Provider Availability

Gemini 2.5 Flash is available from Google. Gemini 2.5 Pro Preview 06-05 is available from Google.

Gemini 2.5 Flash

Google

Input Price:Input: $0.30/1MOutput Price:Output: $2.50/1M

Gemini 2.5 Pro Preview 06-05

Google

Input Price:Input: $1.25/1MOutput Price:Output: $10.00/1M

* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Gemini 2.5 Flash

View details

Google

Less expensive input tokens

Less expensive output tokens

Gemini 2.5 Pro Preview 06-05

View details

Google

Higher Aider-Polyglot score (82.2% vs 61.9%)

Higher AIME 2025 score (88.0% vs 72.0%)

Higher FACTS Grounding score (87.8% vs 85.3%)

Higher Global-MMLU-Lite score (89.2% vs 88.4%)

Higher GPQA score (86.4% vs 82.8%)

Higher Humanity's Last Exam score (21.6% vs 11.0%)

Higher MMMU score (82.0% vs 79.7%)

Higher SimpleQA score (54.0% vs 26.9%)

Higher SWE-Bench Verified score (67.2% vs 60.4%)

Higher Vibe-Eval score (67.2% vs 65.4%)

Gemini 2.5 Flash

Gemini 2.5 Pro Preview 06-05

Compare in Playground

Detailed Comparison

AI Model Comparison Table
Feature	Gemini 2.5 Flash	Gemini 2.5 Pro Preview 06-05

FAQ

Common questions about Gemini 2.5 Flash vs Gemini 2.5 Pro Preview 06-05.

Which is better, Gemini 2.5 Flash or Gemini 2.5 Pro Preview 06-05?

Gemini 2.5 Pro Preview 06-05 significantly outperforms across most benchmarks. Gemini 2.5 Flash is made by Google and Gemini 2.5 Pro Preview 06-05 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 compare to Gemini 2.5 Pro Preview 06-05 in benchmarks?

Gemini 2.5 Flash scores Global-MMLU-Lite: 88.4%, AIME 2024: 88.0%, FACTS Grounding: 85.3%, GPQA: 82.8%, MMMU: 79.7%. Gemini 2.5 Pro Preview 06-05 scores Global-MMLU-Lite: 89.2%, AIME 2025: 88.0%, FACTS Grounding: 87.8%, GPQA: 86.4%, VideoMMMU: 83.6%.

Is Gemini 2.5 Flash cheaper than Gemini 2.5 Pro Preview 06-05?

Gemini 2.5 Flash is 4.2x cheaper for input tokens. Gemini 2.5 Flash costs $0.30/M input and $2.50/M output via google. Gemini 2.5 Pro Preview 06-05 costs $1.25/M input and $10.00/M output via google.

What are the context window sizes for Gemini 2.5 Flash and Gemini 2.5 Pro Preview 06-05?

Gemini 2.5 Flash supports 1.0M tokens and Gemini 2.5 Pro Preview 06-05 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 and Gemini 2.5 Pro Preview 06-05?

Key differences include input pricing ($0.30 vs $1.25/M). See the full comparison above for benchmark-by-benchmark results.