Model Comparison

Gemini 1.5 Flash 8B vs o4-miniWhich is better in 2026?

o4-mini significantly outperforms across most benchmarks. Gemini 1.5 Flash 8B is 15.1x cheaper per token.

Verdict: Gemini 1.5 Flash 8B vs o4-mini — which is better?

Gemini 1.5 Flash 8B (by Google) and o4-mini (by OpenAI) 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 1.5 Flash 8B outperforms in 0 benchmarks, while o4-mini is better at 3 benchmarks (GPQA, MathVista, MMMU). o4-mini significantly outperforms across most benchmarks.

On price, Gemini 1.5 Flash 8B is roughly 15.1x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Gemini 1.5 Flash 8B also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.

Choose Gemini 1.5 Flash 8B if…

  • cost matters — it's about 15.1x cheaper per token
  • you process long inputs — it offers a 1,048,576 token context window

Choose o4-mini if…

  • you want the strongest raw capability — it leads on 3 of 3 shared benchmarks
  • you want the most recent training data — it shipped Apr 2025
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Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

Gemini 1.5 Flash 8B outperforms in 0 benchmarks, while o4-mini is better at 3 benchmarks (GPQA, MathVista, MMMU).

o4-mini significantly outperforms across most benchmarks.

Thu Jun 25 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Gemini 1.5 Flash 8B costs less

For input processing, Gemini 1.5 Flash 8B ($0.07/1M tokens) is 15.7x cheaper than o4-mini ($1.10/1M tokens).

For output processing, Gemini 1.5 Flash 8B ($0.30/1M tokens) is 14.7x cheaper than o4-mini ($4.40/1M tokens).

In conclusion, o4-mini is more expensive than Gemini 1.5 Flash 8B.*

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

Lowest available price from all providers
Thu Jun 25 2026 • llm-stats.com
Google
Gemini 1.5 Flash 8B
Input tokens$0.07
Output tokens$0.30
Best providerGoogle
OpenAI
o4-mini
Input tokens$1.10
Output tokens$4.40
Best providerOpenAI
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Context Window

Maximum input and output token capacity

Gemini 1.5 Flash 8B accepts 1,048,576 input tokens compared to o4-mini's 200,000 tokens. o4-mini can generate longer responses up to 100,000 tokens, while Gemini 1.5 Flash 8B is limited to 8,192 tokens.

Google
Gemini 1.5 Flash 8B
Input1,048,576 tokens
Output8,192 tokens
OpenAI
o4-mini
Input200,000 tokens
Output100,000 tokens
Thu Jun 25 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 1.5 Flash 8B and o4-mini support multimodal inputs.

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

Gemini 1.5 Flash 8B

Text
Images
Audio
Video

o4-mini

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 1.5 Flash 8B

Proprietary

Closed source

o4-mini

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 1.5 Flash 8B was released on 2024-03-15, while o4-mini was released on 2025-04-16.

o4-mini is 13 months newer than Gemini 1.5 Flash 8B.

Gemini 1.5 Flash 8B

Mar 15, 2024

2.3 years ago

o4-mini

Apr 16, 2025

1.2 years ago

1.1yr newer

Knowledge Cutoff

When training data ends

Gemini 1.5 Flash 8B has a knowledge cutoff of 2024-10-01, while o4-mini has a cutoff of 2024-05-31.

Gemini 1.5 Flash 8B has more recent training data (up to 2024-10-01), making it potentially better informed about events through that date compared to o4-mini (2024-05-31).

Gemini 1.5 Flash 8B

Oct 2024

5 mo newer
o4-mini

May 2024

Provider Availability

Gemini 1.5 Flash 8B is available from Google. o4-mini is available from OpenAI.

Gemini 1.5 Flash 8B

google logo
Google
Input Price:Input: $0.07/1MOutput Price:Output: $0.30/1M

o4-mini

openai logo
OpenAI
Input Price:Input: $1.10/1MOutput Price:Output: $4.40/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Google
Larger context window (1,048,576 tokens)
Less expensive input tokens
Less expensive output tokens
OpenAI
Higher GPQA score (81.4% vs 38.4%)
Higher MathVista score (84.3% vs 54.7%)
Higher MMMU score (81.6% vs 53.7%)
GoogleGemini 1.5 Flash 8B
OpenAIo4-mini
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Detailed Comparison

AI Model Comparison Table
Feature
Google
Gemini 1.5 Flash 8B
OpenAI
o4-mini

FAQ

Common questions about Gemini 1.5 Flash 8B vs o4-mini.

Which is better, Gemini 1.5 Flash 8B or o4-mini?

o4-mini significantly outperforms across most benchmarks. Gemini 1.5 Flash 8B is made by Google and o4-mini is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Gemini 1.5 Flash 8B compare to o4-mini in benchmarks?

Gemini 1.5 Flash 8B scores XSTest: 92.6%, FLEURS: 86.4%, Natural2Code: 75.5%, WMT23: 72.6%, Video-MME: 66.2%. o4-mini scores AIME 2024: 93.4%, AIME 2025: 92.7%, MathVista: 84.3%, MMMU: 81.6%, GPQA: 81.4%.

Is Gemini 1.5 Flash 8B cheaper than o4-mini?

Gemini 1.5 Flash 8B is 15.7x cheaper for input tokens. Gemini 1.5 Flash 8B costs $0.07/M input and $0.30/M output via google. o4-mini costs $1.10/M input and $4.40/M output via openai.

What are the context window sizes for Gemini 1.5 Flash 8B and o4-mini?

Gemini 1.5 Flash 8B supports 1.0M tokens and o4-mini supports 200K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 1.5 Flash 8B and o4-mini?

Key differences include context window (1.0M vs 200K), input pricing ($0.07 vs $1.10/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 1.5 Flash 8B and o4-mini?

Gemini 1.5 Flash 8B is developed by Google and o4-mini is developed by OpenAI.

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