Model Comparison

Gemini 2.5 Pro Preview 06-05 vs GPT OSS 120BWhich is better in 2026?

Gemini 2.5 Pro Preview 06-05 significantly outperforms across most benchmarks. GPT OSS 120B is 19.1x cheaper per token.

Verdict: Gemini 2.5 Pro Preview 06-05 vs GPT OSS 120B — which is better?

Gemini 2.5 Pro Preview 06-05 (by Google) and GPT OSS 120B (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 2.5 Pro Preview 06-05 outperforms in 2 benchmarks (GPQA, Humanity's Last Exam), while GPT OSS 120B is better at 0 benchmarks. Gemini 2.5 Pro Preview 06-05 significantly outperforms across most benchmarks.

On price, GPT OSS 120B is roughly 19.1x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Gemini 2.5 Pro Preview 06-05 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 Pro Preview 06-05 if…

  • you want the strongest raw capability — it leads on 2 of 2 shared benchmarks
  • you process long inputs — it offers a 1,048,576 token context window

Choose GPT OSS 120B if…

  • cost matters — it's about 19.1x cheaper per token
  • you want the most recent training data — it shipped Aug 2025
  • you need open weights you can self-host or fine-tune

Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

Gemini 2.5 Pro Preview 06-05 outperforms in 2 benchmarks (GPQA, Humanity's Last Exam), while GPT OSS 120B is better at 0 benchmarks.

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

Mon Jul 27 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

GPT OSS 120B costs less

For input processing, Gemini 2.5 Pro Preview 06-05 ($1.25/1M tokens) is 13.9x more expensive than GPT OSS 120B ($0.09/1M tokens).

For output processing, Gemini 2.5 Pro Preview 06-05 ($10.00/1M tokens) is 22.2x more expensive than GPT OSS 120B ($0.45/1M tokens).

In conclusion, Gemini 2.5 Pro Preview 06-05 is more expensive than GPT OSS 120B.*

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

Lowest available price from all providers
Mon Jul 27 2026 • llm-stats.com
Google
Gemini 2.5 Pro Preview 06-05
Input tokens$1.25
Output tokens$10.00
Best providerGoogle
OpenAI
GPT OSS 120B
Input tokens$0.09
Output tokens$0.45
Best providerDeepinfra
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Gemini 2.5 Pro Preview 06-05 accepts 1,048,576 input tokens compared to GPT OSS 120B's 131,072 tokens. GPT OSS 120B can generate longer responses up to 131,072 tokens, while Gemini 2.5 Pro Preview 06-05 is limited to 65,535 tokens.

Google
Gemini 2.5 Pro Preview 06-05
Input1,048,576 tokens
Output65,535 tokens
OpenAI
GPT OSS 120B
Input131,072 tokens
Output131,072 tokens
Mon Jul 27 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Gemini 2.5 Pro Preview 06-05 supports multimodal inputs, whereas GPT OSS 120B does not.

Gemini 2.5 Pro Preview 06-05 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Gemini 2.5 Pro Preview 06-05

Text
Images
Audio
Video

GPT OSS 120B

Text
Images
Audio
Video

License

Usage and distribution terms

Gemini 2.5 Pro Preview 06-05 is licensed under a proprietary license, while GPT OSS 120B uses Apache 2.0.

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

Gemini 2.5 Pro Preview 06-05

Proprietary

Closed source

GPT OSS 120B

Apache 2.0

Open weights

Release Timeline

When each model was launched

Gemini 2.5 Pro Preview 06-05 was released on 2025-06-05, while GPT OSS 120B was released on 2025-08-05.

GPT OSS 120B is 2 months newer than Gemini 2.5 Pro Preview 06-05.

Gemini 2.5 Pro Preview 06-05

Jun 5, 2025

1.1 years ago

GPT OSS 120B

Aug 5, 2025

11 months ago

2mo newer

Knowledge Cutoff

When training data ends

Gemini 2.5 Pro Preview 06-05 has a documented knowledge cutoff of 2025-01-31, while GPT OSS 120B's cutoff date is not specified.

We can confirm Gemini 2.5 Pro Preview 06-05's training data extends to 2025-01-31, but cannot make a direct comparison without GPT OSS 120B's cutoff date.

Gemini 2.5 Pro Preview 06-05

Jan 2025

GPT OSS 120B

—

Provider Availability

Gemini 2.5 Pro Preview 06-05 is available from Google. GPT OSS 120B is available from DeepInfra, Novita, OpenAI, Fireworks, Groq.

Gemini 2.5 Pro Preview 06-05

google logo
Google
Input Price:Input: $1.25/1MOutput Price:Output: $10.00/1M

GPT OSS 120B

deepinfra logo
Deepinfra
Input Price:Input: $0.09/1MOutput Price:Output: $0.45/1M
novita logo
Novita
Input Price:Input: $0.10/1MOutput Price:Output: $0.50/1M
openai logo
OpenAI
Input Price:Input: $0.10/1MOutput Price:Output: $0.50/1M
fireworks logo
Fireworks
Input Price:Input: $0.15/1MOutput Price:Output: $0.60/1M
groq logo
Groq
Input Price:Input: $0.15/1MOutput Price:Output: $0.60/1M
* 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)
Supports multimodal inputs
Higher GPQA score (86.4% vs 80.1%)
Higher Humanity's Last Exam score (21.6% vs 14.9%)
OpenAI
Less expensive input tokens
Less expensive output tokens
Has open weights

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Gemini 2.5 Pro Preview 06-05 and GPT OSS 120B side-by-side, then vote on the output you prefer.

Gemini 2.5 Pro Preview 06-05
✓ Preferred
GPT OSS 120B
Open in Playground
AI Model Comparison Table
Feature
Google
Gemini 2.5 Pro Preview 06-05
OpenAI
GPT OSS 120B

FAQ

Common questions about Gemini 2.5 Pro Preview 06-05 vs GPT OSS 120B.

Which is better, Gemini 2.5 Pro Preview 06-05 or GPT OSS 120B?

Gemini 2.5 Pro Preview 06-05 significantly outperforms across most benchmarks. Gemini 2.5 Pro Preview 06-05 is made by Google and GPT OSS 120B is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Gemini 2.5 Pro Preview 06-05 compare to GPT OSS 120B in benchmarks?

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%. GPT OSS 120B scores MMLU: 90.0%, CodeForces: 82.1%, GPQA: 80.1%, TAU-bench Retail: 67.8%, HealthBench: 57.6%.

Is Gemini 2.5 Pro Preview 06-05 cheaper than GPT OSS 120B?

GPT OSS 120B is 13.9x cheaper for input tokens. Gemini 2.5 Pro Preview 06-05 costs $1.25/M input and $10.00/M output via google. GPT OSS 120B costs $0.09/M input and $0.45/M output via deepinfra.

What are the context window sizes for Gemini 2.5 Pro Preview 06-05 and GPT OSS 120B?

Gemini 2.5 Pro Preview 06-05 supports 1.0M tokens and GPT OSS 120B supports 131K 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 Pro Preview 06-05 and GPT OSS 120B?

Key differences include context window (1.0M vs 131K), input pricing ($1.25 vs $0.09/M), multimodal support (yes vs no), licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 2.5 Pro Preview 06-05 and GPT OSS 120B?

Gemini 2.5 Pro Preview 06-05 is developed by Google and GPT OSS 120B is developed by OpenAI.

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