Model Comparison

GPT OSS 120B vs Grok-4.1 Fast Non-Reasoning

Comparing GPT OSS 120B and Grok-4.1 Fast Non-Reasoning across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

GPT OSS 120B and Grok-4.1 Fast Non-Reasoning don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

GPT OSS 120B costs less

For input processing, GPT OSS 120B ($0.09/1M tokens) is 2.2x cheaper than Grok-4.1 Fast Non-Reasoning ($0.20/1M tokens).

For output processing, GPT OSS 120B ($0.45/1M tokens) is 1.1x cheaper than Grok-4.1 Fast Non-Reasoning ($0.50/1M tokens).

In conclusion, Grok-4.1 Fast Non-Reasoning is more expensive than GPT OSS 120B.*

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

Lowest available price from all providers
Wed Jun 03 2026 • llm-stats.com
OpenAI
GPT OSS 120B
Input tokens$0.09
Output tokens$0.45
Best providerDeepinfra
xAI
Grok-4.1 Fast Non-Reasoning
Input tokens$0.20
Output tokens$0.50
Best providerxAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Grok-4.1 Fast Non-Reasoning accepts 2,000,000 input tokens compared to GPT OSS 120B's 131,072 tokens. GPT OSS 120B can generate longer responses up to 131,072 tokens, while Grok-4.1 Fast Non-Reasoning is limited to 30,000 tokens.

OpenAI
GPT OSS 120B
Input131,072 tokens
Output131,072 tokens
xAI
Grok-4.1 Fast Non-Reasoning
Input2,000,000 tokens
Output30,000 tokens
Wed Jun 03 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Grok-4.1 Fast Non-Reasoning supports multimodal inputs, whereas GPT OSS 120B does not.

Grok-4.1 Fast Non-Reasoning can handle both text and other forms of data like images, making it suitable for multimodal applications.

GPT OSS 120B

Text
Images
Audio
Video

Grok-4.1 Fast Non-Reasoning

Text
Images
Audio
Video

License

Usage and distribution terms

GPT OSS 120B is licensed under Apache 2.0, while Grok-4.1 Fast Non-Reasoning uses a proprietary license.

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

GPT OSS 120B

Apache 2.0

Open weights

Grok-4.1 Fast Non-Reasoning

Proprietary

Closed source

Release Timeline

When each model was launched

GPT OSS 120B was released on 2025-08-05, while Grok-4.1 Fast Non-Reasoning was released on 2025-11-17.

Grok-4.1 Fast Non-Reasoning is 3 months newer than GPT OSS 120B.

GPT OSS 120B

Aug 5, 2025

10 months ago

Grok-4.1 Fast Non-Reasoning

Nov 17, 2025

6 months ago

3mo newer

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

GPT OSS 120B is available from DeepInfra, Novita, OpenAI, Fireworks, Groq. Grok-4.1 Fast Non-Reasoning is available from xAI.

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

Grok-4.1 Fast Non-Reasoning

xai logo
xAI
Input Price:Input: $0.20/1MOutput Price:Output: $0.50/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

OpenAI
Less expensive input tokens
Less expensive output tokens
Has open weights
xAI
Larger context window (2,000,000 tokens)
Supports multimodal inputs

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT OSS 120B
xAI
Grok-4.1 Fast Non-Reasoning

FAQ

Common questions about GPT OSS 120B vs Grok-4.1 Fast Non-Reasoning.

Which is better, GPT OSS 120B or Grok-4.1 Fast Non-Reasoning?

GPT OSS 120B (OpenAI) and Grok-4.1 Fast Non-Reasoning (xAI) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does GPT OSS 120B compare to Grok-4.1 Fast Non-Reasoning in benchmarks?

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

Is GPT OSS 120B cheaper than Grok-4.1 Fast Non-Reasoning?

GPT OSS 120B is 2.2x cheaper for input tokens. GPT OSS 120B costs $0.09/M input and $0.45/M output via deepinfra. Grok-4.1 Fast Non-Reasoning costs $0.20/M input and $0.50/M output via xai.

What are the context window sizes for GPT OSS 120B and Grok-4.1 Fast Non-Reasoning?

GPT OSS 120B supports 131K tokens and Grok-4.1 Fast Non-Reasoning supports 2.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between GPT OSS 120B and Grok-4.1 Fast Non-Reasoning?

Key differences include context window (131K vs 2.0M), input pricing ($0.09 vs $0.20/M), multimodal support (no vs yes), licensing (Apache 2.0 vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT OSS 120B and Grok-4.1 Fast Non-Reasoning?

GPT OSS 120B is developed by OpenAI and Grok-4.1 Fast Non-Reasoning is developed by xAI.