Grok-4.1 Fast Non-Reasoning vs o1-preview
Comparing Grok-4.1 Fast Non-Reasoning and o1-preview across benchmarks, pricing, and capabilities.
xAI · OpenAI · Updated for 2026
Which is better?
Grok-4.1 Fast Non-Reasoning and o1-preview trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.
On price, Grok-4.1 Fast Non-Reasoning is roughly 95.5x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Grok-4.1 Fast Non-Reasoning also accepts a larger context window (2,000,000 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Grok-4.1 Fast Non-Reasoning
- cost matters — it's about 95.5x cheaper per token
- you process long inputs — it offers a 2,000,000 token context window
- you want the most recent training data — it shipped Nov 2025
Choose o1-preview
- you want predictable pricing at $15.00/M input and $60.00/M output
At a glance
The differences that matter most.
Individual benchmarks
0 reported for Grok-4.1 Fast Non-Reasoning · 8 for o1-preview
Grok-4.1 Fast Non-Reasoning and o1-previewdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Grok-4.1 Fast Non-Reasoning ($0.20/1M tokens) is 75.0x cheaper than o1-preview ($15.00/1M tokens).
For output processing, Grok-4.1 Fast Non-Reasoning ($0.50/1M tokens) is 120.0x cheaper than o1-preview ($60.00/1M tokens).
In conclusion, o1-preview is more expensive than Grok-4.1 Fast Non-Reasoning.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Grok-4.1 Fast Non-Reasoning accepts 2,000,000 input tokens compared to o1-preview's 128,000 tokens. o1-preview can generate longer responses up to 32,768 tokens, while Grok-4.1 Fast Non-Reasoning is limited to 30,000 tokens.
Input capabilities
Documented input modalities across available providers
Grok-4.1 Fast Non-Reasoning supports multimodal inputs, whereas o1-preview 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.
Grok-4.1 Fast Non-Reasoning
o1-preview
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
Grok-4.1 Fast Non-Reasoning was released on 2025-11-17, while o1-preview was released on 2024-09-12.
Grok-4.1 Fast Non-Reasoning is 14 months newer than o1-preview.
Nov 17, 2025
10 months ago
1.2yr newerSep 12, 2024
2.0 years ago
Knowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
Grok-4.1 Fast Non-Reasoning is available from xAI. o1-preview is available from OpenAI, Azure.
Grok-4.1 Fast Non-Reasoning
o1-preview
Outputs Comparison
Judge for yourself.
Run your own prompts against Grok-4.1 Fast Non-Reasoning and o1-preview side-by-side, then vote on the output you prefer.
FAQ
Common questions about Grok-4.1 Fast Non-Reasoning vs o1-preview.