DeepSeek-V4.1-Flash-1017 vs Grok-4 Fast Non-Reasoning
Comparing DeepSeek-V4.1-Flash-1017 and Grok-4 Fast Non-Reasoning across benchmarks, pricing, and capabilities.
DeepSeek · xAI · Updated for 2026
Which is better?
DeepSeek-V4.1-Flash-1017 and Grok-4 Fast Non-Reasoning trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.
On price, Grok-4 Fast Non-Reasoning is roughly 1.9x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Grok-4 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 DeepSeek-V4.1-Flash-1017
- you want the most recent training data — it shipped Oct 2026
- you need open weights you can self-host or fine-tune
Choose Grok-4 Fast Non-Reasoning
- cost matters — it's about 1.9x cheaper per token
- you process long inputs — it offers a 2,000,000 token context window
At a glance
The differences that matter most.
Individual benchmarks
11 reported for DeepSeek-V4.1-Flash-1017 · 0 for Grok-4 Fast Non-Reasoning
DeepSeek-V4.1-Flash-1017 and Grok-4 Fast Non-Reasoningdon'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, DeepSeek-V4.1-Flash-1017 ($0.30/1M tokens) is 1.5x more expensive than Grok-4 Fast Non-Reasoning ($0.20/1M tokens).
For output processing, DeepSeek-V4.1-Flash-1017 ($1.20/1M tokens) is 2.4x more expensive than Grok-4 Fast Non-Reasoning ($0.50/1M tokens).
In conclusion, DeepSeek-V4.1-Flash-1017 is more expensive than Grok-4 Fast Non-Reasoning.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Grok-4 Fast Non-Reasoning accepts 2,000,000 input tokens compared to DeepSeek-V4.1-Flash-1017's 1,048,576 tokens. DeepSeek-V4.1-Flash-1017 can generate longer responses up to 393,216 tokens, while Grok-4 Fast Non-Reasoning is limited to 30,000 tokens.
Input capabilities
Documented input modalities across available providers
Both DeepSeek-V4.1-Flash-1017 and Grok-4 Fast Non-Reasoning support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
DeepSeek-V4.1-Flash-1017
Grok-4 Fast Non-Reasoning
License
Usage and distribution terms
DeepSeek-V4.1-Flash-1017 is licensed under MIT, while Grok-4 Fast Non-Reasoning uses a proprietary license.
License differences may affect how you can use these models in commercial or open-source projects.
MIT
Open weights
Proprietary
Closed source
Release Timeline
When each model was launched
DeepSeek-V4.1-Flash-1017 was released on 2026-10-17, while Grok-4 Fast Non-Reasoning was released on 2025-08-28.
DeepSeek-V4.1-Flash-1017 is 14 months newer than Grok-4 Fast Non-Reasoning.
Oct 17, 2026
3 days ago
1.1yr newerAug 28, 2025
1.1 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
DeepSeek-V4.1-Flash-1017 is available from DeepSeek. Grok-4 Fast Non-Reasoning is available from xAI.
DeepSeek-V4.1-Flash-1017
Grok-4 Fast Non-Reasoning
Outputs Comparison
Judge for yourself.
Run your own prompts against DeepSeek-V4.1-Flash-1017 and Grok-4 Fast Non-Reasoning side-by-side, then vote on the output you prefer.
FAQ
Common questions about DeepSeek-V4.1-Flash-1017 vs Grok-4 Fast Non-Reasoning.