Grok-4 Fast Non-Reasoning vs Inkling 2 Small
Comparing Grok-4 Fast Non-Reasoning and Inkling 2 Small across benchmarks, pricing, and capabilities.
xAI · Thinking Machines Lab · Updated for 2026
Which is better?
Grok-4 Fast Non-Reasoning and Inkling 2 Small trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.
On price, Grok-4 Fast Non-Reasoning is roughly 1.7x 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 Grok-4 Fast Non-Reasoning
- cost matters — it's about 1.7x cheaper per token
- you process long inputs — it offers a 2,000,000 token context window
Choose Inkling 2 Small
- you want the most recent training data — it shipped Nov 2026
At a glance
The differences that matter most.
Individual benchmarks
0 reported for Grok-4 Fast Non-Reasoning · 11 for Inkling 2 Small
Grok-4 Fast Non-Reasoning and Inkling 2 Smalldon'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 Fast Non-Reasoning ($0.20/1M tokens) is 1.5x cheaper than Inkling 2 Small ($0.30/1M tokens).
For output processing, Grok-4 Fast Non-Reasoning ($0.50/1M tokens) is 2.0x cheaper than Inkling 2 Small ($1.00/1M tokens).
In conclusion, Inkling 2 Small 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 Inkling 2 Small's 256,000 tokens. Only Grok-4 Fast Non-Reasoning specifies output context (30,000 tokens).
Input capabilities
Documented input modalities across available providers
Both Grok-4 Fast Non-Reasoning and Inkling 2 Small support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Grok-4 Fast Non-Reasoning
Inkling 2 Small
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 Fast Non-Reasoning was released on 2025-08-28, while Inkling 2 Small was released on 2026-11-05.
Inkling 2 Small is 14 months newer than Grok-4 Fast Non-Reasoning.
Aug 28, 2025
1.2 years ago
Nov 5, 2026
3 days ago
1.2yr newerKnowledge 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 Fast Non-Reasoning is available from xAI. Inkling 2 Small is available from Thinking Machines Lab.
Grok-4 Fast Non-Reasoning
Inkling 2 Small
Outputs Comparison
Judge for yourself.
Run your own prompts against Grok-4 Fast Non-Reasoning and Inkling 2 Small side-by-side, then vote on the output you prefer.
FAQ
Common questions about Grok-4 Fast Non-Reasoning vs Inkling 2 Small.