Models

Grok 4.1 Fast (reasoning) vs Qwen3.8 Max Preview

Compare Grok 4.1 Fast (reasoning) from Grok and Qwen3.8 Max Preview from Qwen on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.

GrokGrok 4.1 Fast (reasoning)QwenQwen3.8 Max Preview
Grok logo
Grok 4.1 Fast (reasoning)
Grok · text, image → text

Grok 4.1 is a new conversational model with significant improvements in real-world usability, delivering exceptional performance in creative, emotional, and collaborative interactions. It is more perceptive to nuanced user intent, more engaging to converse with, and more coherent in personality, while fully preserving its core intelligence and reliability. Built on large-scale reinforcement learning infrastructure, the model is optimized for style, personality, helpfulness, and alignment, and leverages frontier agentic reasoning models as reward evaluators to autonomously assess and iterate on responses at scale, significantly enhancing overall interaction quality.

Input$0.2 /M
Output$0.5 /M
Cache read$0.05 /M
Qwen logo
Qwen3.8 Max Preview
Qwen · text, image → text

Qwen 3.8 Max Preview(Qwen3.8-Max-Preview) is the latest-generation foundation model in the Qwen family, packing 2.4T parameters and still evolving. Compared with the previous flagship Qwen 3.7 Max, it delivers major gains in core capabilities like Coding and Cowork (professional productivity), with world-leading performance on complex, long-horizon tasks such as full-stack development, data analysis, and Office workflows. Launch offer: Credits are consumed at just 20% of the standard rate, effectively 5× your usage. Limited time only.

Input$0.338 /M
Output$1.014 /M
Cache read$0.0338 /M

Pricing & Specifications

Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.

Grok 4.1 Fast (reasoning)
Qwen3.8 Max Preview
Input /M
$0.2
$0.338
Output /M
$0.5
$1.014
Cache read /M
$0.05
$0.0338
Context length
2,000,000
983,616
Max output
2,000,000
131,072
Time to First Token
2.8 s
2.4 s
Throughput
75.9 tok/s
48.1 tok/s
Modalities
textimage
textimage
Supported Parameters
thinkingtoolsfunction callingstructured outputs
toolsfunction callingstructured outputsweblong contextthinking
API Formats
Released
-
-

Promotional prices show the discounted rate; see each model page for promotion windows.

Activity Past 30 Days

Daily traffic served through AIHubMix — how demand for each model is trending.

grok-4-1-fast-reasoningqwen3.8-max-preview

Tokens / day

-

Requests / day

-

Performance Past 3 Days

Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.

grok-4-1-fast-reasoningqwen3.8-max-preview

Throughput (tok/s)

-

TTFT (s)

-

Uptime (%)

-

LMArena Benchmarks

LMArena ratings by capability (Bradley-Terry, commonly called Elo). Higher is better.

Text
grok-4-1-fast-reasoningqwen3.8-max-preview
1380144015001560
Overall
14301480
Coding
14611520
Math
14171497
Hard prompts
14411502
Instruction following
14021477
Multi-turn
14141493
Creative writing
14151466
Longer query
14221492
Chinese
14641536
English
14421488
Vision
grok-4-1-fast-reasoningqwen3.8-max-preview
1140120012601320
Overall
11951300
OCR
11921315
Diagram
12141326
Homework
11701334
WebDev Arena
grok-4-1-fast-reasoningqwen3.8-max-preview
12001340148016201760
Overall
12401670
React
12211679
HTML
12521628
Gaming
12401735
Simulations
12431667
Data analytics
12351615

Source: LMArena (arena.ai) leaderboard, imported by AIHubMix. Models without published ratings are omitted per chart.

Cost calculator

Estimate your monthly bill for the same workload on each model.

Grok 4.1 Fast (reasoning)
$19.50 /mo
Qwen3.8 Max Preview
$35.49 /mo

Monthly = daily × 30. Discounted rates applied where a promotion is active.

FAQ

Which is cheaper: Grok 4.1 Fast (reasoning), Qwen3.8 Max Preview?

Grok 4.1 Fast (reasoning): $0.5/M output tokens; Qwen3.8 Max Preview: $1.014/M. Use the cost calculator above to estimate your own workload.

How do their coding arena scores compare?

Qwen3.8 Max Preview: 1520; Grok 4.1 Fast (reasoning): 1461 (LMArena coding leaderboard).

Which responds faster?

Qwen3.8 Max Preview: 2.4s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.

How large is each context window?

Grok 4.1 Fast (reasoning) accepts 2,000,000 and Qwen3.8 Max Preview accepts 983,616 input tokens. Maximum output per request is 2,000,000 tokens on Grok 4.1 Fast (reasoning) and 131,072 tokens on Qwen3.8 Max Preview.

Which one generates tokens faster?

Grok 4.1 Fast (reasoning) at 75.9 tok/s and Qwen3.8 Max Preview at 48.1 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.

What inputs and capabilities does each model support?

Grok 4.1 Fast (reasoning) accepts text and image input and supports thinking, tool calling, function calling and structured outputs; Qwen3.8 Max Preview accepts text and image input and supports tool calling, function calling, structured outputs, web search, long context and thinking.

Can I call Grok 4.1 Fast (reasoning) and Qwen3.8 Max Preview with the same API key?

Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.

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