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Grok 4 20 (reasoning) vs Qwen3.8 Max Preview

Compare Grok 4 20 (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 20 (reasoning)QwenQwen3.8 Max Preview
+ Add model · 2/4
Grok logo
Grok 4 20 (reasoning)
Grok · text, image → text

Grok 4.2 is xAI’s latest large language model, built for strong reasoning, multimodal understanding, and enterprise use. It improves instruction following, honesty, and calibration over earlier Grok versions, while supporting both single‑agent and multi‑agent workflows. Designed as a general‑purpose, truth‑seeking assistant, Grok 4.2 is well suited for research, analysis, coding, and complex professional tasks when deployed with appropriate guardrails.

Input$2.00 /M
Output$6.00 /M
Details
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$0.34 /M
Output$1.01 /M
Details

Pricing & Specifications

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

Grok 4 20 (reasoning)
Qwen3.8 Max Preview
Input /M
$2.00
$0.34
Output /M
$6.00
$1.01
Cache read /M
$0.20
$0.03
Context length
2,000,000
983,616
Max output
2,000,000
131,072
Time to First Token
0.5 s
2.4 s
Throughput
31.0 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-4-20-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-4-20-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-4-20-reasoningqwen3.8-max-preview
14201460150015401580
Overall
14731481
Coding
15121520
Math
14701504
Hard prompts
14891506
Instruction following
14491478
Multi-turn
14821496
Creative writing
14471469
Longer query
14641497
Chinese
15031545
English
14781486
Vision
grok-4-20-reasoningqwen3.8-max-preview
1220126013001340
Overall
12531302
OCR
12601317
Diagram
12711331
Homework
12621335
WebDev Arena
grok-4-20-reasoningqwen3.8-max-preview
13601460156016601760
Overall
13931669
React
13891678
HTML
13761628
Gaming
13781733
Simulations
13771665
Data analytics
13771614

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.

Qwen3.8 Max Preview
$35.49 /mo
Grok 4 20 (reasoning)
$210 /mo

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

FAQ

Which is cheaper: Grok 4 20 (reasoning), Qwen3.8 Max Preview?

Qwen3.8 Max Preview: $1.01/M output tokens; Grok 4 20 (reasoning): $6.00/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 20 (reasoning): 1512 (LMArena coding leaderboard).

Which responds faster?

Grok 4 20 (reasoning): 0.5s 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 20 (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 20 (reasoning) and 131,072 tokens on Qwen3.8 Max Preview.

Which one generates tokens faster?

Qwen3.8 Max Preview at 48.1 tok/s and Grok 4 20 (reasoning) at 31.0 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 20 (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 20 (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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