AI model comparison

Grok 4.3 vs Qwen3.5-27B

Pricing, context window, benchmarks, and features compared side by side. Or skip the guesswork and send one prompt to both.

Grok 4.3 is a reasoning model from SpaceXAI.

Input / 1M
$1.25
Output / 1M
$2.50
Context
1M

The Qwen3.5 27B native vision-language Dense model incorporates a linear attention mechanism, delivering fast response times while balancing inference speed and performance.

Input / 1M
$0.26
Output / 1M
$2.60
Context
262K

At a glance

Quick verdict

How the two models stack up on the things people ask about most.

Lower price

qwen logo

Qwen3.5-27B

2.1x cheaper for a typical chat

Higher intelligence score

x-ai logo

Grok 4.3

24.9 vs 22.9 on Artificial Analysis

Larger context window

x-ai logo

Grok 4.3

1M vs 262K tokens

Newer release

x-ai logo

Grok 4.3

Released April 30, 2026

Benchmarks

Benchmark scores

Independent scores from Artificial Analysis. Higher is better.

Intelligence index

x-ai logoGrok 4.324.9
qwen logoQwen3.5-27B22.9

Coding index

x-ai logoGrok 4.342.2
qwen logoQwen3.5-27BNot available

Agentic index

x-ai logoGrok 4.315.5
qwen logoQwen3.5-27BNot available

Pricing

Grok 4.3 vs Qwen3.5-27B API pricing

Per-token API rates. Cheaper option highlighted.

Metricx-ai logoGrok 4.3qwen logoQwen3.5-27B
Input tokensPer 1M tokens$1.25$0.26
Output tokensPer 1M tokens$2.50$2.60
Cached input (read)Per 1M tokens$0.20Not available
Cache writePer 1M tokensNot availableNot available
Long-context pricingPer 1M tokens, for very long prompts$2.50 in / $5 out above 200KSame rate at any length
Web searchPer request$0.005Not available

What it costs in practice

Estimated cost per 1,000 requests at standard rates. Coding and long-document figures also show the cost when the input is already cached.

Chat message

2K in, 500 out

x-ai logoGrok 4.3$3.75
qwen logoQwen3.5-27B$1.82

Coding task

30K in, 4K out

x-ai logoGrok 4.3$47.50$16 cached
qwen logoQwen3.5-27B$18.20

Long document summary

150K in, 2K out

x-ai logoGrok 4.3$192.50$35 cached
qwen logoQwen3.5-27B$44.20

Specs

Context window and capabilities

How much each model can read, how much it can write, and what it accepts as input.

Metricx-ai logoGrok 4.3qwen logoQwen3.5-27B
Context window1M tokens262K tokens
Max output900K tokens82K tokens
Input typesFile, Image, TextImage, Text, Video
Output typesTextText
Reasoning effort levelsHigh, Medium, Low, NoneNot available
Default reasoning effortLowNot available
Release dateApril 30, 2026February 25, 2026

Features

Supported features

API features available for each model.

Metricx-ai logoGrok 4.3qwen logoQwen3.5-27B
Tool callingSupportedSupported
Structured outputsSupportedSupported
JSON modeSupportedSupported
ReasoningSupportedSupported
TemperatureSupportedSupported
Stop sequencesNot supportedSupported
Deterministic seedSupportedSupported
Verbosity controlNot supportedNot supported

Our take

Qwen3.5-27B is 2.1x cheaper for a typical chat. Grok 4.3 scores higher on the Artificial Analysis Intelligence Index (24.9 vs 22.9). Grok 4.3 has the larger context window (1M vs 262K tokens). The right pick depends on your workload, so the quickest way to settle it is to send the same prompt to both and compare.

FAQ

Frequently asked questions

Is Grok 4.3 or Qwen3.5-27B cheaper?

Qwen3.5-27B is cheaper for a typical chat (2K input tokens and 500 output tokens). Qwen3.5-27B costs $0.26 per 1M input tokens and $2.60 per 1M output tokens, while Grok 4.3 costs $1.25 per 1M input tokens and $2.50 per 1M output tokens.

Which has a bigger context window, Grok 4.3 or Qwen3.5-27B?

Grok 4.3 supports up to 1M tokens of context, compared with 262K for Qwen3.5-27B.

Is Grok 4.3 smarter than Qwen3.5-27B?

On the Artificial Analysis Intelligence Index, Grok 4.3 scores 24.9 and Qwen3.5-27B scores 22.9, putting Grok 4.3 ahead. Benchmarks don't capture everything, so the best test is running your own prompts through both.

Can I use Grok 4.3 and Qwen3.5-27B at the same time?

Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see Grok 4.3 and Qwen3.5-27B answer side by side and keep the better response.

x-ai logoqwen logo

Why choose? Ask both.

Send one prompt to Grok 4.3 and Qwen3.5-27B at the same time. Compare the answers side by side and keep the best one.