AI model comparison

Mistral Large 4 vs Grok 4.5

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

Mistral Large 4 is a frontier multimodal (text and image input) model from Mistral AI built for reasoning, coding, and agentic workloads.

Input / 1M
$0.68
Output / 1M
$2.09
Context
1.05M

Grok 4.5 is a model from SpaceXAI with frontier performance on coding, knowledge work, and STEM.

Input / 1M
$2
Output / 1M
$6
Context
500K

Comparing image generators? Compare image models

At a glance

Quick verdict

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

Lower price

mistralai logo

Mistral Large 4

2.9x cheaper for a typical chat

Higher intelligence score

x-ai logo

Grok 4.5

38.8 vs 38.4 on Artificial Analysis

Larger context window

mistralai logo

Mistral Large 4

1.05M vs 500K tokens

Newer release

mistralai logo

Mistral Large 4

Released October 6, 2026

Benchmarks

Benchmark scores

Independent scores from Artificial Analysis. Higher is better.

Intelligence index

mistralai logoMistral Large 438.4
x-ai logoGrok 4.538.8

Coding index

mistralai logoMistral Large 4Not available
x-ai logoGrok 4.572.4

Agentic index

mistralai logoMistral Large 4Not available
x-ai logoGrok 4.541.2

Pricing

Mistral Large 4 vs Grok 4.5 API pricing

Per-token API rates. Cheaper option highlighted.

Metricmistralai logoMistral Large 4x-ai logoGrok 4.5
Input tokensPer 1M tokens$0.68$2
Output tokensPer 1M tokens$2.09$6
Cached input (read)Per 1M tokens$0.07$0.30
Cache writePer 1M tokensNot availableNot available
Long-context pricingPer 1M tokens, for very long promptsSame rate at any length$4 in / $12 out above 200K
Web searchPer requestNot available$0.005

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

mistralai logoMistral Large 4$2.40
x-ai logoGrok 4.5$7

Coding task

30K in, 4K out

mistralai logoMistral Large 4$28.76$10.46 cached
x-ai logoGrok 4.5$84$33 cached

Long document summary

150K in, 2K out

mistralai logoMistral Large 4$106.18$14.68 cached
x-ai logoGrok 4.5$312$57 cached

Specs

Context window and capabilities

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

Metricmistralai logoMistral Large 4x-ai logoGrok 4.5
Context window1.05M tokens500K tokens
Max output262K tokens450K tokens
Input typesImage, TextFile, Image, Text
Output typesTextText
Reasoning effort levelsHigh, NoneHigh, Medium, Low
Default reasoning effortHighHigh
Release dateOctober 6, 2026July 8, 2026

Features

Supported features

API features available for each model.

Metricmistralai logoMistral Large 4x-ai logoGrok 4.5
Tool callingSupportedSupported
Structured outputsSupportedSupported
JSON modeSupportedSupported
ReasoningSupportedSupported
TemperatureSupportedSupported
Stop sequencesSupportedNot supported
Deterministic seedSupportedSupported
Verbosity controlNot supportedNot supported

Our take

Mistral Large 4 is 2.9x cheaper for a typical chat. Grok 4.5 scores higher on the Artificial Analysis Intelligence Index (38.8 vs 38.4). Mistral Large 4 has the larger context window (1.05M vs 500K 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 Mistral Large 4 or Grok 4.5 cheaper?

Mistral Large 4 is cheaper for a typical chat (2K input tokens and 500 output tokens). Mistral Large 4 costs $0.68 per 1M input tokens and $2.09 per 1M output tokens, while Grok 4.5 costs $2 per 1M input tokens and $6 per 1M output tokens.

Which has a bigger context window, Mistral Large 4 or Grok 4.5?

Mistral Large 4 supports up to 1.05M tokens of context, compared with 500K for Grok 4.5.

Is Mistral Large 4 smarter than Grok 4.5?

On the Artificial Analysis Intelligence Index, Mistral Large 4 scores 38.4 and Grok 4.5 scores 38.8, putting Grok 4.5 ahead. Benchmarks don't capture everything, so the best test is running your own prompts through both.

Can I use Mistral Large 4 and Grok 4.5 at the same time?

Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see Mistral Large 4 and Grok 4.5 answer side by side and keep the better response.

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Why choose? Ask both.

Send one prompt to Mistral Large 4 and Grok 4.5 at the same time. Compare the answers side by side and keep the best one.