PriceIndex

AI model rankings · All models

AI Models with the Longest Context Window

Grok 4.20 offers the largest context window of the 317 AI models we track: 2M tokens. The list spans 37 providers. The lowest-cost option is Mistral Nemo ($0.02 blended per 1M tokens) and the longest context is Grok 4.20 (2M).

Updated October 2026 · 317 models · 36 providers · prices per 1M tokens

Top 3 AI Models

  1. #1xAI

    Grok 4.20

    2M

    Context window

    Input
    $1.25
    Context
    2M
  2. #2xAI

    Grok 4.20 Multi-Agent

    2M

    Context window

    Input
    $1.25
    Context
    2M
  3. #3Meta

    Llama 4 Scout

    1.3M

    Context window

    Input
    $0.1
    Context
    1.3M

AI Models Ranking

317 of 317
Input /1M
$1.25
Output /1M
$2.5
Context
2M
AA Intelligence
25.7
DesignArena Elo
—
Arena Elo
—
MMLU-Pro
—
Blended
$1.56
Trend
0%
Input /1M
$1.25
Output /1M
$2.5
Context
2M
AA Intelligence
—
DesignArena Elo
—
Arena Elo
—
MMLU-Pro
—
Blended
$1.56
Trend
0%
Input /1M
$0.1
Output /1M
$0.3
Context
1.3M
AA Intelligence
8.1
DesignArena Elo
793
Arena Elo
—
MMLU-Pro
—
Blended
$0.15
Trend
0%
Input /1M
$2.5
Output /1M
$15
Context
1.1M
AA Intelligence
39
DesignArena Elo
—
Arena Elo
—
MMLU-Pro
—
Blended
$5.63
Trend
0%
Input /1M
$30
Output /1M
$180
Context
1.1M
AA Intelligence
—
DesignArena Elo
—
Arena Elo
—
MMLU-Pro
—
Blended
$67.50
Trend
0%
Input /1M
$5
Output /1M
$30
Context
1.1M
AA Intelligence
38.4
DesignArena Elo
1264
Arena Elo
—
MMLU-Pro
—
Blended
$11.25
Trend
0%

6 of 317

Compare the leaders

How this ranking works

Benchmark is an aggregate 0–100 quality score. Blended price assumes a 3:1 input-to-output token mix. Trend compares the latest blended price with the oldest in our 6-month history.

This page sorts by context window. Use the panel on the right to switch ranking or category — every combination has its own page.

Frequently asked questions