XA

Grok 4

by xAI

text vision API Available

Input Price

$3.00

per 1M tokens

Output Price

$15.00

per 1M tokens

Context Window

256K

tokens

Max Output

32.8K

tokens

Quality Score

88

out of 100

Value Score

73

quality per $

Details

Provider
xAI
Released
9 Jul 2025
Speed
50 tok/s
Time to First Token
350ms
Open Source
No
API Available
Yes
Pricing Source
openrouter.ai/api/v1/models
Price Updated
14 Apr 2026

Notes

Frontier reasoning (matches o3 quality)

Benchmark Scores

Chatbot Arena ELO

1345

Source: LMSYS (validated)

MATH-500

95

Source: xAI

Arena-Hard

89

Source: xAI

LiveBench

84

Source: xAI

GPQA Diamond

82

Source: xAI

Humanity's Last Exam

21

Source: xAI

MT-Bench

9.3

Source: xAI

Price History

Blended price trend (input + 3×output / 4)

$12.00 → $12.00
0%
Date Input $/1M Output $/1M Change
22 Feb 2026 $3.00 $15.00
23 Feb 2026 $3.00 $15.00 0.0%
24 Feb 2026 $3.00 $15.00 0.0%
25 Feb 2026 $3.00 $15.00 0.0%
26 Feb 2026 $3.00 $15.00 0.0%
27 Feb 2026 $3.00 $15.00 0.0%
28 Feb 2026 $3.00 $15.00 0.0%
1 Mar 2026 $3.00 $15.00 0.0%
2 Mar 2026 $3.00 $15.00 0.0%
3 Mar 2026 $3.00 $15.00 0.0%
4 Mar 2026 $3.00 $15.00 0.0%
5 Mar 2026 $3.00 $15.00 0.0%
6 Mar 2026 $3.00 $15.00 0.0%
7 Mar 2026 $3.00 $15.00 0.0%
8 Mar 2026 $3.00 $15.00 0.0%
9 Mar 2026 $3.00 $15.00 0.0%
10 Mar 2026 $3.00 $15.00 0.0%
11 Mar 2026 $3.00 $15.00 0.0%
12 Mar 2026 $3.00 $15.00 0.0%
13 Mar 2026 $3.00 $15.00 0.0%
14 Mar 2026 $3.00 $15.00 0.0%
15 Mar 2026 $3.00 $15.00 0.0%
27 Mar 2026 $3.00 $15.00 0.0%
27 Mar 2026 $3.00 $15.00 0.0%
28 Mar 2026 $3.00 $15.00 0.0%
29 Mar 2026 $3.00 $15.00 0.0%
30 Mar 2026 $3.00 $15.00 0.0%
31 Mar 2026 $3.00 $15.00 0.0%
31 Mar 2026 $3.00 $15.00 0.0%
8 Apr 2026 $3.00 $15.00 0.0%
8 Apr 2026 $3.00 $15.00 0.0%
8 Apr 2026 $3.00 $15.00 0.0%
8 Apr 2026 $3.00 $15.00 0.0%
8 Apr 2026 $3.00 $15.00 0.0%
8 Apr 2026 $3.00 $15.00 0.0%
8 Apr 2026 $3.00 $15.00 0.0%
9 Apr 2026 $3.00 $15.00 0.0%
9 Apr 2026 $3.00 $15.00 0.0%
9 Apr 2026 $3.00 $15.00 0.0%
9 Apr 2026 $3.00 $15.00 0.0%
9 Apr 2026 $3.00 $15.00 0.0%
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9 Apr 2026 $3.00 $15.00 0.0%
9 Apr 2026 $3.00 $15.00 0.0%
9 Apr 2026 $3.00 $15.00 0.0%
10 Apr 2026 $3.00 $15.00 0.0%
10 Apr 2026 $3.00 $15.00 0.0%
10 Apr 2026 $3.00 $15.00 0.0%
10 Apr 2026 $3.00 $15.00 0.0%
10 Apr 2026 $3.00 $15.00 0.0%
10 Apr 2026 $3.00 $15.00 0.0%
10 Apr 2026 $3.00 $15.00 0.0%
10 Apr 2026 $3.00 $15.00 0.0%
10 Apr 2026 $3.00 $15.00 0.0%
10 Apr 2026 $3.00 $15.00 0.0%
10 Apr 2026 $3.00 $15.00 0.0%
10 Apr 2026 $3.00 $15.00 0.0%
10 Apr 2026 $3.00 $15.00 0.0%
10 Apr 2026 $3.00 $15.00 0.0%
10 Apr 2026 $3.00 $15.00 0.0%
10 Apr 2026 $3.00 $15.00 0.0%
10 Apr 2026 $3.00 $15.00 0.0%
10 Apr 2026 $3.00 $15.00 0.0%
11 Apr 2026 $3.00 $15.00 0.0%
11 Apr 2026 $3.00 $15.00 0.0%
11 Apr 2026 $3.00 $15.00 0.0%
11 Apr 2026 $3.00 $15.00 0.0%
11 Apr 2026 $3.00 $15.00 0.0%
11 Apr 2026 $3.00 $15.00 0.0%
11 Apr 2026 $3.00 $15.00 0.0%
11 Apr 2026 $3.00 $15.00 0.0%
11 Apr 2026 $3.00 $15.00 0.0%
11 Apr 2026 $3.00 $15.00 0.0%
11 Apr 2026 $3.00 $15.00 0.0%
11 Apr 2026 $3.00 $15.00 0.0%
11 Apr 2026 $3.00 $15.00 0.0%
11 Apr 2026 $3.00 $15.00 0.0%
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11 Apr 2026 $3.00 $15.00 0.0%
11 Apr 2026 $3.00 $15.00 0.0%
11 Apr 2026 $3.00 $15.00 0.0%
11 Apr 2026 $3.00 $15.00 0.0%
12 Apr 2026 $3.00 $15.00 0.0%
12 Apr 2026 $3.00 $15.00 0.0%
12 Apr 2026 $3.00 $15.00 0.0%
12 Apr 2026 $3.00 $15.00 0.0%
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12 Apr 2026 $3.00 $15.00 0.0%
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12 Apr 2026 $3.00 $15.00 0.0%
12 Apr 2026 $3.00 $15.00 0.0%
12 Apr 2026 $3.00 $15.00 0.0%
12 Apr 2026 $3.00 $15.00 0.0%
12 Apr 2026 $3.00 $15.00 0.0%
12 Apr 2026 $3.00 $15.00 0.0%
13 Apr 2026 $3.00 $15.00 0.0%
13 Apr 2026 $3.00 $15.00 0.0%
13 Apr 2026 $3.00 $15.00 0.0%
13 Apr 2026 $3.00 $15.00 0.0%
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14 Apr 2026 $3.00 $15.00 0.0%
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14 Apr 2026 $3.00 $15.00 0.0%
14 Apr 2026 $3.00 $15.00 0.0%