XA

Grok 4.1 Fast

by xAI

Tracked text vision API Available

Tracked release

This page is live so the release is discoverable quickly, but it is not treated as a fully evaluated ranked model yet. Pricing, context, availability, and source notes may already be present while benchmark and quality coverage are still being collected.

Input Price

$0.200

per 1M tokens

Output Price

$0.500

per 1M tokens

Context Window

2M

tokens

Max Output

30K

tokens

Quality Score

86

out of 100

Value Score

2024

quality per $

Details

Provider
xAI
Released
1 Nov 2025
Speed
150 tok/s
Open Source
No
API Available
Yes
Pricing Source
openrouter.ai/api/v1/models
Price Updated
21 Apr 2026

Notes

Largest context window in industry Tracking only until benchmark coverage is available. Tracking only until benchmark coverage is available.

Price History

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

$0.42 → $0.42
↑ 0%
Date Input $/1M Output $/1M Change
22 Feb 2026 $0.200 $0.500 —
23 Feb 2026 $0.200 $0.500 0.0%
24 Feb 2026 $0.200 $0.500 0.0%
25 Feb 2026 $0.200 $0.500 0.0%
26 Feb 2026 $0.200 $0.500 0.0%
27 Feb 2026 $0.200 $0.500 0.0%
28 Feb 2026 $0.200 $0.500 0.0%
1 Mar 2026 $0.200 $0.500 0.0%
2 Mar 2026 $0.200 $0.500 0.0%
3 Mar 2026 $0.200 $0.500 0.0%
4 Mar 2026 $0.200 $0.500 0.0%
5 Mar 2026 $0.200 $0.500 0.0%
6 Mar 2026 $0.200 $0.500 0.0%
7 Mar 2026 $0.200 $0.500 0.0%
8 Mar 2026 $0.200 $0.500 0.0%
9 Mar 2026 $0.200 $0.500 0.0%
10 Mar 2026 $0.200 $0.500 0.0%
11 Mar 2026 $0.200 $0.500 0.0%
12 Mar 2026 $0.200 $0.500 0.0%
13 Mar 2026 $0.200 $0.500 0.0%
14 Mar 2026 $0.200 $0.500 0.0%
15 Mar 2026 $0.200 $0.500 0.0%
27 Mar 2026 $0.200 $0.500 0.0%
27 Mar 2026 $0.200 $0.500 0.0%
28 Mar 2026 $0.200 $0.500 0.0%
29 Mar 2026 $0.200 $0.500 0.0%
30 Mar 2026 $0.200 $0.500 0.0%
31 Mar 2026 $0.200 $0.500 0.0%
31 Mar 2026 $0.200 $0.500 0.0%
8 Apr 2026 $0.200 $0.500 0.0%
8 Apr 2026 $0.200 $0.500 0.0%
8 Apr 2026 $0.200 $0.500 0.0%
8 Apr 2026 $0.200 $0.500 0.0%
8 Apr 2026 $0.200 $0.500 0.0%
8 Apr 2026 $0.200 $0.500 0.0%
8 Apr 2026 $0.200 $0.500 0.0%
9 Apr 2026 $0.200 $0.500 0.0%
9 Apr 2026 $0.200 $0.500 0.0%
9 Apr 2026 $0.200 $0.500 0.0%
9 Apr 2026 $0.200 $0.500 0.0%
9 Apr 2026 $0.200 $0.500 0.0%
9 Apr 2026 $0.200 $0.500 0.0%
9 Apr 2026 $0.200 $0.500 0.0%
9 Apr 2026 $0.200 $0.500 0.0%
9 Apr 2026 $0.200 $0.500 0.0%
10 Apr 2026 $0.200 $0.500 0.0%
10 Apr 2026 $0.200 $0.500 0.0%
10 Apr 2026 $0.200 $0.500 0.0%
10 Apr 2026 $0.200 $0.500 0.0%
10 Apr 2026 $0.200 $0.500 0.0%
10 Apr 2026 $0.200 $0.500 0.0%
10 Apr 2026 $0.200 $0.500 0.0%
10 Apr 2026 $0.200 $0.500 0.0%
10 Apr 2026 $0.200 $0.500 0.0%
10 Apr 2026 $0.200 $0.500 0.0%
10 Apr 2026 $0.200 $0.500 0.0%
10 Apr 2026 $0.200 $0.500 0.0%
10 Apr 2026 $0.200 $0.500 0.0%
10 Apr 2026 $0.200 $0.500 0.0%
10 Apr 2026 $0.200 $0.500 0.0%
10 Apr 2026 $0.200 $0.500 0.0%
10 Apr 2026 $0.200 $0.500 0.0%
10 Apr 2026 $0.200 $0.500 0.0%
11 Apr 2026 $0.200 $0.500 0.0%
11 Apr 2026 $0.200 $0.500 0.0%
11 Apr 2026 $0.200 $0.500 0.0%
11 Apr 2026 $0.200 $0.500 0.0%
11 Apr 2026 $0.200 $0.500 0.0%
11 Apr 2026 $0.200 $0.500 0.0%
11 Apr 2026 $0.200 $0.500 0.0%
11 Apr 2026 $0.200 $0.500 0.0%
11 Apr 2026 $0.200 $0.500 0.0%
11 Apr 2026 $0.200 $0.500 0.0%
11 Apr 2026 $0.200 $0.500 0.0%
19 Apr 2026 $0.200 $0.500 0.0%
20 Apr 2026 $0.200 $0.500 0.0%
21 Apr 2026 $0.200 $0.500 0.0%
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