xAI · The Reasoning-Model Era
Grok 4
Elon's reasoning flagship. Native Twitter/X integration, willing to discuss what other models won't.
By C.W. Jameson · Published 19 May 2026 · Last reviewed 19 May 2026
Grok 4 carved out a niche by refusing less. Where Claude and ChatGPT politely decline, Grok answers. Whether that is product virtue or training-data permissiveness depends on which side of the prompt you sit on. Capability is competitive with second-tier frontier; the differentiator is policy.
Field signature
Will discuss specific living people in ways other frontier models won't.
Specifications
| Released | 2025 |
|---|---|
| Context window | 256,000 tokens |
| Pricing | $3 / $15 per million tokens |
| Modalities | text · image |
| License | Commercial API only |
| Era | The Reasoning-Model Era |
Strengths
- Permissive refusal policy
- Real-time X integration
Weaknesses
- Tool-use weaker
- Reasoning second-tier
Authentication markers
The fingerprints by which Grok 4 can be identified from its output alone.
| Tell | Meaning |
|---|---|
| Will discuss public figures with specific opinions. | Grok policy stance. |
Notable works
- X integration as a real-time backbone
Market position
$3 - $15 per million tokens
Partner offer
Partner offerings listed for operator convenience. See disclosure for terms.
View partner →Affiliate link — see disclosure.
Primary sources
- [1] xAI — Grok
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