xAI
x.ai| Model | Tier | Input | Output | Context | Released |
|---|---|---|---|---|---|
| Grok Build 0.1 | Mid | $1.00 | $2.00 | 256K | May 2026 |
| Grok 4.3 | Frontier | $1.25 | $2.50 | 1M | Apr 2026 |
| Grok 4.20 Multi-Agent | Mid | $2.00 | $6.00 | 2M | Mar 2026 |
| Grok 4.20 legacy | Frontier | $1.25 | $2.50 | 2M | Mar 2026 |
| Grok 4.1 Fast retired | Small | $0.2 | $0.5 | 2M | Nov 2025 |
| Grok 4 retired | Frontier | $3.00 | $15.00 | 256K | Jul 2025 |
| Grok 3 Mini retired | Small | $0.3 | $0.5 | 128K | Jun 2025 |
| Grok 3 retired | Frontier | $3.00 | $15.00 | 131K | Apr 2025 |
| Grok 2 retired | Frontier | $2.00 | $10.00 | 128K | Aug 2024 |