Grok 4 Fast (free) is cheaper than Claude Sonnet 3.6 (2022-10-22) at $0/M vs $3/M input tokens.
| Spec | Claude Sonnet 3.6 (2022-10-22) | Grok 4 Fast (free) |
|---|---|---|
| Input price | $3/M tokens | Free |
| Output price | $15/M tokens | Free |
| Context window | 200K tokens | 2.0M tokens |
| Released | Jun 2024 | Sep 2025 |
Not enough votes to call it. On the specs, Grok 4 Fast (free) has the edge: newer, bigger context window.
Grok 4 Fast (free) uses 28.1x more headings
Grok 4 Fast (free) is cheaper than Claude Sonnet 3.6 (2022-10-22) at $0/M vs $3/M input tokens.
| Spec | Claude Sonnet 3.6 (2022-10-22) | Grok 4 Fast (free) |
|---|---|---|
| Input price | $3/M tokens | Free |
| Output price | $15/M tokens | Free |
| Context window | 200K tokens | 2.0M tokens |
| Released | Jun 2024 | Sep 2025 |
Not enough votes to call it. On the specs, Grok 4 Fast (free) has the edge: newer, bigger context window.
Grok 4 Fast (free) uses 28.1x more headings