Grok 4 Fast (free) is cheaper than GPT-3.5 Turbo at $0/M vs $1.5/M input tokens.
| Spec | GPT-3.5 Turbo | Grok 4 Fast (free) |
|---|---|---|
| Input price | $1.5/M tokens | Free |
| Output price | $2/M tokens | Free |
| Context window | 16K tokens | 2.0M tokens |
| Released | Mar 2022 | Sep 2025 |
Not enough votes to call it. On the specs, Grok 4 Fast (free) has the edge: bigger model tier, newer, bigger context window.
Grok 4 Fast (free) uses 138.0x more bold
Grok 4 Fast (free) is cheaper than GPT-3.5 Turbo at $0/M vs $1.5/M input tokens.
| Spec | GPT-3.5 Turbo | Grok 4 Fast (free) |
|---|---|---|
| Input price | $1.5/M tokens | Free |
| Output price | $2/M tokens | Free |
| Context window | 16K tokens | 2.0M tokens |
| Released | Mar 2022 | Sep 2025 |
Not enough votes to call it. On the specs, Grok 4 Fast (free) has the edge: bigger model tier, newer, bigger context window.
Grok 4 Fast (free) uses 138.0x more bold