Horizon Alpha is cheaper than Claude Sonnet 4.6 at $0/M vs $3/M input tokens.
| Spec | Claude Sonnet 4.6 | Horizon Alpha |
|---|---|---|
| Input price | $3/M tokens | Free |
| Output price | $15/M tokens | Free |
| Context window | 1.0M tokens | 256K tokens |
| Released | Feb 2026 | Jul 2025 |
Not enough votes to call it. On the specs, Claude Sonnet 4.6 has the edge: newer, bigger context window, major provider backing.
Claude Sonnet 4.6 uses 507.4x more bold
Horizon Alpha is cheaper than Claude Sonnet 4.6 at $0/M vs $3/M input tokens.
| Spec | Claude Sonnet 4.6 | Horizon Alpha |
|---|---|---|
| Input price | $3/M tokens | Free |
| Output price | $15/M tokens | Free |
| Context window | 1.0M tokens | 256K tokens |
| Released | Feb 2026 | Jul 2025 |
Not enough votes to call it. On the specs, Claude Sonnet 4.6 has the edge: newer, bigger context window, major provider backing.
Claude Sonnet 4.6 uses 507.4x more bold