GPT-5.6 Luna is cheaper than Claude Sonnet 4.5 at $1/M vs $3/M input tokens.
| Spec | Claude Sonnet 4.5 | GPT-5.6 Luna |
|---|---|---|
| Input price | $3/M tokens | $1/M tokens |
| Output price | $15/M tokens | $6/M tokens |
| Context window | 200K tokens | 1.1M tokens |
| Released | Sep 2025 | Jul 2026 |
Not enough votes to call it. On the specs, nothing separates them.
GPT-5.6 Luna is cheaper on both — 3.0× input, 2.5× output
Claude Sonnet 4.5 uses 45.2x more emoji
GPT-5.6 Luna is cheaper than Claude Sonnet 4.5 at $1/M vs $3/M input tokens.
| Spec | Claude Sonnet 4.5 | GPT-5.6 Luna |
|---|---|---|
| Input price | $3/M tokens | $1/M tokens |
| Output price | $15/M tokens | $6/M tokens |
| Context window | 200K tokens | 1.1M tokens |
| Released | Sep 2025 | Jul 2026 |
Not enough votes to call it. On the specs, nothing separates them.
GPT-5.6 Luna is cheaper on both — 3.0× input, 2.5× output
Claude Sonnet 4.5 uses 45.2x more emoji