Beam 1.0 vs Claude Opus 4.5
| Spec | Beam 1.0 | Claude Opus 4.5 |
|---|---|---|
| Respan Index | 39.6 (#61) | 39.8 (#60) |
| Blended price per 1M | $0.438 | $10 |
| Context window | 1.0M | 200K |
| Input / output per 1M | $0.25 / $1 | $5 / $25 |
| Max output | 131K | 64K |
| Input | text | text, vision |
| Released | 2026-10-16 | 2025-11-24 |
Respan Index by category
Each category is scored 0 to 100, and how far ahead the winner is. Leads under a point are close to even.
| Category | Beam 1.0 | Claude Opus 4.5 |
|---|---|---|
| Coding | 17.1 Beam 1.0 | 19.0 Claude Opus 4.5 |
| Agents | 56.7 Beam 1.0 | 53.9 Claude Opus 4.5 |
| Reasoning | 39.4 Beam 1.0 | 36.1 Claude Opus 4.5 |
| Knowledge & language | 35.4* Beam 1.0 | 45.5 Claude Opus 4.5 |
| Human preference | 51.6 Beam 1.0 | 53.2 Claude Opus 4.5 |
* Estimated: no published scores in that category. How the Respan Index works
Benchmarks both report
They split the 4 benchmarks both report evenly. Higher is better. Each score links to where it was published.
FAQ
Is Beam 1.0 better than Claude Opus 4.5?
Claude Opus 4.5 scores 39.8 on the Respan Index (#60), ahead of Beam 1.0 at 39.6 (#61). They split the 4 benchmarks both report evenly.
Which is cheaper, Beam 1.0 or Claude Opus 4.5?
Beam 1.0 lists at $0.25 input and $1 output per 1M tokens; Claude Opus 4.5 at $5 and $25. Beam 1.0 is 23x cheaper per token at list price.
Which has the larger context window?
Beam 1.0 accepts 1.0M tokens and Claude Opus 4.5 200K tokens.