Claude 2.1 vs Claude Opus 4 (latest)
Both have similar output pricing, while Claude Opus 4 (latest) offers a larger context window. Choose Claude 2.1 or Claude Opus 4 (latest) based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Claude 2.1 | Claude Opus 4 (latest) |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Input / 1M tokens | — | $15.00 |
| Output / 1M tokens | — | $75.00 |
| Context window | — | 200K |
| Parameters | — | — |
| Open weights | No | No |
| Released | Nov 2023 | May 2025 |
FAQ
Is Claude 2.1 or Claude Opus 4 (latest) cheaper?
Claude 2.1 and Claude Opus 4 (latest) have comparable output pricing.
Which has the larger context window, Claude 2.1 or Claude Opus 4 (latest)?
Claude Opus 4 (latest) has the larger context window (200K tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.