$ diff claude-opus-5-5 laguna-s-2-1
Claude Opus 5.5 vs Laguna S 2.1
Values come from Claude Opus 5.5 and Laguna S 2.1, where each is cited to its source. This page states no benchmark result and ranks neither model — it puts two published specifications next to each other. Where a lab has not published a figure, the row says so rather than guessing.
AnthropicClaude Opus 5.5
- context
- 1M
- weights
- closed
- $/M in
- $4
- $/M out
- $20
- context
- 1M
- weights
- open
- $/M in
- —
- $/M out
- —
What actually differs
- Context window
- Identical — both accept 1M tokens, so context length is not a reason to pick either.
- Weights
- Laguna S 2.1 publishes weights (OpenMDW-1.1 (open-weight)); Claude Opus 5.5 is API-only. That decides self-hosting, air-gapped deployment and fine-tuning before any capability question does.
- Recency
- Claude Opus 5.5 shipped 63 days after Laguna S 2.1 (2026-09-22 vs 2026-07-21).
Full spec
| Attribute | Claude Opus 5.5 | Laguna S 2.1 |
|---|---|---|
| Developer | Anthropic | Poolside |
| Released | 2026-09-22 | 2026-07-21 |
| Context window | 1M tokens | 1M |
| Pricing | $4/M input · $20/M output · cache reads $0.20/M · cache writes $5/M | not recorded |
| License | proprietary (API-only; no weight release) | OpenMDW-1.1 (open-weight) |
| Availability | Claude apps, Claude Code, Claude API as `claude-opus-5-5`, Amazon Bedrock, Google Cloud Vertex AI, Microsoft Foundry | Hugging Face |