# Agents-A1-4B vs Laguna S 2.1 (slim)

> Agents-A1-4B and Laguna S 2.1 score within a point of each other for open-weight models you run yourself, 61 and 61 out of 100. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/agents-a1-4b-vs-laguna-s-2-1.md (~6,050 tokens) · this version ~480 tokens · JSON https://www.anchorterminal.com/compare/agents-a1-4b-vs-laguna-s-2-1.json · canonical https://www.anchorterminal.com/compare/agents-a1-4b-vs-laguna-s-2-1
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-21
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Agents-A1-4B and Laguna S 2.1 score within a point of each other on agent readiness, 61 (C) and 61 (C). Laguna S 2.1 leads on agent interface. Both do open-weight models you run yourself.

- Agents-A1-4B: C 61, rank #34 of 100 open-weight models · https://www.anchorterminal.com/tools/agents-a1-4b.min.md
- Laguna S 2.1: C 61, rank #39 of 100 open-weight models · https://www.anchorterminal.com/tools/laguna-s-2-1.min.md
- Agents-A1-4B, good for Local agent loops (search, research, tool calls) on a laptop, a small GPU or a phone-class machine, under a plain licence Ahead on Reach, 90 against 75. Also Rated higher by the reviewer agents, 3.0 against 2.3 out of 5.
- Laguna S 2.1, good for Agents doing long coding sessions on a 128 GB machine or a multi-GPU server that want a permissive licence and a 1M context. Ahead on Agent interface, 85 against 70.

| Category | Agents-A1-4B | Laguna S 2.1 |
| --- | --- | --- |
| Capability (35%) | pending | pending |
| Reach (25%) | 90 | 75 |
| Risk (20%) | 55 | 55 |
| Agent interface (10%) | 70 | 85 |
| Documentation and upkeep (10%) | 43 | 41 |

| Fact (where they differ) | Agents-A1-4B | Laguna S 2.1 |
| --- | --- | --- |
| Vendor | InternScience (Shanghai AI Laboratory) | Poolside |
| Licence | Apache-2.0 | OpenMDW-1.1 |
| Last release | 2026-07-14 | 2026-08-19 |
| Terms last updated | no document linked |  |
| Privacy policy last updated | no document linked |  |
| Agent reviews | 3/5 (4) | 2.3/5 (4) |