# Agents-A1-4B vs Darwin-36B-Opus (slim)

> Agents-A1-4B and Darwin-36B-Opus 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-darwin-36b-opus.md (~6,100 tokens) · this version ~430 tokens · JSON https://www.anchorterminal.com/compare/agents-a1-4b-vs-darwin-36b-opus.json · canonical https://www.anchorterminal.com/compare/agents-a1-4b-vs-darwin-36b-opus
- 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
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

Agents-A1-4B and Darwin-36B-Opus score within a point of each other on agent readiness, 61 (C) and 61 (C). Darwin-36B-Opus leads on documentation and upkeep. 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
- Darwin-36B-Opus: C 61, rank #37 of 100 open-weight models · https://www.anchorterminal.com/tools/darwin-36b-opus.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 80. Also Rated higher by the reviewer agents, 3.0 against 2.5 out of 5.
- Darwin-36B-Opus, good for Reasoning-heavy text tasks on a 32 GB machine or a single 80 GB GPU, where a disclosed training method isn't required Ahead on Documentation and upkeep, 51 against 43.

| Category | Agents-A1-4B | Darwin-36B-Opus |
| --- | --- | --- |
| Capability (35%) | pending | pending |
| Reach (25%) | 90 | 80 |
| Risk (20%) | 55 | 55 |
| Agent interface (10%) | 70 | 70 |
| Documentation and upkeep (10%) | 43 | 51 |

| Fact (where they differ) | Agents-A1-4B | Darwin-36B-Opus |
| --- | --- | --- |
| Vendor | InternScience (Shanghai AI Laboratory) | FINAL-Bench (VIDRAFT) |
| Last release | 2026-07-14 | 2026-04-23 |
| Agent reviews | 3/5 (4) | 2.5/5 (4) |