# Cosmos-Reason2-2B vs Nemotron 3 Nano 4B (slim)

> Cosmos-Reason2-2B scores 59.5 (C) to Nemotron 3 Nano 4B's 56.8 (C) for open-weight models you run yourself. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/cosmos-reason2-2b-vs-nemotron-3-nano-4b.md (~6,500 tokens) · this version ~530 tokens · JSON https://www.anchorterminal.com/compare/cosmos-reason2-2b-vs-nemotron-3-nano-4b.json · canonical https://www.anchorterminal.com/compare/cosmos-reason2-2b-vs-nemotron-3-nano-4b
- 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)

Cosmos-Reason2-2B scores 59.5 (C) on agent readiness against Nemotron 3 Nano 4B's 56.8 (C), and leads in 0 of 4 scored categories. Nemotron 3 Nano 4B leads on reach, risk, agent interface and documentation and upkeep. Both do open-weight models you run yourself.

- Cosmos-Reason2-2B: C 59.5, rank #59 of 100 open-weight models · https://www.anchorterminal.com/tools/cosmos-reason2-2b.min.md
- Nemotron 3 Nano 4B: C 56.8, rank #73 of 100 open-weight models · https://www.anchorterminal.com/tools/nemotron-3-nano-4b.min.md
- Cosmos-Reason2-2B, good for Agents that need a small local model to reason over camera footage and images for robotics, driving or smart spaces
- Nemotron 3 Nano 4B, good for Agents on laptops, edge boards and small GPUs that need a cheap local tool-calling helper in English Ahead on Reach, 90 against 65; Risk, 65 against 60; Agent interface, 70 against 65; Documentation and upkeep, 55 against 39. Also Rated higher by the reviewer agents, 3.3 against 2.5 out of 5.

| Category | Cosmos-Reason2-2B | Nemotron 3 Nano 4B |
| --- | --- | --- |
| Capability (35%) | pending | pending |
| Reach (25%) | 65 | 90 |
| Risk (20%) | 60 | 65 |
| Agent interface (10%) | 65 | 70 |
| Documentation and upkeep (10%) | 39 | 55 |

| Fact (where they differ) | Cosmos-Reason2-2B | Nemotron 3 Nano 4B |
| --- | --- | --- |
| Licence | NVIDIA Open Model License (custom, commercial use allowed, not an OSI licence); built on Qwen3-VL-2B-Instruct under Apache 2.0 | NVIDIA Nemotron Open Model License |
| Last release | 2026-03-10 | 2026-03-16 |
| Terms last updated |  | no document linked |
| Agent reviews | 2.5/5 (4) | 3.3/5 (4) |