Laguna S 2.1 is the latest coding agent model from [Poolside](<https://poolside.ai/>). Laguna S 2.1 is a 118B total parameter model with 8B active parameters, scoring 70.2% on Terminal-Bench 2.1 and...
Model details →Poolside: Laguna S 2.1 vs Qwen: Qwen3.5-Flash
Poolside: Laguna S 2.1 and Qwen: Qwen3.5-Flash are evenly matched on 6 axes — pick the one whose provider, latency, or licensing fits your stack.
The Qwen3.5 native vision-language Flash models are built on a hybrid architecture that integrates a linear attention mechanism with a sparse mixture-of-experts model, achieving higher inference efficiency. Compared to the...
Model details →Side-by-side comparison
| Capability | Poolside: Laguna S 2.1 | Qwen: Qwen3.5-Flash | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 1.0M | 1M | 🏆 Poolside: Laguna S 2.1 |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $0.09 | $0.07 | 🏆 Qwen: Qwen3.5-Flash |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $0.18 | $0.26 | 🏆 Poolside: Laguna S 2.1 |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | — | Yes | 🏆 Qwen: Qwen3.5-Flash |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is Poolside: Laguna S 2.1 better than Qwen: Qwen3.5-Flash?
Poolside: Laguna S 2.1 and Qwen: Qwen3.5-Flash are evenly matched on 6 axes — pick the one whose provider, latency, or licensing fits your stack.
What's the price difference between Poolside: Laguna S 2.1 and Qwen: Qwen3.5-Flash?
Input: $0.09 vs $0.07 per 1M tokens. Output: $0.18 vs $0.26 per 1M tokens.
What context windows do Poolside: Laguna S 2.1 and Qwen: Qwen3.5-Flash support?
Poolside: Laguna S 2.1 supports up to 1.0M tokens. Qwen: Qwen3.5-Flash supports up to 1M tokens.
Do both Poolside: Laguna S 2.1 and Qwen: Qwen3.5-Flash support tool calling?
Poolside: Laguna S 2.1: yes. Qwen: Qwen3.5-Flash: yes.
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