GPT-5.4 nano is the most lightweight and cost-efficient variant of the GPT-5.4 family, optimized for speed-critical and high-volume tasks. It supports text and image inputs and is designed for low-latency...
Model details →OpenAI: GPT-5.4 Nano vs Poolside: Laguna XS 2.1
OpenAI: GPT-5.4 Nano and Poolside: Laguna XS 2.1 are evenly matched on 6 axes — pick the one whose provider, latency, or licensing fits your stack.
Laguna XS 2.1 is the latest coding agent model in the 33B-A3B category from [Poolside](https://poolside.ai/) and a step forward from their Laguna XS.2 model (released in April 2026). It combines...
Model details →Side-by-side comparison
| Capability | OpenAI: GPT-5.4 Nano | Poolside: Laguna XS 2.1 | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 400K | 262K | 🏆 OpenAI: GPT-5.4 Nano |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $0.20 | $0.06 | 🏆 Poolside: Laguna XS 2.1 |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $1.25 | $0.12 | 🏆 Poolside: Laguna XS 2.1 |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | Yes | — | 🏆 OpenAI: GPT-5.4 Nano |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is OpenAI: GPT-5.4 Nano better than Poolside: Laguna XS 2.1?
OpenAI: GPT-5.4 Nano and Poolside: Laguna XS 2.1 are evenly matched on 6 axes — pick the one whose provider, latency, or licensing fits your stack.
What's the price difference between OpenAI: GPT-5.4 Nano and Poolside: Laguna XS 2.1?
Input: $0.20 vs $0.06 per 1M tokens. Output: $1.25 vs $0.12 per 1M tokens.
What context windows do OpenAI: GPT-5.4 Nano and Poolside: Laguna XS 2.1 support?
OpenAI: GPT-5.4 Nano supports up to 400K tokens. Poolside: Laguna XS 2.1 supports up to 262K tokens.
Do both OpenAI: GPT-5.4 Nano and Poolside: Laguna XS 2.1 support tool calling?
OpenAI: GPT-5.4 Nano: yes. Poolside: Laguna XS 2.1: yes.
Compare OpenAI: GPT-5.4 Nano with other models
vs Anthropic Claude Haiku Latestvs Anthropic Claude Sonnet Latestvs Anthropic: Claude Fable Latestvs Anthropic: Claude Opus Latest