Poolside: Laguna S 2.1 (free) vs GPT-5.3 Codex (xhigh): Which AI Model Is Better?

Updated March 26, 2026· Based on independent benchmark data

Quick Verdict

Both Poolside: Laguna S 2.1 (free) and GPT-5.3 Codex (xhigh) are competitive AI models. See the detailed comparison below to find which best fits your needs.

Head-to-Head Comparison

Metric	Poolside: Laguna S 2.1 (free)	GPT-5.3 Codex (xhigh)
Intelligence Score	N/A	54.0
Coding Score	N/A	53.1
Math Score	N/A	N/A
Speed (tok/s)	N/A	72 tok/s
Latency (TTFT)	N/A	83.91s
Input Price / 1M tokens	Free	$1.75
Output Price / 1M tokens	Free	$14
Context Window	262K	N/A
Max Output Tokens	33K	N/A
Input Modalities	Text	Text
Output Modalities	Text	Text
Free Tier	Yes	No

Detailed Analysis

Pricing

Poolside: Laguna S 2.1 (free) is completely free, while GPT-5.3 Codex (xhigh) costs $1.75/1M input tokens and $14/1M output tokens.

Choose Poolside: Laguna S 2.1 (free) if:

✓You want zero cost (Free vs paid)

Frequently Asked Questions

Can Poolside: Laguna S 2.1 (free) process images?

No, Poolside: Laguna S 2.1 (free) does not support image input. Neither model supports image input.

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View Poolside: Laguna S 2.1 (free)details →View GPT-5.3 Codex (xhigh)details →Full pricing comparison →

Data last synced: March 26, 2026