Grok 4.5 vs Laguna XS 2.1: Specs & Benchmark Comparison
Grok 4.5 is developed by xAI, while Laguna XS 2.1 comes from Poolside. Both were released in July 2026. Laguna XS 2.1 has a published size of about 33 billion parameters; xAI has not disclosed the parameter count of Grok 4.5.
We have 15 benchmark results for Grok 4.5 and 4 benchmark results for Laguna XS 2.1, but they overlap on a single test: SWE-Bench Pro, where Grok 4.5 scores 65.0% against 47.6%.
Laguna XS 2.1 is the cheaper API at $0.10 per million input tokens and $0.20 per million output tokens, roughly 20 times cheaper than Grok 4.5 at $2 and $6. Grok 4.5 takes the larger context window at 500K tokens, compared with 262K for Laguna XS 2.1. Grok 4.5 accepts text and images as input, while Laguna XS 2.1 accepts text. On tooling, only Grok 4.5 supports function calling and only Grok 4.5 offers structured output.
| Characteristic | Grok 4.5 | Laguna XS 2.1 |
|---|---|---|
| Company | xAI | Poolside |
| Release Date | July 16, 2026 | July 2, 2026 |
| Parameters | — | 33B |
| Multimodal | Yes | No |
| Context (input) | 500K | 262K |
| Input Price / 1M | $2.00 | $0.10 |
| Output Price / 1M | $6.00 | $0.20 |
| Average Score | 52.9% | 54.8% |
| Benchmarks | ||
| SWE-Bench Pro | 65.0% | 47.6% |
Visual Benchmark Comparison
Verdict
Grok 4.5 leads in 2 out of 4 comparison categories.
Both models show comparable average scores: Grok 4.5 — 0.5, Laguna XS 2.1 — 0.5.
Laguna XS 2.1 is 26.7x cheaper: input $0.10/1M vs $2.00/1M tokens.
Grok 4.5 supports a larger context: 500K vs 262K tokens.
Grok 4.5 is newer: released 7/16/2026 vs 7/2/2026.
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Frequently Asked Questions
Which is better for coding — Grok 4.5 or Laguna XS 2.1?
Which model is cheaper — Grok 4.5 or Laguna XS 2.1?
Which has a larger context window — Grok 4.5 or Laguna XS 2.1?
The Grok 4.5 and Laguna XS 2.1 comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Grok 4.5 or Laguna XS 2.1 page. See also the complete list of AI model comparisons.