IBM Granite 4.2 8B vs Laguna XS 2.1: Specs & Benchmark Comparison

IBM Granite 4.2 8B is developed by IBM, while Laguna XS 2.1 comes from Poolside. Laguna XS 2.1 was released in July 2026, and IBM Granite 4.2 8B followed a month later in August 2026. Laguna XS 2.1 is the larger model at roughly 33 billion parameters, against 8 billion for IBM Granite 4.2 8B.

The two models share 3 published benchmarks. Laguna XS 2.1 leads on 3 of them. The widest gaps are on SWE-bench Multilingual, where Laguna XS 2.1 scores 63.1% against 30.8%; SWE-Bench Pro, where Laguna XS 2.1 scores 47.6% against 19.1%. Averaged across everything we track, IBM Granite 4.2 8B sits at 56.7% and Laguna XS 2.1 at 54.8%.

Laguna XS 2.1 is available through an API at $0.10 per million input tokens with a 262K-token context window. We do not track a hosted API for IBM Granite 4.2 8B, so pricing and context cannot be compared directly.

Characteristic	IBM Granite 4.2 8B	Laguna XS 2.1
Company	IBM	Poolside
Release Date	August 25, 2026	July 2, 2026
Parameters	8B	33B
Multimodal	No	No
Context (input)	—	262K
Input Price / 1M	—	$0.10
Output Price / 1M	—	$0.20
Average Score	56.7%	54.8%
Benchmarks
SWE-bench Multilingual	30.8%	63.1%
SWE-Bench Pro	19.1%	47.6%
SWE-Bench Verified	47.7%	70.9%

Visual Benchmark Comparison

IBM Granite 4.2 8B

Laguna XS 2.1

SWE-bench Multilingual0.3 vs 0.6

0.3

0.6

SWE-Bench Pro0.2 vs 0.5

0.2

0.5

SWE-Bench Verified0.5 vs 0.7

0.5

0.7

Verdict

IBM Granite 4.2 8B leads in 1 out of 3 comparison categories.

Overall Performance

Both models show comparable average scores: IBM Granite 4.2 8B — 0.6, Laguna XS 2.1 — 0.5.

Programming

On SWE-Bench, both models are nearly equal: IBM Granite 4.2 8B — 0.5, Laguna XS 2.1 — 0.7.

Recency

IBM Granite 4.2 8B is newer: released 8/25/2026 vs 7/2/2026.

More About These Models

IBM Granite 4.2 8B

IBM — specs, benchmarks, API

Laguna XS 2.1

Poolside — specs, benchmarks, API

Related Comparisons

IBM Granite 4.2 3B vs IBM Granite 4.2 8B IBM Granite 4.2 30B vs IBM Granite 4.2 8B IBM Granite 4.2 8B vs Hy3 IBM Granite 4.2 8B vs Laguna S 2.1 DeepSeek-V4-Flash-0731 vs IBM Granite 4.2 8B IBM Granite 4.2 8B vs LFM2.5-2.6B

All model comparisons →

Frequently Asked Questions

Which is better for coding — IBM Granite 4.2 8B or Laguna XS 2.1?

On the SWE-Bench benchmark, Laguna XS 2.1 shows a better result: 70.9% vs 47.7%.

Which model is cheaper — IBM Granite 4.2 8B or Laguna XS 2.1?

API pricing data is available on the individual model pages.

Which has a larger context window — IBM Granite 4.2 8B or Laguna XS 2.1?

Context window data is available on the individual model pages.

The IBM Granite 4.2 8B 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 IBM Granite 4.2 8B or Laguna XS 2.1 page. See also the complete list of AI model comparisons.