GPT-5.6 Terra vs Laguna S 2.1: Specs & Benchmark Comparison
| Characteristic | GPT-5.6 Terra | Laguna S 2.1 |
|---|---|---|
| Company | OpenAI | Poolside |
| Release Date | July 9, 2026 | July 21, 2026 |
| Parameters | — | 118B |
| Multimodal | Yes | No |
| Context (input) | 1.1M | 1.0M |
| Context (output) | 128K | — |
| Input Price / 1M | $2.00 | $0.10 |
| Output Price / 1M | $12.00 | $0.20 |
| Average Score | 0.6 | 0.6 |
| Benchmarks | ||
| DeepSWE 1.1 | 0.7 | 0.4 |
| Terminal-Bench 2.1 | 0.9 | 0.7 |
| SWE-Bench Pro | 0.6 | 0.6 |
| Toolathlon | 0.5 | 0.5 |
Visual Benchmark Comparison
GPT-5.6 Terra
Laguna S 2.1
DeepSWE 1.10.7 vs 0.4
0.7
0.4
Terminal-Bench 2.10.9 vs 0.7
0.9
0.7
SWE-Bench Pro0.6 vs 0.6
0.6
0.6
Toolathlon0.5 vs 0.5
0.5
0.5
Verdict
Both models show equal results — the choice depends on your specific use case.
Overall Performance
Both models show comparable average scores: GPT-5.6 Terra — 0.6, Laguna S 2.1 — 0.6.
API Cost
Laguna S 2.1 is 46.7x cheaper: input $0.10/1M vs $2.00/1M tokens.
Context Window
GPT-5.6 Terra supports a larger context: 1M vs 1M tokens.
Recency
Both models were released around the same time: 7/9/2026 and 7/21/2026.
More About These Models
Related Comparisons
Frequently Asked Questions
Which is better for coding — GPT-5.6 Terra or Laguna S 2.1?
Direct comparison on the SWE-Bench benchmark is not available. We recommend reviewing other metrics on the comparison page.
Which model is cheaper — GPT-5.6 Terra or Laguna S 2.1?
Laguna S 2.1 is cheaper for input: $0.10 per 1M tokens vs $2.00.
Which has a larger context window — GPT-5.6 Terra or Laguna S 2.1?
GPT-5.6 Terra supports a larger context: 1,050,000 tokens vs 1,048,576.
The GPT-5.6 Terra and Laguna S 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 GPT-5.6 Terra or Laguna S 2.1 page. See also the complete list of AI model comparisons.