Gemini 3.6 Flash vs Laguna S 2.1: Specs & Benchmark Comparison
Gemini 3.6 Flash is developed by Google, while Laguna S 2.1 comes from Poolside. Both were released in July 2026. Laguna S 2.1 has a published size of about 118 billion parameters; Google has not disclosed the parameter count of Gemini 3.6 Flash.
The two models share 3 published benchmarks. Gemini 3.6 Flash leads on 2 of them, Laguna S 2.1 on 1. The widest gaps are on DeepSWE 1.1, where Gemini 3.6 Flash scores 49.0% against 40.4%; Terminal-Bench 2.1, where Gemini 3.6 Flash scores 78.0% against 70.2%. Averaged across everything we track, Gemini 3.6 Flash sits at 68.0% and Laguna S 2.1 at 57.4%.
Laguna S 2.1 is the cheaper API at $0.10 per million input tokens and $0.20 per million output tokens, roughly 15 times cheaper than Gemini 3.6 Flash at $1.50 and $7.50. Both accept a context window of about 1M tokens. Gemini 3.6 Flash accepts text and images as input, while Laguna S 2.1 accepts text. On tooling, only Gemini 3.6 Flash supports function calling and only Gemini 3.6 Flash offers structured output.
| Characteristic | Gemini 3.6 Flash | Laguna S 2.1 |
|---|---|---|
| Company | Poolside | |
| Release Date | July 21, 2026 | July 21, 2026 |
| Parameters | — | 118B |
| Multimodal | Yes | No |
| Context (input) | 1.0M | 1.0M |
| Context (output) | 66K | — |
| Input Price / 1M | $1.50 | $0.10 |
| Output Price / 1M | $7.50 | $0.20 |
| Average Score | 68.0% | 57.4% |
| Benchmarks | ||
| DeepSWE 1.1 | 49.0% | 40.4% |
| Terminal-Bench 2.1 | 78.0% | 70.2% |
| SWE-Bench Pro | 58.7% | 59.4% |
Visual Benchmark Comparison
Verdict
Laguna S 2.1 leads in 1 out of 4 comparison categories.
Both models show comparable average scores: Gemini 3.6 Flash — 0.7, Laguna S 2.1 — 0.6.
Laguna S 2.1 is 30.0x cheaper: input $0.10/1M vs $1.50/1M tokens.
Same context size: 1M tokens.
Both models were released around the same time: 7/21/2026 and 7/21/2026.
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Frequently Asked Questions
Which is better for coding — Gemini 3.6 Flash or Laguna S 2.1?
Which model is cheaper — Gemini 3.6 Flash or Laguna S 2.1?
Which has a larger context window — Gemini 3.6 Flash or Laguna S 2.1?
The Gemini 3.6 Flash 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 Gemini 3.6 Flash or Laguna S 2.1 page. See also the complete list of AI model comparisons.