Pairwise benchmark snapshot · Aug 17, 2026noindex (thin pair)
In this head-to-head showdown, Poolside: Laguna S 2.1 is more budget-friendly at $0.18/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.
OpenAI 5.6 mid tier. Official API $2/$12 per 1M after the Jul 30 2026 price cut.
Auto-discovered from OpenRouter (poolside/laguna-s-2.1). Preview until a second source matches.
Speed, cost, and intelligence tradeoffs across the OpenAI lineup
Single model data
No latency data
$0.18 / 1M output
Relative percentile scores computed across all active models in the benchmark catalog.
Each spoke is a skill. Farther from the center is better (0–100th percentile). Tap any dot to inspect details.
Category wins across reasoning intelligence, generation speed, and token cost.
Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy
Generation throughput and time to first token responsiveness
Cost per million tokens and max context window length
| Benchmark | GPT-5.6 Terra | Poolside: Laguna S 2.1 | Advantage Delta |
|---|---|---|---|
| Preference Elo | — | — | |
| Coding Elo | — | — | |
| LiveBench | — | — | |
| SWE-bench | — | — | |
| GPQA Diamond | — | — | |
| Time to first token | — | — | |
| Output speed | 128 tok/s | — | — |
| Input price | $0.09/1M | Poolside: Laguna S 2.1 (+$0.91/1M) | |
| Output price | $0.18/1M | Poolside: Laguna S 2.1 (+$5.82/1M) | |
| Context window | GPT-5.6 Terra (+1k) |
Simulate monthly production API costs in USD (US Dollar).
Poolside: Laguna S 2.1 is estimated to save $119.15/month ($1,430/year).
Need SWE-bench on both sides.
Lower output list price ($0.18/1M).
Need TTFT on both sides.
Larger window (1.1M).
GPT-5.6 Terra is the side marked multimodal in the catalog.
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | insufficient data | Need SWE-bench on both sides. |
| High-volume chat | Poolside: Laguna S 2.1 | Lower output list price ($0.18/1M). |
| Voice / low-latency UI | insufficient data | Need TTFT on both sides. |
| Long-document RAG | GPT-5.6 Terra | Larger window (1.1M). |
| Screenshots / vision | GPT-5.6 Terra | GPT-5.6 Terra is the side marked multimodal in the catalog. |
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Verified head-to-head card
