API cost decision in 10 seconds
NewGPT-6 Astra Pro vs Laguna XS.2 (free)
Pick Laguna XS.2 (free) for lower cost; pick GPT-6 Astra Pro only if the larger context window matters more.
Pricing data updated:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Laguna XS.2 (free) for lower cost; pick GPT-6 Astra Pro only if the larger context window matters more.
On the standard 1M input plus 500K output workload, Laguna XS.2 (free) is estimated at $0 vs $35 for GPT-6 Astra Pro, saving $35 (100% lower).
Cost-first pickLaguna XS.2 (free)
Context-first pickGPT-6 Astra Pro
Sample savings$35100%
10x traffic gap$350
GPT-6 Astra Pro has more context, but Laguna XS.2 (free) saves $35 on the standard workload. At 10x that traffic, the same price gap is about $350. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Laguna XS.2 (free) stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | GPT-6 Astra Pro | Laguna XS.2 (free) |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Laguna XS.2 (free) | $75 | $0 |
| Balanced workload | 1M input + 1M output | Laguna XS.2 (free) | $60 | $0 |
| Output-heavy chatbot | 1M input + 5M output | Laguna XS.2 (free) | $260 | $0 |
Estimate your workload cost
Your Workload Cost
This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.
Quick Decision
Laguna XS.2 (free) has the lower input price, Laguna XS.2 (free) has the lower output price, and GPT-6 Astra Pro offers the larger context window.
For a 1M input token plus 500K output token workload, the estimated API cost is $35 for GPT-6 Astra Pro and $0 for Laguna XS.2 (free).
Choose GPT-6 Astra Pro when you care most about larger context window.
Choose Laguna XS.2 (free) when you care most about lower input-token price, and lower output-token price.
| Feature | NewGPT-6 Astra Pro (OpenAI) | Laguna XS.2 (free) (Poolside) |
|---|---|---|
| Input Price prompt tokens per 1M | $10 | $0 |
| Completion Price per 1M tokens | $50 | $0 |
| Sample Workload Cost 1M input + 500K output | $35 | $0 |
| Context Window | 1.05M | 262.14K |
| Release Date | 2026-09-04 | 2026-04-28 |
GPT-6 Astra Pro is the same underlying model as [GPT-6 Astra](https://openrouter.ai/openai/gpt-6-astra), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode
Laguna XS.2 is the second-generation model in the XS size class from [Poolside](https://poolside.ai/), their efficient coding agent series. It combines tool calling and reasoning capabilities with a compact footprint, offering...
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Laguna XS.2 (free) | On the standard 1M input plus 500K output workload, Laguna XS.2 (free) is estimated at $0 vs $35 for GPT-6 Astra Pro, saving $35 (100% lower). |
| High-volume input processing | Laguna XS.2 (free) | Lower prompt-token price matters most when prompts or retrieved passages dominate the bill. |
| Long responses and chatbots | Laguna XS.2 (free) | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | GPT-6 Astra Pro | A larger context window leaves more room for retrieved passages and source files. |