As of August 20, 2026, Laguna XS 2.1 is 60% cheaper per million tokens than Gemini 1.5 Flash. Gemini 1.5 Flash is $0.15 / $0.60 per million input/output tokens versus Laguna XS 2.1 at $0.10 / $0.20. Sources: https://ai.google.dev/gemini-api/docs/pricing and https://poolside.ai
Sources: Gemini API pricing (https://ai.google.dev/gemini-api/docs/pricing); Poolside pricing (https://poolside.ai)
Gemini 1.5 Flash
Input
$0.15
Output
$0.60
Laguna XS 2.1
Poolside
Input
$0.10
Output
$0.20
Token pricing, specs, and benchmarks side by side
Gemini 1.5 FlashLaguna XS 2.1Verdict
Both models are closely matched on benchmarks. Laguna XS 2.1 has the pricing advantage, making it the better value unless Gemini 1.5 Flash's specific capabilities are critical to your workflow.
As of August 20, 2026, Laguna XS 2.1 is 60% cheaper on blended LLM API pricing. Laguna XS 2.1 costs $0.10 per million input tokens and $0.20 per million output tokens ($0.30 blended 1M-in + 1M-out). Gemini 1.5 Flash costs $0.15 / $0.60 per million tokens ($0.75 blended). Sources: https://ai.google.dev/gemini-api/docs/pricing and https://poolside.ai. The cheapest LLM for your app still depends on how many output tokens you generate.
Gemini 1.5 Flash Gemini API pricing is $0.15 input and $0.60 output per million tokens via Google. Laguna XS 2.1 Poolside API pricing is $0.10 input and $0.20 output per million tokens via Poolside. Use those four numbers, not ChatGPT Plus or Claude Pro subscription prices, when you are comparing APIs.
Laguna XS 2.1 has a published SWE-bench Verified score of 70.9%. Gemini 1.5 Flash does not have that eval on this page yet.
Gemini 1.5 Flash supports a 1M token context window, while Laguna XS 2.1 supports 262K tokens. Gemini 1.5 Flash offers a larger context window. Filling a larger window bills more input tokens, so the cheaper-per-million model can still cost more on long documents.
Shared benchmark scores for Gemini 1.5 Flash and Laguna XS 2.1 are still limited. Check the comparison table for the evals each model has published. Check the comparison table for GPQA Diamond, SWE-bench, MMLU, HLE, and the other evals we track. Token price and benchmark score together are the usual LLM comparison, not either number alone.
Both Gemini 1.5 Flash and Laguna XS 2.1 are production API models. For cost-sensitive production traffic, Laguna XS 2.1 has better economics on the blended 1M-in + 1M-out scale. For maximum capability, weight the benchmark table for your domain. Many production stacks route cheap models for drafts and a frontier model for the hard turn, which is usually cheaper than sending everything to the expensive API.
Yes. Call Gemini 1.5 Flash through Google and Laguna XS 2.1 through Poolside with separate API keys, or through a gateway that already wraps both. Keep prompts in tokens, not characters, when you estimate the invoice. AnotherWrapper templates can swap providers without rewriting auth and billing.
List rates are the latest published Gemini API pricing and Poolside API pricing, quoted per million tokens. Official rate sheets: https://ai.google.dev/gemini-api/docs/pricing and https://poolside.ai. Prompt caching, batch APIs, and committed-use discounts can change the invoice. Benchmark scores are from official publications and independent evals, updated as new numbers land.
Gemini 1.5 Flash supports up to 8K output tokens per request, while Laguna XS 2.1 supports up to an unspecified number of output tokens. Output tokens are usually the expensive half of API pricing, so a higher max output cap is a capability, not a discount.
Gemini 1.5 Flash has a measured throughput of approximately 150 tokens/second. Throughput data for Laguna XS 2.1 is not yet available. Throughput (tokens per second) and time-to-first-token are why two models with the same per-million-token price can still feel different in chat and agents.
Use the model pickers at the top of this LLM comparison. Search any model in the index and the URL updates. Open Gemini 1.5 Flash or Laguna XS 2.1 from the sidebar for the single-model API pricing page, or go back to the LLM pricing table to sort by cheapest blended cost.
This comparison covers API pricing, context window, throughput, and benchmark scores. Gemini 1.5 Flash costs $0.15/M input and $0.60/M output. Laguna XS 2.1 costs $0.10/M input and $0.20/M output.
Rank both on the LLM leaderboard, SWE-bench, and Humanity's Last Exam.
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