Sonar Reasoning Pro vs Laguna XS 2.1
Laguna XS 2.1 costs 66.7x less per output token than Sonar Reasoning Pro ($0.12 vs $8.00 per million). Updated October 21, 2026; no benchmark has tested both models yet.
- Coding
- No data
- Overall
- No data
- Output $/M
- $8.00
- Coding
- No data
- Overall
- No data
- Output $/M
- $0.12
Sonar Reasoning Pro or Laguna XS 2.1: which to pick
Neither model has a coding score yet, so the two cannot be ranked on coding.
Compare them on price, context and the boards below.
No benchmark has tested both yet. Sonar Reasoning Pro has results on AA Intelligence Index; Laguna XS 2.1 has none yet. Compare them on price and context instead.
Which one for your work
Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.
Coding
Vibe Coding Index, six public coding benchmarks
No call
Neither has a coding score yet.
One side not measured
Intelligence
AA Intelligence Index
No call
Only Sonar Reasoning Pro has a AA Intelligence Index result, 11.8.
Directional only
Long documents
Listed context window
Laguna XS 2.1
Laguna XS 2.1 takes 262K tokens against 128K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Laguna XS 2.1
Sonar Reasoning Pro $0.0060, Laguna XS 2.1 $0.0001 per turn.
List prices
At a glance
- Coding index
- Sonar Reasoning Pro not benchmarked, Laguna XS 2.1 not benchmarked.
- Widest category
- None yet: no category has been tested on both models.
- Widest single gap
- None yet: no benchmark has tested both models.
- Output price
- Sonar Reasoning Pro $8.00 against Laguna XS 2.1 $0.12 per million output tokens, 66.7x apart.
- Context window
- Sonar Reasoning Pro takes 128K tokens, Laguna XS 2.1 262K.
Benchmark by benchmark
Every board either model has a result on, a category to a fold; bars are each result on a 0 to 100 scale. Only one model is measured on each, so no row names a leader.
IntelligenceDirectional onlyPublic boards, shown as published, kept out of the index1 board measured
| Benchmark | Sonar Reasoning Pro | Laguna XS 2.1 | Leader |
|---|---|---|---|
| AA Intelligence Index | 11.8 | Not measured | Only Sonar Reasoning Pro measured |
| Neither model has a result on the other 1 board here | |||
What each workload costs
Three fixed token mixes at each model's listed price, so per-token rates become a bill.
Chat turn
1K input + 500 output tokens
Laguna XS 2.1 costs less
Repository review
50K input + 3K output tokens
Laguna XS 2.1 costs less
Agent loop
200K input + 10K output tokens
Laguna XS 2.1 costs less
Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.
Specification differences
The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.
| Specification | Perplexity Sonar Reasoning Pro | Poolside Laguna XS 2.1 |
|---|---|---|
| Maker | Perplexity | Poolside |
| Weights | No public weights listed | Open weights |
| Released | March 7, 2025 | July 2, 2026 |
| Context window | 128K | 262K |
| Input $/Mtok | $2.00 | $0.06 |
| Output $/Mtok | $8.00 | $0.12 |
| Coding index | Not benchmarked | Not benchmarked |
| Independent measurements behind it | 0 | 0 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Sonar Reasoning Pro better than Laguna XS 2.1 for coding?
Neither model has a coding score yet, so the two cannot be ranked on coding. Compare them on price, context and the boards below.
Which is cheaper, Sonar Reasoning Pro or Laguna XS 2.1?
Sonar Reasoning Pro costs $2.00 per million input tokens and $8.00 per million output tokens; Laguna XS 2.1 costs $0.06 and $0.12. Cost per solved task is known for neither of them.
Which has the bigger context window, Sonar Reasoning Pro or Laguna XS 2.1?
Laguna XS 2.1, with 262K tokens against 128K.
Has any benchmark tested both Sonar Reasoning Pro and Laguna XS 2.1?
No benchmark has tested both yet. Sonar Reasoning Pro has results on AA Intelligence Index; Laguna XS 2.1 has none yet. Compare them on price and context instead. Data as of October 21, 2026.