Liquid d1-ultra vs Perplexity Decisions: monthly cost
Monthly cost of Liquid AI d1-ultra and Perplexity Decisions API (pplx-decider) side by side at 10k to 10M requests, from each vendor’s list price.
Classification500 in · 5 out tokens
| Requests / month | Liquid d1-ultra | Perplexity Decisions |
|---|---|---|
| 10k | $0.21 | $0.10 |
| 100k | $2.10 | $1.00 |
| 1M | $21.00 | $10.00 |
| 10M | $210 | $100 |
Formula: 1,000,000 requests × (500 in × $0.042 + 5 out × $0) ÷ 1,000,000
Chatbot turn1,000 in · 300 out tokens
| Requests / month | Liquid d1-ultra | Perplexity Decisions |
|---|---|---|
| 10k | $0.42 | $0.20 |
| 100k | $4.20 | $2.00 |
| 1M | $42.00 | $20.00 |
| 10M | $420 | $200 |
Formula: 1,000,000 requests × (1,000 in × $0.042 + 300 out × $0) ÷ 1,000,000
Agent loop step4,000 in · 500 out tokens
| Requests / month | Liquid d1-ultra | Perplexity Decisions |
|---|---|---|
| 10k | $1.68 | $0.80 |
| 100k | $16.80 | $8.00 |
| 1M | $168 | $80.00 |
| 10M | $1,680 | $800 |
Formula: 1,000,000 requests × (4,000 in × $0.042 + 500 out × $0) ÷ 1,000,000
Price notes
- Liquid AI d1-ultra · d1-ultra. Output free; cached input also $0.042. Images 1.5 tokens per 32×32 patch, billed again for each question. Free tier: New orgs get $2 free credit on Liquid Console. Not deducted here.
- Perplexity Decisions API · pplx-decider-v1.2. Output free; no per-request fee. State, questions and images count as input.
- List prices before free allowances and taxes. Presets are our assumptions, not vendor figures.
FAQ
Is Liquid d1-ultra or Perplexity Decisions cheaper?
Perplexity Decisions is cheaper for chatbot-size requests: $20.00 vs $42.00 a month at 1M requests (prices verified 2026-10-17).
How are the prices compared?
Liquid d1-ultra: $0.042 in / $0 out per 1M tokens (d1-ultra). Perplexity Decisions: $0.02 in / $0 out per 1M tokens (pplx-decider-v1.2). Same requests and token sizes for both, list prices before free allowances.
Does price decide which to use?
No. Check limits, status and fit on each API page and in the side-by-side compare tool before switching.
SourcesPricing pages
- 1Liquid AI d1-ultra pricingwww.liquid.ai/pricingVerified 2026-10-17
- 2Perplexity Decisions API pricingdocs.perplexity.ai/getting-started/pricingVerified 2026-10-17