Model tracker / Decision models / Perplexity
Perplexity Decider Flash V1.2
Small open-weight 4B decision model on Qwen3.5-4B for low-cost text and image decisions
Perplexity Decider Flash V1.2 is an open-weight decision model from Perplexity (Apache 2.0, 4B parameters): it answers typed questions, such as yes or no, pick one or pick several, with probabilities instead of writing text. It costs $0.01 per million input tokens (OpenRouter, Vercel AI Gateway), and output is free. It scores 62.5 (self-hosted; seconds are the board's estimate) on the independent JevBench Capability Score (board v1.7.46), where Jev, the reference, scores 77.1.
- Made by
- Perplexity
- Weights
- Open, Apache 2.0
- Size
- 4B
- Where
- OpenRouter, Vercel AI Gateway
- Images
- Yes
- Context
- 262,144 (trained on up to about 32K)
- Fine-tuning
- Not stated
Perplexity Decider Flash V1.2 price
US dollars per million input tokens. Decision models don't write text, so none of the hosted ones charge for output.
| Where | Input | Output | Notes | Checked |
|---|---|---|---|---|
| OpenRouter, Vercel AI Gateway | $0.01 | Free | Output is free. Price on OpenRouter and Vercel's AI Gateway. | 2026-10-24 |
Perplexity Decider Flash V1.2 benchmarks
| Benchmark | Result | What it measures | Reported by |
|---|---|---|---|
| JevBench v1.7.46 | 62.5 | Capability Score: accuracy and calibration on typed decisions, with Jev as the reference system | Independent |
| JevBench time | 0.23 s | Seconds per decision: measured end to end for hosted APIs, the board's estimate for self-hosted models | Independent |
Makers' speeds are measured on their own hardware and aren't comparable with each other or with JevBench's timings.
Decision models like Perplexity Decider Flash V1.2
Every other decision model we track, by independent JevBench score.
| Model | Input / M | JevBench | Weights |
|---|---|---|---|
| Perplexity Decider Flash V1.2 | $0.01 | 62.5 | Open |
| Perplexity Decider V1.2 Perplexity | $0.02 | 81.7 | Open |
| d1-ultra Liquid AI | $0.042 | 80.5 | Closed |
| Clef Cloudflare | $0.24 | 75.3 | Open |
| Jev 1.14 TypeSafe AI | $0.042 | 75.0 | Closed |
| d1 Liquid AI | $0.02 | 74.4 | Closed |
| OpenAI Decisions (GPT-6 Luna) OpenAI | $0.10 | 73.5 | Closed |
| Microsoft-Decision-1 Microsoft | $0.042 | 70.8 | Closed |
| Clef-flash Cloudflare | $0.038 | 63.8 | Open |
| Clef-omni Cloudflare | $0.15 | 58.3 | Open |
| d1-3B Liquid AI | Self-host | 49.5 | Open |
| d1-omni-600M (experimental) Liquid AI | Self-host | 32.8 | Open |
| Laya Convai Innovations | Free | 32.5 | Open |
| CLM-8B Stanford and NVIDIA | Self-host | 20.1 | Open |
| Clairic Cloudflare | $0.10 | – | Closed |
| Elephant-1 Baseten (Base Labs) | Free | – | Open |
| Mammoth-1 Baseten (Base Labs) | Free | – | Open |
| Strands Decider 2B AWS Strands Labs | Self-host | – | Open |
Compare them all in the decision models table →
Perplexity Decider Flash V1.2 FAQ
How much does Perplexity Decider Flash V1.2 cost?
Perplexity Decider Flash V1.2 costs $0.01 per million input tokens at OpenRouter, Vercel AI Gateway. Output is free. Price on OpenRouter and Vercel's AI Gateway. Checked 24 October 2026.
Is Perplexity Decider Flash V1.2 open weight?
Yes. Perplexity publishes the weights under Apache 2.0, so you can run and fine-tune it yourself.
How fast is Perplexity Decider Flash V1.2?
Perplexity doesn't publish a latency figure. JevBench gives 0.23 seconds per decision, its estimate for self-hosting.
How does Perplexity Decider Flash V1.2 compare with Jev?
On JevBench's Capability Score (board v1.7.46), Perplexity Decider Flash V1.2 scores 62.5 against Jev's 77.1. Jev costs $0.042 per million input tokens; Perplexity Decider Flash V1.2 costs $0.01. JevBench is a one-person project that uses Jev as its reference, which favours cheap hosted models.