Perplexity Decider Flash v1.2
pplx-decider-flash-v1-2 is the 4B fast model for Perplexity's Decisions API, released in October 2026 (alias pplx-decider-flash-latest).
Provider
Perplexity
Model family
Perplexity Decider
Decision model
Cost tier
Decider Flash
Status
Current
Technical specs
- Inputs
- text, image
- Outputs
- text
- License
- Proprietary API
- Api Alias
- pplx-decider-flash-latest
- Max Images
- 8
- Parameters
- 4B
- Max Input Tokens
- 256,000
- Input Usd Per Million
- 0.01
- Output Usd Per Million
- 0
- Capabilities
- Structured decisions via POST /v1/decisions
- Text and up to 8 images per question
Why teams choose it
Complex reasoning
Useful for workflows that require structured thinking, multi-step logic, and deeper analysis than lightweight models provide.
Long-context analysis
Helps teams summarize, compare, and extract insights from long documents without losing important nuance.
Perplexity roadmap vigilance
Use published model pages—not stale marketing blurbs—for modalities, quotas, pricing, and policy; schedule revalidation tied to vendor release notes.
Cost-efficient routing
Useful as part of a routing stack where cheap models handle drafts and confirmations and this tier handles genuinely hard passages.
Tradeoffs to know
- Smaller 4B model; use Decider v1.2 for harder judgments.
When not to use this
- Perplexity's docs do not give an exact release day.
Benchmarks
No independent or vendor benchmark scores in this catalog entry.
Perplexity Decider family lineup
Related models
Perplexity Decider Flash v1.2 FAQ
What is Perplexity Decider Flash v1.2?
pplx-decider-flash-v1-2 is the 4B fast model for Perplexity's Decisions API, released in October 2026 (alias pplx-decider-flash-latest). It uses the same POST /v1/decisions endpoint and limits as Decider v1.2: text and image input, under 256K input tokens, and up to 8 images per question. Pricing is $0.01 per million input tokens; output is free.
When does Perplexity Decider Flash v1.2 fit best?
High-volume classification and filtering
What should teams watch out for with Perplexity Decider Flash v1.2?
Smaller 4B model; use Decider v1.2 for harder judgments.
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