Perplexity changed its API changelog
API changeloghttps://docs.perplexity.ai/changelog
ChangeAPI changelog
Perplexity added prompt caching for presets (cost reduction feature), reordered navigation menu, and clarified Agent API fast preset pricing impact (2× token costs for priority processing).
ModelsAgent APISearchDeprecationFeaturesRouterFiltersPresetsPricingMCPMultimodalSecuritySDKToolsFinanceIntegrationsAWSBillingEmbeddingsDocsPro SearchPlaygroundFile AttachmentsAPI KeysCost TrackingUsageFinancialAcademicReasoningAsyncBreaking ChangeOrganizationPortalImagesAccessStructured OutputsCitationsRate Limits
August 2026
Agent APIPresets
Fast preset updated
ModelsAgent APISearchDeprecationFeaturesPresetsRouterFiltersPricingMCPMultimodalSecuritySDKToolsFinanceIntegrationsAWSBillingEmbeddingsDocsPro SearchPlaygroundFile AttachmentsAPI KeysCost TrackingUsageFinancialAcademicReasoningAsyncBreaking ChangeOrganizationPortalImagesAccessStructured OutputsCitationsRate Limits
August 2026
Agent APIPresets
Prompt caching for presetsAgent API presets now use stable prompt cache keys automatically, allowing independent requests with the same preset to reuse the shared prompt prefix (system prompt and tool definitions). No request changes are required, and an explicit prompt_cache_key still overrides the preset default. This can reduce costs by about 5% for applications that use presets frequently, depending on cache utilization. The current preset values include each key for frozen configurations.
August 2026
Agent APIPresets
Fast preset updated
Confidence85%
Full diff
=================================================================== --- before +++ after @@ -5,13 +5,17 @@ > Use this file to discover all available pages before exploring further. Skip to main content FiltersClear -ModelsAgent APISearchDeprecationFeaturesRouterFiltersPresetsPricingMCPMultimodalSecuritySDKToolsFinanceIntegrationsAWSBillingEmbeddingsDocsPro SearchPlaygroundFile AttachmentsAPI KeysCost TrackingUsageFinancialAcademicReasoningAsyncBreaking ChangeOrganizationPortalImagesAccessStructured OutputsCitationsRate Limits +ModelsAgent APISearchDeprecationFeaturesPresetsRouterFiltersPricingMCPMultimodalSecuritySDKToolsFinanceIntegrationsAWSBillingEmbeddingsDocsPro SearchPlaygroundFile AttachmentsAPI KeysCost TrackingUsageFinancialAcademicReasoningAsyncBreaking ChangeOrganizationPortalImagesAccessStructured OutputsCitationsRate Limits Looking ahead? Check out our Feature Roadmap to see what’s coming next. August 2026 Agent APIPresets +Prompt caching for presetsAgent API presets now use stable prompt cache keys automatically, allowing independent requests with the same preset to reuse the shared prompt prefix (system prompt and tool definitions). No request changes are required, and an explicit prompt_cache_key still overrides the preset default. This can reduce costs by about 5% for applications that use presets frequently, depending on cache utilization. The current preset values include each key for frozen configurations. + +August 2026 +Agent APIPresets Fast preset updatedThe Agent API fast preset now uses openai/gpt-5.6-luna with minimal reasoning effort and priority processing. Dynamic fast preset requests pick up the change automatically. If you use a frozen configuration, update the model and reasoning effort and set service_tier to priority. Priority processing uses 2× the model’s standard token prices. August 2026 Agent APIRouterModels
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