> ## Documentation Index > Fetch the complete documentation index at: https://gcore.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # List suitable flavors for instance resize ## OpenAPI ````yaml /api-reference/services_documented/cloud_api.yaml get /cloud/v1/instances/{project_id}/{region_id}/{instance_id}/available_flavors openapi: 3.1.0 info: title: Gcore OpenAPI – Cloud API description: >- This OpenAPI is an aggregated OpenAPI specification that unifies all Gcore products into a single file. It covers Cloud, CDN, DNS, WAAP, DDoS Protection, Object Storage, Streaming, and FastEdge services. version: '2026-05-15T06:37:28.230198+00:00' servers: - url: https://api.gcore.com security: - APIKey: [] tags: - name: Bare Metal x-displayName: Bare Metal - name: Container as a Service x-displayName: Container as a Service - name: Cost Reports x-displayName: Cost Reports - name: DDoS Protection x-displayName: DDoS Protection - name: Everywhere Inference x-displayName: Everywhere Inference - name: Everywhere Inference Apps x-displayName: Everywhere Inference Apps - name: File Shares x-displayName: File Shares - name: Floating IPs x-displayName: Floating IPs - name: Function as a Service x-displayName: Function as a Service - name: GPU Bare Metal x-displayName: GPU Bare Metal - name: GPU Virtual x-displayName: GPU Virtual - name: IP Ranges x-displayName: IP Ranges - name: Images x-displayName: Images - name: Instances x-displayName: Instances - name: Load Balancers x-displayName: Load Balancers - name: Logging x-displayName: Logging - name: Managed Kubernetes x-displayName: Managed Kubernetes - name: Managed PostgreSQL x-displayName: Managed PostgreSQL - name: Networks x-displayName: Networks - name: Placement Groups x-displayName: Placement Groups - name: Projects x-displayName: Projects - name: Quotas x-displayName: Quotas - name: Regions x-displayName: Regions - name: Registry x-displayName: Registry - name: Reservations x-displayName: Reservations - name: Reserved IPs x-displayName: Reserved IPs - name: Routers x-displayName: Routers - name: SSH Keys x-displayName: SSH Keys - name: Secrets x-displayName: Secrets - name: Security Groups x-displayName: Security Groups - name: Snapshot Schedules x-displayName: Snapshot Schedules - name: Snapshots x-displayName: Snapshots - name: Tasks x-displayName: Tasks - name: User Actions x-displayName: User Actions - name: User Role Assignments x-displayName: User Role Assignments - name: Volumes x-displayName: Volumes paths: /cloud/v1/instances/{project_id}/{region_id}/{instance_id}/available_flavors: get: tags: - Instances summary: List suitable flavors for instance resize operationId: InstanceFlavorHandler.get parameters: - in: path name: project_id required: true description: Project ID schema: type: integer - in: path name: region_id required: true description: Region ID schema: type: integer - in: path name: instance_id required: true description: Instance ID schema: type: string - in: query name: include_prices required: false description: Set to true if flavor listing should include flavor prices schema: type: boolean responses: '200': description: List of available flavors content: application/json: schema: $ref: >- #/components/schemas/InstanceFlavorExtendedCollectionSerializer components: schemas: InstanceFlavorExtendedCollectionSerializer: properties: count: description: Number of objects example: 1 examples: - 1 minimum: 0 title: Count type: integer results: description: Objects items: $ref: '#/components/schemas/InstanceFlavorExtendedSerializer' title: Results type: array required: - count - results title: InstanceFlavorExtendedCollectionSerializer type: object InstanceFlavorExtendedSerializer: description: Instances flavor schema properties: architecture: description: Flavor architecture type example: x86_64 examples: - x86_64 title: Architecture type: string capacity: anyOf: - type: integer - type: 'null' default: null description: Number of available instances of given configuration examples: - 1 title: Capacity currency_code: anyOf: - type: string - type: 'null' default: null description: >- Currency code. Shown if the `include_prices` query parameter if set to true examples: - USD title: Currency Code disabled: description: Disabled flavor flag example: false examples: - false title: Disabled type: boolean flavor_id: description: Flavor ID is the same as name example: g2-standard-32-64 examples: - g2-standard-32-64 title: Flavor Id type: string flavor_name: description: Flavor name example: g2-standard-32-64 examples: - g2-standard-32-64 title: Flavor Name type: string hardware_description: additionalProperties: type: string default: {} description: Additional hardware description title: Hardware Description type: object os_type: description: Flavor operating system example: linux examples: - linux title: Os Type type: string price_per_hour: anyOf: - type: number - type: integer - type: 'null' default: null description: >- Price per hour. Shown if the `include_prices` query parameter if set to true examples: - 1 title: Price Per Hour price_per_month: anyOf: - type: number - type: integer - type: 'null' default: null description: >- Price per month. Shown if the `include_prices` query parameter if set to true examples: - 720 title: Price Per Month price_status: anyOf: - $ref: '#/components/schemas/PriceDisplayStatus' - type: 'null' default: null description: Price status for the UI examples: - show ram: description: RAM size in MiB example: 2048 examples: - 2048 title: Ram type: integer reserved_capacity: anyOf: - type: integer - type: 'null' default: null description: Number of available instances of given flavor from reservations examples: - 5 title: Reserved Capacity vcpus: description: Virtual CPU count. For bare metal flavors, it's a physical CPU count example: 1 examples: - 1 title: Vcpus type: integer required: - flavor_id - flavor_name - vcpus - ram - disabled - os_type - architecture title: Instances flavor schema type: object PriceDisplayStatus: enum: - error - hide - show title: PriceDisplayStatus type: string securitySchemes: APIKey: description: >- API key for authentication. Make sure to include the word `apikey`, followed by a single space and then your token. Example: `apikey 1234$abcdef` type: apiKey in: header name: Authorization ````