Live GPU cloud price comparison across the whole market, as a REST API and MCP server. FastGPU brokers GPU capacity: describe the cluster you need and get competing quotes from capacity holders, each shown next to live prices from RunPod, Vast.ai, Lambda, the hyperscalers and more. Free for buyers,
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{
"openapi": "3.1.0",
"info": {
"title": "FastGPU API",
"description": "Live GPU cloud price comparison across the whole market, as a REST API and MCP server. FastGPU brokers GPU capacity: describe the cluster you need and get competing quotes from capacity holders, each shown next to live prices from RunPod, Vast.ai, Lambda, the hyperscalers and more. Free for buyers, no sales calls.",
"version": "1.0.0",
"contact": {
"name": "FastGPU",
"url": "https://fastgpu.co/docs"
}
},
"externalDocs": {
"description": "Docs, the MCP server and the open CC BY 4.0 dataset",
"url": "https://fastgpu.co/docs"
},
"servers": [
{
"url": "https://fastgpu.co"
}
],
"tags": [
{
"name": "Prices",
"description": "Live GPU rental prices, cheapest first. /api/v1/gpus needs no key."
},
{
"name": "Matching",
"description": "Match an AI workload to the cheapest live GPU that can run it. No key required."
},
{
"name": "Router",
"description": "Launch and manage GPUs through FastGPU (API key required)."
}
],
"paths": {
"/api/v1/gpus": {
"get": {
"operationId": "list_gpu_prices",
"tags": [
"Prices"
],
"summary": "List cheapest GPU prices",
"description": "One entry per GPU model with its cheapest live on-demand cloud rental price in USD per GPU-hour, the provider offering it, and how many providers rent it, from FastGPU's live price feed across marketplaces, neoclouds and hyperscalers (RunPod, Vast.ai, Lambda, AWS and more). Use it to compare GPU rental prices or to find where a named GPU is cheapest to rent. Each price is the provider's own per-GPU rate: cheapest_min_gpu_count says when it is only sold as a multi-GPU instance, and cheapest_billed_separately names what the provider bills on top of it (CPU, memory, storage), null when the rate includes CPU and memory. page_url links to the GPU's live price page with every offer. Rental prices only: it does not rent, reserve or launch GPUs. No key required.",
"parameters": [
{
"name": "vendor",
"in": "query",
"required": false,
"description": "Filter by GPU vendor.",
"schema": {
"type": "string",
"enum": [
"NVIDIA",
"AMD"
]
}
},
{
"name": "tier",
"in": "query",
"required": false,
"description": "Filter by tier.",
"schema": {
"type": "string",
"enum": [
"flagship",
"datacenter",
"prosumer",
"entry"
]
}
}
],
"responses": {
"200": {
"description": "Success",
"content": {
"application/json": {
"schema": {
"type": "object",
"properties": {
"updated_at": {
"type": [
"string",
"null"
]
},
"stale": {
"type": "boolean"
},
"count": {
"type": "integer"
},
"gpus": {
"type": "array",
"items": {
"type": "object",
"properties": {
"gpu": {
"type": "string"
},
"vram_gb": {
"type": [
"number",
"null"
]
},
"vendor": {
"type": [
"string",
"null"
]
},
"arch": {
"type": [
"string",
"null"
]
},
"tier": {
"type": [
"string",
"null"
]
},
"cheapest_usd_hr": {
"type": [
"number",
"null"
]
},
"cheapest_provider": {
"type": [
"string",
"null"
]
},
"cheapest_min_gpu_count": {
"type": [
"integer",
"null"
]
},
"cheapest_billed_separately": {
"type": [
"string",
"null"
]
},
"provider_count": {
"type": "integer"
},
"offer_count": {
"type": "integer"
},
"slug": {
"type": "string"
},
"url": {
"type": "string",
"description": "Site-relative path of this GPU's live price page, e.g. /gpus/h100-sxm."
},
"page_url": {
"type": "string",
"description": "Absolute URL of this GPU's live price page, with every live offer."
}
}
}
}
},
"required": [
"count",
"gpus"
]
}
}
}
}
}
}
},
"/api/v1/match": {
"get": {
"operationId": "match_workload",
"tags": [
"Matching"
],
"summary": "Match a workload to the cheapest GPU",
"description": "Describe a job (an open-weight model to serve or fine-tune, a model size, or a GPU need) and get up to eight ranked GPU configurations that can run it at the lowest live price, each with the GPU count, the effective USD per hour for the whole configuration, and a one-line reason; the result also states the VRAM the job needs and, when a hyperscaler can run the same job, which one and what percent cheaper the top match is. Use it when the user asks where to run a workload or which GPU they need, rather than the price of a named GPU. It sizes open-weight models only: an API-only model such as GPT-4 returns no matches and a note. Results mirror FastGPU's website and apply a small, disclosed tie-break toward providers that pay FastGPU a referral, only between otherwise equal offers (each match reports partner true/false). Optional hard limits (budget_usd_hr, max_total_usd with duration_hours, max_quote_age_minutes) leave out every configuration that breaks them, and limits reports what was applied and how many were left out. page_url links to the GPU's live price page. It does not rent, reserve or launch GPUs. No key required.",
"parameters": [
{
"name": "query",
"in": "query",
"required": false,
"description": "Plain-language job, e.g. \"cheapest to serve Llama 3 70B\", \"2x H100 for fine-tuning\" or \"a GPU with 80GB of memory\". Provide this OR a structured spec below.",
"schema": {
"type": "string"
},
"example": "cheapest to serve Llama 3 70B"
},
{
"name": "model",
"in": "query",
"required": false,
"description": "Open model name to size against, e.g. \"Llama 3 70B\", \"Qwen 72B\", \"Mixtral\".",
"schema": {
"type": "string"
}
},
{
"name": "params_b",
"in": "query",
"required": false,
"description": "Model size in billions of parameters when no exact model is named.",
"schema": {
"type": "number"
}
},
{
"name": "weights_gb",
"in": "query",
"required": false,
"description": "Measured size of the weights as stored, in GB: the file you will load (for example a GGUF Q4_K_M build, which holds more bits per parameter than its nominal 4). Replaces parameters times bytes per parameter in the memory estimate. Used for a model sized by its parameter count; the answer's workload.weights_gb is null when it was not (an image or speech model sized as a whole pipeline).",
"schema": {
"type": "number"
}
},
{
"name": "vram_gb",
"in": "query",
"required": false,
"description": "Rough VRAM the job needs, in GB, if you already know it.",
"schema": {
"type": "integer"
}
},
{
"name": "task",
"in": "query",
"required": false,
"description": "What the job does.",
"schema": {
"type": "string",
"enum": [
"inference",
"finetune-lora",
"finetune-full",
"generate",
"transcribe",
"embed"
]
}
},
{
"name": "precision",
"in": "query",
"required": false,
"description": "Numeric precision to size the model at.",
"schema": {
"type": "string",
"enum": [
"fp16",
"int8",
"int4"
]
}
},
{
"name": "gpu_count",
"in": "query",
"required": false,
"description": "Exact positive GPU count. Overrides a count in query text. Returns no matches if no supported configuration fits; omit for automatic sizing.",
"schema": {
"type": "integer"
}
},
{
"name": "min_gpu_memory_gb",
"in": "query",
"required": false,
"description": "Memory each GPU card must have, in GB (e.g. 80 for 80GB-class cards such as the H100 or A100 80GB). Smaller cards are never returned. On its own it lists every card that size, cheapest first.",
"schema": {
"type": "integer"
}
},
{
"name": "budget_usd_hr",
"in": "query",
"required": false,
"description": "Hard limit on the hourly price of the whole configuration, in USD. Configurations above it are not returned.",
"schema": {
"type": "number"
}
},
{
"name": "duration_hours",
"in": "query",
"required": false,
"description": "How long the job will run, in hours (fractions are fine). When sent, each match carries billed_hours and estimated_total_usd.",
"schema": {
"type": "number"
}
},
{
"name": "max_total_usd",
"in": "query",
"required": false,
"description": "Hard limit on estimated_total_usd, the GPU rental cost of the whole job, in USD. Needs duration_hours. Configurations above it are not returned.",
"schema": {
"type": "number"
}
},
{
"name": "max_quote_age_minutes",
"in": "query",
"required": false,
"description": "Hard limit on how old a price quote may be, in minutes. Configurations whose price was fetched from the provider longer ago are not returned.",
"schema": {
"type": "number"
}
},
{
"name": "region",
"in": "query",
"required": false,
"description": "Restrict to a data-residency region.",
"schema": {
"type": "string",
"enum": [
"US",
"EU",
"ASIA"
]
}
},
{
"name": "spot",
"in": "query",
"required": false,
"description": "Set true to include interruptible spot capacity for a cheaper rate.",
"schema": {
"type": "string",
"enum": [
"true",
"false"
]
}
},
{
"name": "reserved",
"in": "query",
"required": false,
"description": "Set true to include reserved / committed-term capacity for a lower rate.",
"schema": {
"type": "string",
"enum": [
"true",
"false"
]
}
}
],
"responses": {
"200": {
"description": "Success",
"content": {
"application/json": {
"schema": {
"type": "object",
"properties": {
"updated_at": {
"type": [
"string",
"null"
]
},
"stale": {
"type": "boolean"
},
"workload": {
"type": "object",
"properties": {
"interpretation": {
"type": "string"
},
"identified": {
"type": "boolean"
},
"task": {
"type": "string"
},
"precision": {
"type": "string"
},
"vram_required_gb": {
"type": "number"
},
"gpu_count": {
"type": [
"integer",
"null"
]
},
"min_gpu_memory_gb": {
"type": [
"integer",
"null"
]
},
"gpu_vendors": {
"type": [
"array",
"null"
],
"items": {
"type": "string"
}
}
}
},
"hero": {
"type": [
"object",
"null"
],
"properties": {
"hyperscaler_ceiling": {
"type": [
"string",
"null"
]
},
"savings_pct": {
"type": [
"number",
"null"
]
},
"same_model": {
"type": [
"boolean",
"null"
]
}
}
},
"count": {
"type": "integer"
},
"matches": {
"type": "array",
"items": {
"type": "object",
"properties": {
"gpu": {
"type": "string"
},
"gpu_count": {
"type": "integer"
},
"effective_usd_hr": {
"type": "number"
},
"monthly_usd": {
"type": "number"
},
"provider": {
"type": "string"
},
"provider_label": {
"type": [
"string",
"null"
]
},
"offer_type": {
"type": "string"
},
"reliability": {
"type": "string"
},
"fits_single_card": {
"type": "boolean"
},
"over_budget": {
"type": "boolean"
},
"tokens_per_sec": {
"type": [
"number",
"null"
]
},
"usd_per_million_tokens": {
"type": [
"number",
"null"
]
},
"score": {
"type": [
"number",
"null"
]
},
"partner": {
"type": "boolean"
},
"reason": {
"type": "string"
},
"billing_increment": {
"type": "string",
"enum": [
"per-second",
"per-minute",
"per-hour",
"varies"
],
"description": "How this provider's meter ticks for on-demand rental; varies means FastGPU has no verified figure."
},
"billed_hours": {
"type": [
"number",
"null"
],
"description": "Hours the provider bills for duration_hours: rounded up to whole hours on a per-hour meter and to whole minutes on a per-minute meter. Null when duration_hours was not sent."
},
"estimated_total_usd": {
"type": [
"number",
"null"
],
"description": "effective_usd_hr times billed_hours, rounded up to the cent. GPU rental only: storage, data transfer, CPU and memory billed separately, and provider minimums are not included. Null when duration_hours was not sent."
},
"fetched_at": {
"type": [
"string",
"null"
],
"description": "When this price was fetched from the provider (ISO 8601)."
},
"quote_age_seconds": {
"type": [
"integer",
"null"
],
"description": "Seconds between fetched_at and as_of. Null when the fetch time is unknown."
},
"url": {
"type": "string",
"description": "Site-relative path of this GPU's live price page, e.g. /gpus/h100-sxm."
},
"page_url": {
"type": "string",
"description": "Absolute URL of this GPU's live price page, with every live offer."
}
}
}
},
"as_of": {
"type": "string",
"description": "When this answer was computed (ISO 8601). Quote ages are measured against it."
},
"limits": {
"type": "object",
"description": "The hard limits this answer applied (null when one was not sent) and how many configurations each one left out.",
"properties": {
"budget_usd_hr": {
"type": [
"number",
"null"
]
},
"duration_hours": {
"type": [
"number",
"null"
]
},
"max_total_usd": {
"type": [
"number",
"null"
]
},
"max_quote_age_minutes": {
"type": [
"number",
"null"
]
},
"excluded": {
"type": "object",
"properties": {
"over_budget_usd_hr": {
"type": "integer"
},
"over_max_total_usd": {
"type": "integer"
},
"older_than_max_quote_age_minutes": {
"type": "integer"
}
}
},
"nearest_excluded": {
"type": [
"object",
"null"
],
"description": "When the limits leave no match: the cheapest configuration that can still run the job, and the limits it breaks.",
"properties": {
"gpu": {
"type": "string"
},
"gpu_count": {
"type": "integer"
},
"effective_usd_hr": {
"type": "number"
},
"monthly_usd": {
"type": "number"
},
"provider": {
"type": "string"
},
"provider_label": {
"type": [
"string",
"null"
]
},
"offer_type": {
"type": "string"
},
"reliability": {
"type": "string"
},
"fits_single_card": {
"type": "boolean"
},
"over_budget": {
"type": "boolean"
},
"tokens_per_sec": {
"type": [
"number",
"null"
]
},
"usd_per_million_tokens": {
"type": [
"number",
"null"
]
},
"score": {
"type": [
"number",
"null"
]
},
"partner": {
"type": "boolean"
},
"reason": {
"type": "string"
},
"billing_increment": {
"type": "string",
"enum": [
"per-second",
"per-minute",
"per-hour",
"varies"
],
"description": "How this provider's meter ticks for on-demand rental; varies means FastGPU has no verified figure."
},
"billed_hours": {
"type": [
"number",
"null"
],
"description": "Hours the provider bills for duration_hours: rounded up to whole hours on a per-hour meter and to whole minutes on a per-minute meter. Null when duration_hours was not sent."
},
"estimated_total_usd": {
"type": [
"number",
"null"
],
"description": "effective_usd_hr times billed_hours, rounded up to the cent. GPU rental only: storage, data transfer, CPU and memory billed separately, and provider minimums are not included. Null when duration_hours was not sent."
},
"fetched_at": {
"type": [
"string",
"null"
],
"description": "When this price was fetched from the provider (ISO 8601)."
},
"quote_age_seconds": {
"type": [
"integer",
"null"
],
"description": "Seconds between fetched_at and as_of. Null when the fetch time is unknown."
},
"url": {
"type": "string",
"description": "Site-relative path of this GPU's live price page, e.g. /gpus/h100-sxm."
},
"page_url": {
"type": "string",
"description": "Absolute URL of this GPU's live price page, with every live offer."
},
"breaks": {
"type": "array",
"items": {
"type": "string"
}
}
}
}
}
},
"note": {
"type": "string",
"description": "Why there are no matches, when there are none."
},
"error": {
"type": "string",
"description": "Present when the request was not valid; says what to send instead."
}
},
"required": [
"count",
"matches"
]
}
}
}
}
}
}
},
"/api/v1/fixings": {
"get": {
"operationId": "list_gpu_fixings",
"tags": [
"Prices"
],
"summary": "List daily GPU price fixings",
"description": "The frozen daily record of GPU rental prices: one row per GPU model per UTC day, taken at 07:00 UTC from the live price snapshot and never revised. Each row carries the floor (the cheapest posted on-demand price outside the hyperscalers) and the provider that set it, the on-demand median across providers, the spot floor, the hyperscaler median, the provider count behind each figure, and the in-stock share as a numerator and a denominator. Prices are posted list prices in USD per GPU-hour, not transaction prices. Newest day first; filter by date or GPU and page with limit and offset. The method is published at /methodology/fixings. No key required.",
"parameters": [
{
"name": "date",
"in": "query",
"required": false,
"description": "One fixing day as YYYY-MM-DD, or \"latest\" for the most recent one. Omit for the whole archive, newest day first.",
"schema": {
"type": "string"
},
"example": "latest"
},
{
"name": "gpu",
"in": "query",
"required": false,
"description": "One GPU's fixing series, by slug (h100-sxm) or model name (H100 SXM).",
"schema": {
"type": "string"
},
"example": "h100-sxm"
},
{
"name": "limit",
"in": "query",
"required": false,
"description": "Rows per page (default 100, at most 500).",
"schema": {
"type": "integer"
}
},
{
"name": "offset",
"in": "query",
"required": false,
"description": "Rows to skip, for paging (default 0). The response's next_offset is the value for the next page, or null on the last one.",
"schema": {
"type": "integer"
}
}
],
"responses": {
"200": {
"description": "Success",
"content": {
"application/json": {
"schema": {
"type": "object",
"properties": {
"current_method_version": {
"type": "string"
},
"fixing_hour_utc": {
"type": "integer"
},
"first_date": {
"type": [
"string",
"null"
]
},
"latest_date": {
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# Full source: https://raw.githubusercontent.com/api-evangelist/fastgpu/refs/heads/main/openapi/_original/fastgpu-api-openapi.json