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API Pricing

OpenAI API pricing

OpenAI API pricing on 5 platforms: 227 GPT endpoints by OpenAI and 834 current prices. The cheapest exact price is $0.024/M in for gpt-oss-20b (batch), on OpenRouter. Prices are read from each platform daily and tagged by task, resolution and duration.

Endpoints
227
Current prices
834
Platforms
5
Cheapest
$0.024/M in
Compare a standard job:GPT-6.1 Sol

OpenAI API pricing by platform

One row per model, matched across platforms by its model id; each cell is input / output per million tokens. Green is the cheapest platform for that model. Different models are never ranked against each other.

See all in the price library
ModelOpenRouterkie.aiReplicateAPIMart
GPT-6.1 Sol$2 in$10 out$0.6 in$3 out—$1.6 in$8 out
GPT-6.1 Terra$1 in$5 out$0.3 in$1.5 out—$0.8 in$4 out
GPT-6 Astra$10 in$50 out$2.8 in$14 out—$8 in$40 out
GPT-6 Luna$0.1 in$0.5 out$0.03 in$0.15 out—$0.08 in$0.4 out
GPT-6 Sol$2 in$10 out$0.6 in$3 out—$1.6 in$8 out
GPT-5.6 Luna$0.2 in$1.2 out$0.056 in$0.336 out$1 in$6 out$0.16 in$0.96 out
GPT-5.6 Sol$4 in$20 out$1.4 in$8.4 out$2 in$10 out—
GPT-5.6 Terra$2 in$12 out$0.56 in$3.36 out$2.5 in$15 out$1.6 in$9.6 out
GPT-5.5$5 in$30 out$1.4 in$8.4 out—$4 in$24 out
GPT-5.4$2.5 in$15 out—$2.5 in$15 out$2 in$12 out
GPT-5.4 Mini$0.75 in$4.5 out——$0.6 in$3.6 out
GPT-5.4 Nano$0.2 in$1.25 out——$0.16 in$1 out
GPT-5.4 Pro$30 in$180 out——$24 in$144 out
GPT-5.3-Codex$1.75 in$14 out——$1.4 in$11.2 out
GPT-5.2$1.75 in$14 out$0.44 in$3.5 out$1.75 in$14 out$1.4 in$11.2 out
GPT-5.2 Chat$1.75 in$14 out——$1.4 in$11.2 out
GPT-5.2-Codex$1.75 in$14 out——$1.4 in$11.2 out
GPT-5.2 Pro$21 in$168 out——$16.8 in$134.4 out
GPT-5.1$1.25 in$10 out—$1.25 in$10 out$1 in$8 out
GPT-5.1-Codex$1.25 in$10 out——$1 in$8 out
GPT-5.1-Codex-Max$1.25 in$10 out——$1 in$8 out
GPT-5.1-Codex-Mini$0.25 in$2 out——$0.2 in$1.6 out
GPT-5$1.25 in$10 out—$1.25 in$10 out$1 in$8 out
GPT-5 Mini$0.25 in$2 out—$0.25 in$2 out$0.2 in$1.6 out
GPT-5 Nano$0.05 in$0.4 out—$0.05 in$0.4 out$0.04 in$0.32 out
GPT-5 Pro$15 in$120 out—$15 in$120 out$12 in$96 out
GPT-4.1$2 in$8 out—$2 in$8 out$1.6 in$6.4 out
GPT-4.1 Mini$0.4 in$1.6 out—$0.4 in$1.6 out$0.32 in$1.28 out
GPT-4.1 Nano$0.1 in$0.4 out——$0.08 in$0.32 out
GPT-4o (2024-08-06)$2.5 in$10 out—$2.5 in$10 out$2 in$8 out
Show 9 more models
ModelOpenRouterkie.aiReplicateAPIMart
GPT-4o-mini (2024-07-18)$0.15 in$0.6 out—$0.15 in$0.6 out$0.12 in$0.48 out
gpt-4o-mini-transcribe——$3 in$5 out$1 in$4 out
gpt-4o-transcribe——$6 in$10 out$2 in$8 out
GPT-3.5 Turbo (older v0613)$1 in$2 out——$1.2 in$2.4 out
GPT-3.5 Turbo 16k$3 in$4 out——$2.4 in$7.2 out
OpenAI o3$2 in$8 out——$1.6 in$6.4 out
OpenAI o3 Pro$20 in$80 out——$16 in$64 out
gpt-oss-120b$0.15 in$0.6 out—$0.18 in$0.72 out—
gpt-oss-20b$0.03 in$0.13 out—$0.09 in$0.36 out—
Sold on one platform only (97)

Nothing to compare these with yet, so no price here is marked cheapest. Showing 40 of 97; the price library has the rest.

ModelPlatformUSD
GPT-6.1 Sol ProOpenRouter$2 in$10 out
GPT-6.1 Terra ProOpenRouter$1 in$5 out
GPT-6.1 Sol Pro (batch)OpenRouter$1 in$5 out
GPT-6.1 Sol (batch)OpenRouter$1 in$5 out
GPT-6.1 Terra Pro (batch)OpenRouter$0.5 in$2.5 out
GPT-6.1 Terra (batch)OpenRouter$0.5 in$2.5 out
GPT-6 Astra ProOpenRouter$10 in$50 out
GPT-6 Luna ProOpenRouter$0.1 in$0.5 out
GPT-6 Sol ProOpenRouter$2 in$10 out
GPT-6 Astra Pro (batch)OpenRouter$5 in$25 out
GPT-6 Astra (batch)OpenRouter$5 in$25 out
GPT-6 Luna Pro (batch)OpenRouter$0.05 in$0.25 out
GPT-6 Luna (batch)OpenRouter$0.05 in$0.25 out
GPT-6 Sol Pro (batch)OpenRouter$1 in$5 out
GPT-6 Sol (batch)OpenRouter$1 in$5 out
gpt-5.6APIMart$3.2 in$16 out
GPT-5.6 Luna ProOpenRouter$0.2 in$1.2 out
GPT-5.6 Sol ProOpenRouter$4 in$20 out
GPT-5.6 Terra ProOpenRouter$2 in$12 out
GPT-5.6 Luna Pro (batch)OpenRouter$0.1 in$0.6 out
GPT-5.6 Luna (batch)OpenRouter$0.1 in$0.6 out
GPT-5.6 Sol Pro (batch)OpenRouter$2 in$10 out
GPT-5.6 Sol (batch)OpenRouter$2 in$10 out
GPT-5.6 Terra Pro (batch)OpenRouter$1 in$6 out
GPT-5.6 Terra (batch)OpenRouter$1 in$6 out
GPT-5.5 ProOpenRouter$30 in$180 out
GPT-5.5 Pro (batch)OpenRouter$15 in$90 out
GPT-5.5 (batch)OpenRouter$2.5 in$15 out
GPT-5.4 Mini (batch)OpenRouter$0.375 in$2.25 out
GPT-5.4 Nano (batch)OpenRouter$0.1 in$0.625 out
GPT-5.4 Pro (batch)OpenRouter$15 in$90 out
GPT-5.4 (batch)OpenRouter$1.25 in$7.5 out
GPT-5.2 Pro (batch)OpenRouter$10.5 in$84 out
GPT-5.2 (batch)OpenRouter$0.875 in$7 out
gpt-5.1-chat-latestAPIMart$1 in$8 out
GPT-5.1 (batch)OpenRouter$0.625 in$5 out
gpt-5-chat-latestAPIMart$1 in$8 out
gpt-5-codexAPIMart$1 in$8 out
gpt-5-search-apiAPIMart$1 in$8 out
gpt-5-structuredReplicate$0.05 in$0.4 out

GPT API pricing FAQ

How much does the GPT API cost?

GPT-6.1 Sol: from $0.6/M in ($3 output) on kie.ai, up to $2/M in ($10 output). GPT-6.1 Terra: from $0.3/M in ($1.5 output) on kie.ai, up to $1/M in ($5 output). GPT-6 Astra: from $2.8/M in ($14 output) on kie.ai, up to $10/M in ($50 output). GPT-6 Luna: from $0.03/M in ($0.15 output) on kie.ai, up to $0.1/M in ($0.5 output). Each price is the platform’s own list price, read daily.

Which platform has the cheapest GPT API?

It depends on the version: APIMart in 26, kie.ai in 10, OpenRouter in 3. No platform is cheapest for every version, so compare the one you will call.

Which platforms sell the GPT API?

5 of the platforms tracked here: OpenRouter, kie.ai, APIMart, Replicate, fal. Together they list 227 endpoints and 834 prices.

How current are these prices?

A collector reads each platform’s pricing API or page daily and keeps the response. Every price links to the listing it came from, so you can check it before you call.

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