Home / OpenAI Switch to another OpenAI model GPT-6 Astra GPT-6.1 Sol GPT-5.6 Terra GPT-6 Luna GPT-5.3-Codex o3 GPT OSS 120B GPT OSS 20B Chat (latest) Codex Auto Review e2ee GPT OSS 120B P e2ee GPT OSS 20B P GPT 3.5 Turbo ↳ GPT 3.5 Turbo (0125 snapshot) ↳ GPT 3.5 Turbo (1106 snapshot) ↳ GPT 3.5 Turbo (0613 snapshot) GPT 4 ↳ GPT 4 (0613 snapshot) GPT 4 Turbo ↳ GPT 4 Turbo (04-09 snapshot) GPT 4.1 ↳ GPT 4.1 (04-14 snapshot) GPT 4.1 Fast GPT 4.1 Mini ↳ GPT 4.1 Mini (04-14 snapshot) GPT 4.1 Mini Fast GPT 4.1 Nano ↳ GPT 4.1 Nano (04-14 snapshot) GPT 4o ↳ GPT 4o (05-13 snapshot) ↳ GPT 4o (08-06 snapshot) ↳ GPT 4o (11-20 snapshot) GPT 4o Fast GPT 4o Mini ↳ GPT 4o Mini (07-18 snapshot) GPT 4o Mini Fast GPT 5 ↳ GPT 5 (08-07 snapshot) GPT 5 Chat (latest) GPT 5 Fast GPT 5 Mini ↳ GPT 5 Mini (08-07 snapshot) GPT 5 Mini Fast GPT 5 Nano ↳ GPT 5 Nano (08-07 snapshot) GPT 5 Pro ↳ GPT 5 Pro (10-06 snapshot) GPT 5 Search API ↳ GPT 5 Search API (10-14 snapshot) GPT 5.1 ↳ GPT 5.1 (11-13 snapshot) GPT 5.1 Chat (latest) GPT 5.1 Thinking GPT 5.1 Thinking Fast GPT 5.2 ↳ GPT 5.2 (12-11 snapshot) GPT 5.2 Fast GPT 5.2 Pro ↳ GPT 5.2 Pro (12-11 snapshot) GPT 5.3 Codex Fast GPT 5.4 ↳ GPT 5.4 (03-05 snapshot) GPT 5.4 Fast GPT 5.4 Mini ↳ GPT 5.4 Mini (03-17 snapshot) GPT 5.4 Mini Fast GPT 5.4 Nano ↳ GPT 5.4 Nano (03-17 snapshot) GPT 5.4 Pro ↳ GPT 5.4 Pro (03-05 snapshot) GPT 5.5 ↳ GPT 5.5 (04-23 snapshot) GPT 5.5 Cyber GPT 5.5 Fast GPT 5.5 Pro ↳ GPT 5.5 Pro (04-23 snapshot) GPT 5.6 Cyber GPT 5.6 Luna Fast GPT 5.6 Sol Fast GPT 5.6 Terra Fast GPT 6 Luna Fast GPT 6 Sol Fast GPT 6.1 Sol Fast GPT Chat (latest) GPT Rosalind Discovery GPT Rosalind Research GPT-3.5 Turbo 16k GPT-5 Codex GPT-5.1-Codex GPT-5.1-Codex-Max GPT-5.1-Codex-Mini GPT-5.2 Chat ↳ GPT 5.2 Chat (latest alias) GPT-5.2-Codex GPT-5.6 Luna GPT-5.6 Luna Pro GPT-5.6 Sol GPT-5.6 Sol Pro GPT-5.6 Terra Pro GPT-6 Astra Fast GPT-6 Astra Pro GPT-6 Luna Pro GPT-6 Sol GPT-6 Sol Pro GPT-6.1 Sol Pro o1 o1 Pro o3 Fast o3 Mini o3 Mini High o3 Pro o4 Mini o4 Mini High
API price OpenAI · 1.1M token context · 1 seller, checked 24 Oct, 18:17 UTC
Other versions: newer: GPT 6 Luna Fast from $0.20 / $1.00. Compare versions
Input, per 1M tokens
$0.40
Output, per 1M tokens
$2.40
Sold by Cheaper Inference .
The only price here comes from Cheaper Inference , a seller we have not verified (our read ). Test it on your own prompts before you rely on it.
Versions Version What it is Sellers From, in / out per 1M GPT 5.6 Luna Fast this page gpt-5.6-luna-fast Main listing 1 $0.40 / $2.40 GPT 6 Luna Fast gpt-6-luna-fast Newer generation 1 $0.20 / $1.00
Why there are several: the undated name can move to a newer build when the developer updates it, while a dated snapshot is meant to stay fixed, which can suit pipelines that need repeatable behaviour; an experimental build tests new features. Sellers price each version separately and not every seller offers every version, so check a seller's own docs for the build it serves.
Cost calculator: where to buy, and what it costs you
Pick a use case, a volume and a provider. Monthly figures assume 30 days.
Monthly cost with Cheaper Inference
$41.94
$0.0014 per request · 30,000 requests a month
$12.60 $0.54 $28.80
Same workload on other OpenAI models, at their cheapest provider
Spotted a wrong or outdated price? Report it and we fix it at the next update.
Test a seller of this model with your own key, on your own machine.
Context window 1.1M1,050,000 tokens
Cached input from $0.040per 1M tokens
Last checked 24 Oct, 18:17 UTC Price history Cheapest standard price per 1M tokens, recorded every 6 hours since 16 Oct 2026.
$0.00 $1.34 $2.69 16 Oct 24 Oct Every price change this month →
More from OpenAI: GPT-5.6 Terra $2.00 · GPT-5.6 Luna $0.20 · GPT-5.6 Luna Pro $0.20