llmgauge

OpenAI · model

GPT-5 Nano

$0.05/1M in · $0.40/1M out · 400K context. That's cheaper than 80% of the 298 models we track, by output price. Here's what it costs, how its price has moved, and where it fits.

output price · per 1M tokens
$0.40
input $0.05/1M · list
Context
400K
Input / 1M
$0.05
Output / 1M
$0.40
Modality
text + image + file
Provider
OpenAI
Tokenizer
GPT

Snapshot · source: provider list ↗ · how we measure →

cost at a typical workload
$55.00 / mo

For 1,500 input + 500 output tokens across 200,000 requests/month. That's 9.2× the cheapest tracked option (Ling-2.6-flash, $6.00/mo).

Tune the workload in the calculator →

output price history
output / 1M

2026-06-14 → 2026-06-15. Full history →

Where it fits

  • High-volume, cost-sensitive work — at $0.40/1M output it sits in the cheapest quarter of tracked models.
  • Long inputs — a 400K-token window holds roughly 600 pages of text at once.
  • Multimodal prompts — accepts image input alongside text.
  • Input-heavy jobs like summarization and RAG — input is cheap at $0.05/1M, and these read far more than they write.

Watch for

    These notes are derived from price, context and modality — structural facts, not measured quality. Measured cost-to-finish-a-task lives on the real-cost index.

    Related models

    GPT-4.1 Nano OpenAI · $0.40/1M out · 1.0M gpt-oss-safeguard-20b OpenAI · $0.30/1M out · 131K GPT-4o-mini Search Preview OpenAI · $0.60/1M out · 128K GPT-4o-mini (2024-07-18) OpenAI · $0.60/1M out · 128K Qwen3 8B Qwen · $0.40/1M out · 131K GLM 4.7 Flash Z.AI · $0.40/1M out · 203K

    See how the leading models compare head-to-head →

    How to read GPT-5 Nano's pricing

    Two numbers decide most of the bill: $0.05/1M for input (everything you send — prompt, context, attachments) and $0.40/1M for output (everything it generates, including hidden reasoning tokens). Output is priced 8.0× the input rate here, so the shape of your workload — how much it reads versus writes — matters as much as the headline figure. This is the provider's first-party list price, reconciled against the routed market each run.

    Frequently asked questions

    How much does GPT-5 Nano cost per million tokens?

    GPT-5 Nano is priced at $0.05 per 1M input tokens and $0.40 per 1M output tokens (first-party list price) as of the 2026-06-15 snapshot. Output is the figure that usually drives the bill. Enter your own token volumes in the cost calculator for a monthly estimate.

    What is GPT-5 Nano's context window?

    GPT-5 Nano has a 400K-token context window — roughly 600 pages of text. Prompt, attachments, conversation and the model's own output all share that budget, and every token you send is billed at the input rate.

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