GPT/Fast / Budget

GPT 5 Nano

GPT 5 Nano is GPT's fastest and most affordable model, priced at $0.05/MTok input and $0.40/MTok output with a 272K context window. Backfilled on 2026-09-23. Prices confirmed by the provider pricing page and the LiteLLM cross-check. Release date not published in a machine-readable source. Not yet benchmarked, so never recommended.

Input $/MTok

$0.05

Output $/MTok

$0.40

Context window

272K

Cache read discount

90% off

GPT 5 Nano pricing breakdown

RateInput $/MTokOutput $/MTok
Standard$0.05$0.40
Cached read (90% off input)$0.01-
Cached write (no surcharge)$0.05-
Batch (50% off)$0.03$0.20

All rates in USD per million tokens. Prices verified against provider documentation.

GPT 5 Nano task benchmarks

Confidence scores (0-100) and cross-provider rank for each task type. Rank 1 is best across all 72 models.

Not benchmarked. The third-party benchmark source used for confidence scores does not cover GPT models yet. Scores will appear here once independent benchmarks are published.

GPT 5 Nano cost by use case

Estimated cost per API call using default token counts for each workload.

Use caseInput tokensOutput tokensCost / call
Code Generation2,0004,000$0.001700
Unit Test Generation3,0005,000$0.002150
SQL Generation1,5001,000$0.000475
API Generation3,0006,000$0.002550
Code Refactoring4,0004,000$0.001800
Code Review5,0002,000$0.001050
PR Review8,0003,000$0.001600
Security Review6,0002,500$0.001300
Bug Detection5,0002,000$0.001050
Document Summarization10,0001,000$0.000900
PDF Summarization15,0001,500$0.001350
Meeting Notes8,0002,000$0.001200

Monthly cost projections

Projected monthly spend at different call volumes, using code generation as a representative workload (2,000 input / 4,000 output tokens per call).

Calls / monthWithout cachingWith caching (90% read discount)
1K$1.7$1.64
10K$17$16.37
100K$170$163.7
500K$850$818.5
1M$1,700$1,637

Caching estimate assumes 70% of input tokens are cache reads. Your actual cache hit rate will depend on prompt structure and reuse.

Fast / Budget alternatives to GPT 5 Nano

Same-tier models from other providers, sorted by input price.

ModelProviderInput $/MTokOutput $/MTokInput savings
Gemini 2.5 Flash-LiteGemini$0.10$0.40100% more
Gemini 3.1 Flash-LiteGemini$0.25$1.50400% more
Gemini 3.5 Flash-LiteGemini$0.30$2.50500% more
Gemini 2.5 FlashGemini$0.30$2.50500% more
Gemini 3 FlashGemini$0.50$3.00900% more
Gemini 3.6 FlashGemini$0.75$3.751400% more
Gemini 3.7 FlashGemini$0.75$3.751400% more
Gemini 3.8 FlashGemini$0.75$3.751400% more
Claude Haiku 4.5Claude$1.00$5.001900% more
Gemini Robotics ER 2Gemini$1.00$5.001900% more
Grok Build 0.1Grok$1.00$2.001900% more
Gemini 2.5 Computer UseGemini$1.25$10.002400% more
Gemini 3.5 FlashGemini$1.50$9.002900% more
Gemini Omni 1.1 FlashGemini$1.50$9.002900% more
Gemini Omni FlashGemini$1.50$9.002900% more

Other GPT models

Track your GPT 5 Nano spend

See exactly how much you spend on GPT 5 Nano and where you can save. Two-line wrapper install, no API keys shared.