Side-by-side comparison

Pick up to 4 models. Differences are what matter for picking.

Models
Spec
OpenAI
GPT-5 nano
Verified 2026-04-15
DescriptionUltra-fast, ultra-cheap GPT-5 variant for high-volume tasks.
Released2025-08-07
Knowledge cutoff2024-09
Context window400K
Max output128K
Input $/1M$0.050
Output $/1M$0.400
Speed tierUltra Fast
Reasoning2/5
Coding3/5
Multilingual3/5
Modalities in
Text
Modalities out
Text
Tool useYes
JSON modeYes
Open weightsNo
Best use cases
Chat
Summarization
Structured Output
Translation
Best personas
Startup
Consumer
Developer Tools
Weak at
  • · complex reasoning
  • · nuanced creative writing
Compliance
HIPAA-eligibleSOC 2GDPRISO 27001FedRAMP
Data policy
Sources
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