How much does gpt-5.1 cost?
gpt-5.1 costs $1.25 per million input tokens and $10 per million output tokens (January 2026).
Last updated: 2026-01
Pricing
Input
$1.25
per 1M tokens
Output
$10.00
per 1M tokens
Specifications
Context Window
128K
Tier
frontier
Capabilities
textcodereasoningvision
Compare gpt-5.1
Frequently Asked Questions
How much does gpt-5.1 cost?
gpt-5.1 costs $1.25 per million input tokens and $10 per million output tokens as of January 2026. For example, processing 1,000 tokens costs $0.001250 for input.
Is gpt-5.1 worth the price?
gpt-5.1 is a premium model best for complex tasks requiring highest quality. Balanced GPT-5 variant with excellent cost-performance.
What are alternatives to gpt-5.1?
Alternatives to gpt-5.1 include models from Anthropic (Claude), Google (Gemini). Compare pricing and capabilities on our AI Pricing page.
Cost Calculator
VolumeInput CostOutput Cost
1K tokens$0.0013$0.010
10K tokens$0.013$0.100
100K tokens$0.125$1.00
1M tokens$1.25$10.00
Prices based on official OpenAI documentation. Actual costs may vary.
Alternative Models
Last updated: 2026-01