GPT-5.1
OpenAI · model · context window 400,000 tokens.
Pricing (per 1M tokens)
Specifications
Intelligence & value
MeasuredWorth it? DeepSeek V4 Flash matches or beats GPT-5.1 on the overall Arena and costs about $35.00/month versus $687.50/month at 100,000 calls — roughly $652.50/month cheaper.
Intelligence scores are community Arena ratings from LMArena / arena.ai, used under CC BY 4.0. Snapshot last refreshed 28 July 2026. Scores are a relative signal, not an absolute measure of capability. A Measured score was voted on directly; an Estimated score is inherited from an identical base model (a regional/creator-prefixed hosting duplicate). See our methodology.
Estimate cost with GPT-5.1
GPT-5.1 is pre-selected below. Enter your token counts and volume to see the cost per request, per day and per month — then switch models to compare.
Results update automatically as you type.
- Input cost
- $0.00125
- Output cost
- $0.00500
- Per request
- $0.00625
- Per day
- $6.25
- Per month
- $187.50
Source: auto-discovery (models.dev). Prices are re-checked daily against the provider’s official pricing; this rate was last changed on 19 July 2026. A recent date here just means the price is still current, not that it moved.