OpenAI · Pricing & cost calculator
OpenAI's heavy reasoning model. Expensive output tokens — use sparingly.
Input tokens
$0.01500
per 1,000 tokens
Output tokens
$0.06000
per 1,000 tokens
Context window
200,000
tokens max
Prices sourced from OpenAI's public API rate card. Last reviewed April 2026.
Drag the sliders. The math runs in your browser.
Per request
$0.052500
at 1,500/500 tokens
Monthly spend
$525
10,000 requests × $0.052500
Could save ~80% with a similar-quality alternative
Same workload at 1,500/500 tokens × 10,000 req/month: $525 → $105. 5× cheaper input, 5× cheaper output.
TrackCost's gateway auto-detects which requests are safe to route to the cheaper model and flags the ones that need o1's full capability. You stay in control — we surface the opportunity.
o1 costs $0.01500 per 1,000 input tokens and $0.06000 per 1,000 output tokens as of the current OpenAI API pricing.
o1-mini is significantly cheaper than o1 (5× cheaper input, 5× cheaper output) and often works fine for tasks that don't need o1's full capability. TrackCost automatically suggests model downgrades where safe.
The three highest-leverage ways: (1) route requests to a cheaper model where possible, (2) cache identical requests so you don't pay twice for the same response, (3) set hard monthly budgets that block requests when exceeded. TrackCost automates all three at the gateway layer.
o1 supports up to 200,000 tokens of context. For comparison with other models, use the TrackCost savings calculator.