o3
List prices per 1M tokens, what provider caching gives back, and what the cheaper sibling costs for the same work.
Retires on 2026-12-11 (46 days) · announced 2026-06-11 · recommended replacement gpt-5.6-sol. TokenZero flags this model in audits and in
X-TokenZero-Warning on every request.$2input / 1M
$8output / 1M
$0.5cached input / 1M (75% off)
nonecache write / 1M (no write surcharge)
Same workload, cheaper sibling
100k requests/month of 2,000 input (1,500 static) and 300 output tokens, at list prices. "With cache" assumes the static prefix is served from the provider cache.
| Model | Per request | Per month | With cache | vs o3 |
|---|---|---|---|---|
| o3 (this model) | $0.0063999999999999994 | $640 | $415 | — |
| o4-mini | $0.00352 | $352 | $228.25 | 45% |
List prices. Cheaper models need an eval before swapping; TokenZero cascade routing is opt-in and advisory by default; an opt-in shadow parity monitor is coming.
Use it through TokenZero
OPENAI_BASE_URL=https://tokenzero.sh/v1 # keep your own key; cache formatting on, routing advisory
Free up to $500/month of routed spend; paid plans are a share of verified savings (Pro Cap: never more than $199/mo). Pricing