Today's price · per 1M tokens
Input
$1.10
per 1M tokens
Output
$4.40
per 1M tokens
Blended
$1.93
blended $/1M — 3:1 weighted input:output
Cached input
$0.550
50% of input — prompt caching
Price receipt
Historical price.This model is retired — withdrawn on — so the provider no longer sells it and its page can no longer confirm this number: a price for a model no longer on sale is unconfirmable by definition, not missing. The figures above are the last prices we recorded for this model, kept as a historical record rather than a live quote.
Overview
Reasoning model with extended thinking, priced for cost-conscious reasoning workloads until OpenAI shut it down on 2026-10-23.
Capabilities
struck through = not supportedBenchmark performance
accuracy % · higher is better- AA Intelligence Index: 11 (Artificial Analysis composite across reasoning, knowledge and coding evals)
- AA-Omniscience Index: -42.6 (−100–100)
- GDPval-AA v2: 237.5 ELO (Real-world work tasks, human baseline = 1000)
- LMSYS Chatbot Arena: 1348.1 ELO (Human preference)
- Ranks #51 of 100 benchmarked models by average score
- Ranks #138 of 194 comparably-measured models by percentile score, across 11 independent measurements
- Ranks #160 of 194 comparably-tested models by normalized performance per dollar
- Strongest at AIME 2025 — 86.5%, #15 of 35
214 tokens/sec output 14s latency to first token (TTFT)
Source: Vellum LLM Leaderboard · updated · See full rankings →
Specifications
- Provider
- OpenAI
- Context window
- 200K tokens
- Modality
- text
- Parameters
- Proprietary
- Open source
- No — proprietary
- Released
- Status
- Retired ended
- Last updated
- Tags
Availability verified: — per OpenAI's own deprecation notice