OpenAI › GPT-6 Astra › Pricing
$10 / $50per 1M tokens in / out
$1cache read · −90%
$1.54per task at medium?
#49on OpenRouter by tokens · 419.3B / week
Price sheetper 1M tokens
| Input | $10 | list |
| Output | $50 | |
| Cache read | $1 | −90% vs input |
| Cache write | $12.50 | +25% vs input |
| Context · max output | 1.1M · 128K | tokens |
Cost per task by effort?
low$0.8249.2
mediumAPI default$1.5452.7
high$1.7353.1
xhigh$2.3154.6
max$3.2654.7
per taskHumanity's Last Exam
Same price per token at every effort; the bill grows with reasoning tokens. max costs 2.1× medium for +1.9 points.
Where to buy5 providers · per 1M tokens
| Provider | Input | Output | Context |
|---|---|---|---|
| Azure | $10 | $50 | 1.1M |
| lab-openai | $10 | $50 | — |
| OpenAIlab | $10 | $50 | 1.1M |
| openai-media | $10 | $50 | — |
| Amazon Bedrock | $11 | $55 | 1.1M |
In OpenAI's line-upper 1M in / out
| GPT Rosalind Research | $5 / $25 | −50% |
| GPT Chat Latest | $5 / $30 | −44% |
| Chat Latest | $5 / $30 | −44% |
| GPT-6 Astra | $10 / $50 | this model |
| GPT-5.6 Cyber | $12.50 / $75 | +41% |
| GPT-5 Pro | $15 / $120 | 2.1× |
| GPT-5.2 Pro | $21 / $168 | 2.9× |
Cheaper for the same workvs GPT-6 Astra at medium
| GPT-6.1 Sol max | -53% | score +5% | $0.72 |
| Claude Opus 5.5 medium | -13% | score +3% | $1.34 |
| GPT-6 Sol max | -32% | score -4% | $1.04 |
| Claude Sonnet 5.5 high | -43% | score -6% | $0.88 |
| MiMo v2.6 Pro thinkingOpen | -91% | score -7% | $0.13 |
Pricing questions
How much does GPT-6 Astra cost?›
$10 per 1M input tokens and $50 per 1M output tokens. Cached input is $1. One Intelligence Index task costs about $1.54 at the default effort.
Is GPT-6 Astra free to use?›
There is no free API tier.
How much does prompt caching save?›
Cache reads cost $1 per 1M, 90% below the input price. Writing to the cache costs $12.50 per 1M.
How does effort change the price?›
The price per token is the same at every effort. Higher effort spends more reasoning tokens: a task costs $0.82 at low, $1.54 at medium, $1.73 at high, $2.31 at xhigh, $3.26 at max.
What is a cheaper alternative to GPT-6 Astra?›
GPT-6.1 Sol at max effort costs -53% per task with a score +5% on Humanity's Last Exam.