GPT-6 Astra
gpt-6-astraOpenAI's flagship GPT-6 model for the hardest reasoning, coding and agentic work. Long-context requests (above 272K input tokens) bill at $20 input / $75 output per 1M. Built by OpenAI.
Prices updated
Input price
$10
per 1M tokens · Standard
Output price
$50
per 1M tokens · Standard
Input limit
1.1M
tokens
Output limit
128K
tokens
Input formats
Output formats
GPT-6 Astra price history
2 price records since 9/25/2026
GPT-6 Astra cost calculator
$450/month
Standard pricing
Overview
What is GPT-6 Astra?
GPT-6 Astra is a text & reasoning and code & slms and vision model from OpenAI. OpenAI's flagship GPT-6 model for the hardest reasoning, coding and agentic work. Long-context requests (above 272K input tokens) bill at $20 input / $75 output per 1M. Its 1.1M context window and $10 input price make it a candidate for quality-focused production applications.
Benchmarks
GPT-6 Astra benchmarks & speed
How GPT-6 Astra scores on standardized evaluations, and where it lands among every model we track.
52.7
Intelligence Index
60tok/s
Output speed
1384
DesignArena Elo
Reasoning
GPQA Diamond
96.1%
Graduate-level scientific reasoning · top 1%
HLE
54.7%
Humanity's Last Exam · top 3%
Coding
SciCode
56.5%
Python for scientific computing · top 22%
Latency & design
- Time to first token
- 287.74s
- DesignArena win rate
- 64.8%
- Design battles judged
- 6,939
Independent scores from Artificial Analysis and DesignArena · updated 10/8/2026. Higher is better; ranks compare against every model we track with that score.
Rates
GPT-6 Astra pricing
Pricing is based on token usage. Provider-specific caching, batch, regional, and tool charges may affect the final cost.
Input · Standard
$10
Per 1M tokens
Cached input · Standard
$1.00
Per 1M tokens
Capabilities
GPT-6 Astra Tools
Tools available when using GPT-6 Astra through supported provider APIs.
Function calling
Supported
Structured outputs
Supported
JSON mode
Supported
Reasoning
Supported
Built-in web search
Not supported
Log probabilities
Not supported
Deterministic seed
Supported
Parallel tool calls
Not supported
Prompt caching
Supported
Where to run it
GPT-6 Astra API providers
6 providers serve GPT-6 Astra. Prices are per 1M tokens; uptime is the last 24 hours.
| Provider | Input | Output | Cached | Context | Uptime |
|---|---|---|---|---|---|
| OpenAI | $5.00 | $25 | $0.50 | 1.1M | 99.98% |
| Azure | $10 | $50 | $1.00 | 1.1M | 99.98% |
| OpenAI | $10 | $50 | $1.00 | 1.1M | 99.97% |
| Amazon Bedrock | $11 | $55 | $1.10 | 1.1M | 100% |
| Azure | $11 | $55 | $1.10 | 1.1M | 100% |
| OpenAI | $20 | $100 | $2.00 | 1.1M | 100% |
- Input
- $5.00
- Output
- $25
- Cached
- $0.50
- Context
- 1.1M
- Uptime
- 99.98%
- Input
- $10
- Output
- $50
- Cached
- $1.00
- Context
- 1.1M
- Uptime
- 99.98%
- Input
- $10
- Output
- $50
- Cached
- $1.00
- Context
- 1.1M
- Uptime
- 99.97%
- Input
- $11
- Output
- $55
- Cached
- $1.10
- Context
- 1.1M
- Uptime
- 100%
- Input
- $11
- Output
- $55
- Cached
- $1.10
- Context
- 1.1M
- Uptime
- 100%
- Input
- $20
- Output
- $100
- Cached
- $2.00
- Context
- 1.1M
- Uptime
- 100%
Strengths and limitations
Strengths
- Measured results (AA Intelligence 52.7 · DesignArena Elo 1384 · Arena Elo 1288 · MMLU-Pro 88.3%) position it for demanding production work.
- 1.1M context supports large documents, repositories and extended conversations.
- Supports text & reasoning and code & slms and vision workloads in one model.
Limitations
- Generated tokens cost 5× more than input tokens, which matters for verbose responses.
- Large context capacity does not guarantee consistent retrieval across the entire prompt.
- Arena Elo and MMLU-Pro are directional; test accuracy, latency and reliability on your own workload before committing.
Arena Elo, MMLU-Pro and pricing figures are illustrative; validate current vendor terms before purchase.
Same provider