OpenAI
GPT-6 Astra pricing and benchmarks
OpenAI’s most capable model, built for the hardest end-to-end reasoning and coding work.
Input
$10.00
per 1M tokens
Cached input
$1.00
per 1M tokens
Output
$50.00
per 1M tokens
Capability index
166.3
#1 of 16 tracked
How capable is GPT-6 Astra?
GPT-6 Astra scores 166.3 on the Epoch Capabilities Index (confidence interval 163.0–171.9), ranking #1 of the 16 rated models we track. It is a best-value pick: no cheaper model we track scores higher.
| Benchmark | Tests | Score |
|---|---|---|
| GPQA Diamond | Science reasoning | 94.4% |
| FrontierMath (Tiers 1–3) | Advanced math | 93.7% |
| SimpleQA Verified | Factual accuracy | 75.6% |
| ARC-AGI-2 | Abstract reasoning | 95.0% |
| DeepSWE | Coding | 74.1% |
| APEX-Agents | Agentic work | 46.7% |
Source: Epoch AI (as “GPT-6 Astra”), best recorded result, CC BY 4.0. A dash means no published score. Compare all models
What GPT-6 Astra costs in practice
| Workload | Monthly cost |
|---|---|
Support chatbot 100,000 replies a month, ~1,500 input tokens (system prompt + history) and ~400 output tokens each. | $3,500 |
Document Q&A (RAG) 50,000 questions a month with ~8,000 tokens of retrieved context and ~600 output tokens each. | $5,500 |
Coding agent 10,000 agent steps a month, ~40,000 input tokens each (70% read from the prompt cache) and ~2,000 output tokens. | $2,480 |
Pricing details
- Cache writes are billed at $12.50 per 1M tokens.
- Fast mode costs 2x the standard rate; Flex costs half.
- Regional (data residency) endpoints add a 10% uplift.
Estimate your GPT-6 Astra bill
- GPT-6 AstraOpenAI$5,500/mo$0.11 / request
Standard-tier list prices. Long-context rates apply automatically where the provider publishes a threshold. Excludes cache-write surcharges, taxes, batch and volume discounts.