GPT-6 Astra vs GPT-6.1 Sol
A side-by-side of live API prices, providers, speed, usage and benchmarks. No verdict: the right choice depends on your workload.
GPT-6 Astra costs $10.00 per 1M input and $50.00 per 1M output tokens at the standard tier, via OpenAI; GPT-6.1 Sol costs $2.00 and $10.00, via OpenAI. At a 3:1 input:output mix, GPT-6 Astra is 5.00× the price of GPT-6.1 Sol.
Why these two are compared
Two tiers of OpenAI’s GPT-6 series: GPT-6 Astra is the flagship, GPT-6.1 Sol is positioned below it. The comparison is about choosing a tier within one vendor, so price per task and speed matter more than the provider list.
Side by side
| Measure | GPT-6 Astra | GPT-6.1 Sol |
|---|---|---|
| Developer | OpenAI | OpenAI |
| Released | 2026-09-04 | 2026-09-29 |
| Standard price, input / output per 1M | $10.00 / $50.00 | $2.00 / $10.00 |
| Blended price (3:1) | $20.00 | $4.00 |
| Cheapest standard provider | OpenAI | OpenAI |
| Cache read per 1M | $1.00 | $0.10 |
| Providers at the standard tier | 3 | 3 |
| Context window (tokens) | 1,050,000 | 1,050,000 |
| Max output (tokens) | 128,000 | 128,000 |
| Input modalities | file, image, text | file, image, text |
| Long-prompt pricing | Prompts over 272,000 tokens: $20.00 input / $75.00 output per 1M tokens | Prompts over 272,000 tokens: $4.00 input / $15.00 output per 1M tokens |
| Fastest endpoint | 114 tok/sOpenAI (Ultrafast tier) | 56 tok/sOpenAI (Fast tier) |
| Lowest latency | 1.86 sOpenAI (Ultrafast tier) | 2.19 sOpenAI (Fast tier) |
| OpenRouter tokens (2026-10-16) | 61.76B | 293.83B |
| AA intelligence | 52.7 | 51.8 |
| AA coding | 76.9 | Not reported |
| AA agentic | 51.0 | Not reported |
“Not reported” means the source publishes no value. AA scores are the Artificial Analysis indexes reported through OpenRouter (CC BY 4.0), not SF·SIX measurements.
Cost for three example workloads
| Workload | GPT-6 Astra / month | GPT-6.1 Sol / month |
|---|---|---|
| Support chatbot50,000 requests × 1,500 in / 400 out tokens | $1,750.00 | $350.00 |
| RAG / research assistant20,000 requests × 8,000 in / 700 out tokens | $2,300.00 | $460.00 |
| Batch summarisation10,000 requests × 10,000 in / 500 out tokens | $1,250.00 | $250.00 |
Standard headline prices; caching and long-context surcharges not included. Price your own workload.
GPT-6 Astra providers
| Provider and terms | Input / 1M | Output / 1M | Throughput | Latency |
|---|---|---|---|---|
| Azure | $10.00 | $50.00 | 33 tok/s | 6.25 s |
| OpenAI | $10.00 | $50.00 | 39 tok/s | 3.30 s |
| Amazon Bedrockus-west-2 region | $11.00 | $55.00 | Not reported | Not reported |
| AzureUS region | $11.00 | $55.00 | 32 tok/s | 3.05 s |
| OpenAIFast tier | $20.00 | $100.00 | 29 tok/s | 3.33 s |
| OpenAIUltrafast tier | $60.00 | $300.00 | 114 tok/s | 1.86 s |
| OpenAIFlex tier | $5.00 | $25.00 | 61 tok/s | 2.66 s |
GPT-6.1 Sol providers
| Provider and terms | Input / 1M | Output / 1M | Throughput | Latency |
|---|---|---|---|---|
| Azure | $2.00 | $10.00 | 26 tok/s | 12.8 s |
| OpenAI | $2.00 | $10.00 | 37 tok/s | 4.10 s |
| Amazon Bedrockus-east-1 region | $2.20 | $11.00 | 53 tok/s | 2.21 s |
| AzureEU region | $2.20 | $11.00 | 27 tok/s | 3.37 s |
| AzureUS region | $2.20 | $11.00 | 27 tok/s | 3.02 s |
| OpenAIFast tier | $4.00 | $20.00 | 56 tok/s | 2.19 s |
| OpenAIUltrafast tier | $12.00 | $60.00 | Not reported | Not reported |
| OpenAIFlex tier | $1.00 | $5.00 | 52 tok/s | 3.13 s |
Related comparisons
Sources and method
Prices are USD per 1M tokens at the standard service tier in the default region: the cheapest qualifying provider per model, with flex, batch, priority and fast endpoints and unusually low outliers never used as the headline. “Blended” weights input and output 3:1. Prices: OpenRouter, observed at the times on each model page. Speed: OpenRouter, previous 30 minutes. Usage: OpenRouter rankings, latest full UTC day (CC BY 4.0).