OpenAI route
gpt-6-astra
GPT-6 Astra API access.
OpenAI's current flagship. $10 input and $50 output per 1M tokens at or below 272K prompt tokens; above that cliff the whole request bills $20 / $75. Cache reads are $0.80 per 1M, and $1.60 above 272K. See the GPT-6 Astra API pricing notes.
Input / 1M tokens
$10.00
Output / 1M tokens
$50.00
Cached input / 1M tokens
$0.80
Context window
922K
Provider
OpenAI
Workload calculator
Put the token rate into context.
These examples apply the published input and output rates directly. Actual cost follows the exact tokens your client sends and the model returns.
This route is the 62nd cheapest of 63 comparable text models and cheaper than 0 on the same key. Its context window ranks 43rd of 63.
Short request
$0.15
10K input + 1K output
Agent turn
$1.50
100K input + 10K output
Exact token billing
No request minimum
One model ID change
OpenAI compatible
Long-context threshold
Rate changes after 272K.
Long input / 1M
$20.00
Long output / 1M
$75.00
2.0× more on input than the base rate. The threshold applies per request, not per conversation.
Cost neighbourhood
Nearby routes, same workload.
Every comparison uses the same 100K-input / 10K-output turn. Changing route is a one-line model ID edit.
Price does not measure task quality. For generation routes, see GPT Image 2.
First request
Route it in one call.
Use any OpenAI SDK or tool. Keep the request shape, point the base URL at RouterPlex, and set the model ID shown here.
Read the quickstartcurl https://api.routerplex.com/v1/chat/completions \-H "Authorization: Bearer $ROUTERPLEX_API_KEY" \-H "Content-Type: application/json" \-d '{"model": "gpt-6-astra","messages": [{"role": "user", "content": "Hello!"}]}'
Route notes
Questions before production traffic.
01How much does the GPT-6 Astra API cost?+
Through RouterPlex, GPT-6 Astra costs $10.00 per 1M input tokens and $50.00 per 1M output tokens — the vendor list price with 0% markup, billed per token from a prepaid balance you top up from $5. Cached input tokens are billed at $0.80 per 1M instead of the full input rate, which is most of the prompt on a repeated agent or coding loop. Base rate applies at or below 272K prompt tokens. Prompts above 272K are billed at $20 input / $75 output per 1M tokens for the whole request. Cache reads are $0.80 per 1M at or below 272K and $1.60 per 1M above that. OpenAI publishes $1 per 1M cached input.
02What does one GPT-6 Astra agent turn cost?+
A 100K-token input with a 10K-token reply costs about $1.50 on GPT-6 Astra. That makes it the 62nd cheapest of 63 comparable text models on RouterPlex, roughly 125.0× the cost of the cheapest option (Muse Spark 1.2 Contributor).
03What is a cheaper alternative to GPT-6 Astra?+
Claude Opus 5 from Anthropic is the closest cheaper model on RouterPlex — $0.75 per agent turn against $1.50 for GPT-6 Astra, at $5.00/1M input and $25.00/1M output. Both run on the same key and the same endpoint, so switching is a one-line model ID change.
04What is the context window of GPT-6 Astra?+
GPT-6 Astra supports a 922K token context window on RouterPlex, the 43rd largest of the 63 models that publish one.
05Can I use GPT-6 Astra with the OpenAI SDK?+
Yes. RouterPlex serves GPT-6 Astra through an OpenAI-compatible endpoint at https://api.routerplex.com/v1 — point any OpenAI SDK or tool at that base URL with your RouterPlex key and set model to "gpt-6-astra".
Provider family
More from OpenAI.
Deploy this route
Put GPT-6 Astra behind one key.
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