Skip to content
NEWGPT-6 Astra is live — OpenAI's next-generation flagship at list price ($10 / $50 per 1M tokens, cached reads $1), ready for Codex CLIView pricing
HopBase
← Back to blog

GPT-6 Astra API Now Available: $10 / $50 List Price, Codex CLI Ready | HopBase

HopBase Sep 5, 2026 6 min read
GPT-6 Astra API Now Available: $10 / $50 List Price, Codex CLI Ready | HopBase

OpenAI's next-generation flagship, GPT-6 Astra (model ID gpt-6-astra), is now live on HopBase. It is available today in the Codex Plus and Codex Pro groups — if you already have a key, just switch the model name.

How to call it

  • Native on both Responses and Chat Completions: /v1/responses and /v1/chat/completions both work directly, with no changes to the OpenAI SDK.
  • Codex CLI works as-is: point the model name at gpt-6-astra; no base URL or auth changes needed.
  • Phased rollout: OpenAI is still releasing GPT-6 in batches, so actual availability per group is whatever GET /v1/models returns — check it before you call, rather than discovering a 404.

Pricing: at OpenAI list price

Per 1M tokensGPT-6 AstraGPT-5.6 Sol
Input$10$5
Cached input$1$0.50
Output$50$30

Cached reads cost one tenth of the input price, so agent loops and long conversations — workloads that re-read the same prefix over and over — save the most. Billing is list price times actual usage, visible in real time in the console; for enterprise volume, reach out through the pricing page.

Recommendation: prefer streaming

In our measurements, streaming calls (stream=true) return the first token in a steady 2–4 seconds. Non-streaming requests currently vary widely on the upstream side (2 seconds to 2 minutes in our tests), and tail requests can hit CDN edge timeouts.

Chat, agent and Codex workloads already stream, so they are unaffected. If your backend wraps non-streaming calls, we recommend switching to streaming and aggregating on your side for now. We are tracking upstream behaviour.

Three-minute integration

curl https://api.hop-base.com/v1/responses \
  -H "Authorization: Bearer sk-your-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-6-astra",
    "input": "Hello, introduce yourself",
    "stream": true
  }'

Full integration steps for Chat Completions and Codex CLI are in the model reference docs. If you already have a key, switching the model name to gpt-6-astra is all it takes.

Product