OpenAI: GPT-6 Astra

OpenAI

openai/gpt-6-astra

GPT-6 Astra is OpenAI's flagship model for demanding end-to-end work. It is suited for advanced analysis, software engineering, deep research, scientific work, and document creation, with particular strengths in long-horizon...

Context

1.05M

Input /1M

$10.00

Output /1M

$50.00

Latency (TTFT)

1,017ms

Pricing

Per 1M tokens, in USD

Input$10.00

Output$50.00

Cache read$1.00

Cache write (5m)$12.50

Specs

file inimage intext intext outModerated

TokenizerGPT

Max output tokens128,000

Supported parameters

include_reasoningmax_completion_tokensmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstool_choicetools

Where it ranks on price

Against 157 routable models

Input$10.00

Cheaper than 4% of routable models

Output$50.00

Cheaper than 4% of routable models

Benchmarks

Intelligence52.8

Coding76.9

Agentic51.5

Composite scores (0–100) from Artificial Analysis, via OpenRouter's model catalog.

Call this model

Swap in your Mizan key — the request/response bodies are OpenAI chat-completion shaped.

cURL

curl https://api.app-mizan.com/v1/chat/completions \
  -H "Authorization: Bearer mizan_rt_..." \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-6-astra",
    "messages": [{ "role": "user", "content": "Say hi in five words." }]
  }'

Models

OpenAI: GPT-6 Astra

OpenAI

openai/gpt-6-astra

GPT-6 Astra is OpenAI's flagship model for demanding end-to-end work. It is suited for advanced analysis, software engineering, deep research, scientific work, and document creation, with particular strengths in long-horizon...

Context

1.05M

Input /1M

$10.00

Output /1M

$50.00

Latency (TTFT)

1,017ms

Pricing

Per 1M tokens, in USD

Input$10.00

Output$50.00

Cache read$1.00

Cache write (5m)$12.50

Specs

file inimage intext intext outModerated

TokenizerGPT

Max output tokens128,000

Supported parameters

include_reasoningmax_completion_tokensmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstool_choicetools

Where it ranks on price

Against 157 routable models

Input$10.00

Cheaper than 4% of routable models

Output$50.00

Cheaper than 4% of routable models

Benchmarks

Intelligence52.8

Coding76.9

Agentic51.5

Composite scores (0–100) from Artificial Analysis, via OpenRouter's model catalog.

Call this model

Swap in your Mizan key — the request/response bodies are OpenAI chat-completion shaped.

cURL

curl https://api.app-mizan.com/v1/chat/completions \
  -H "Authorization: Bearer mizan_rt_..." \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-6-astra",
    "messages": [{ "role": "user", "content": "Say hi in five words." }]
  }'