OpenAI

Large language model

GPT-6 Astra

FrontierProprietaryReasoningProprietary
Try in Playground →API Docs →
Input Price
$10.00
/M tokens
Output Price
$50.00
/M tokens
Intelligence
53
/100
Context
1.05M
tokens

Verdict

One9Founders Verdictfair

OpenAI's 3 Sep 2026 flagship. Tied #1 on Intelligence Index v4.3 (53) at $10/$50. Stronger token efficiency than GPT-5.6 Sol, weaker than Fable 5.1 on Agent Arena so far. Prompts above ~272K input bill at 2×.

“OpenAI's new ceiling. Priced like Fable, not like Sol.”

Best For

  • ✓hard reasoning
  • ✓ChatGPT-aligned UX
  • ✓long-horizon OpenAI stacks

Not Great For

  • ✗cost-sensitive volume
  • ✗workloads that already fit Sol/Terra

Startup Recommendation

Reserve Astra for the hardest jobs; keep Sol/Terra/Luna for volume.

Pricing Details

Input
$10.00
per 1M tokens
Output
$50.00
per 1M tokens
Cached Input
$1.00
per 1M tokens
Batch Input
$5.00
per 1M tokens

Capabilities

✓Function Calling
✓Structured Output
✓Vision
-Web Search
-Code Execution
-MCP
✗Audio Input
✗Video Input
✓Reasoning
✓Streaming
-Batch API
-Computer Use

Security & Compliance

✓SOC 2 Type II
✓GDPR
✓HIPAA
✓Enterprise SSO
✓Audit Logs

Training data policy: API data not used for training by default (opt-out / ZDR available)

DPDP Act (India): No India-resident inference by default. Use DPA + region controls.

Data residency: US, EU

India Availability

API available globally

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