GPT-6 Astra vs o3 Pro

Price, context window & benchmark comparison

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GPT-6 Astra

OpenAI
$10.00 / $50.00
Input / Output · per 1M tokens
VS
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o3 Pro

OpenAI
$20.00 / $80.00
Input / Output · per 1M tokens
Compare different models
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Verdict: GPT-6 Astra is 43% cheaper than o3 Pro on a typical 3:1 input/output mix. GPT-6 Astra has the larger context window (1.1M vs 200K).
GPT-6 Astrao3 Pro
Input price / 1M$10.00$20.00
Output price / 1M$50.00$80.00
Blended price (3:1)$20.00$35.00
Cached input / 1M$1.00
Context window1.1M200K
Max output128K100K
Intelligence index52.7
Coding index76.9
Providers6
Best provider uptime (30m)100.0%
Vision inputYesYes
ReasoningYesYes
Tool callingYesYes
Released2026-09-042025-06-10
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FAQ

Which is cheaper, GPT-6 Astra or o3 Pro?

GPT-6 Astra is 43% cheaper than o3 Pro on a typical 3:1 input/output mix.

GPT-6 Astra vs o3 Pro: which has a bigger context window?

GPT-6 Astra: 1,050,000 tokens. o3 Pro: 200,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: GPT-6 Astra ≈ $45,000, o3 Pro ≈ $80,000.

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