Compare / head-to-head
GPT-6 Astravso3
GPT-6 Astra leads 4 of 4 shared benchmarks. o3 is 6x cheaper per token. GPT-6 Astra has the larger context window (1.1M tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
4 – 0
GPT-6 Astra leads
Cheaper per token
o3
6x cheaper, input + output
Larger context
GPT-6 Astra
1.1M tokens
Provider uptime (30d)
94.9367%
OpenAI
GPT-6 Astra
OpenAI · released 2026-09-03
textvision
Quality
Benchmark matrix
4 shared · 3 only GPT-6 Astra · 3 only o3| Benchmark | GPT-6 Astra | o3 | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 4 | ||||
| GPQA Diamond | 96% ↗ | 81.8% ↗epoch | +14.2 pt | GPT-6 Astra |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 93.7% ↗epoch | 33.3% ↗epoch | +60.4 pt | GPT-6 Astra |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 100% ↗epoch | 84.4% ↗epoch | +15.6 pt | GPT-6 Astra |
| SimpleQA Verified | 75.6% ↗epoch | 49.4% ↗epoch | +26.2 pt | GPT-6 Astra |
| Only GPT-6 Astra reports · 3 | ||||
| AutomationBench | 41.4% ↗ | not reported | — | — |
| FrontierMath Tier 4 v2 (Epoch AI run) | 97.6% ↗epoch | not reported | — | — |
| Terminal-Bench Science 0.1 | 64.6% ↗ | not reported | — | — |
| Only o3 reports · 3 | ||||
| SWE-bench Verified | not reported | 69.1% ↗ | — | — |
| AIME 2025 | not reported | 89.2% ↗matharena ⚠ | — | — |
| SWE-bench Verified (Epoch AI run) | not reported | 62.3% ↗epoch | — | — |
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is GPT-6 Astra minus o3 in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing
Side by side
Official pricing pages and model cards| Spec | GPT-6 Astra | o3 | Edge |
|---|---|---|---|
| Context window | 1.1M tokens | 200K tokens | GPT-6 Astra |
| Max output | 128K tokens | 100K tokens | GPT-6 Astra |
| Input price / 1M | $10 ↗ | $2 ↗ | o3 |
| Output price / 1M | $50 ↗ | $8 ↗ | o3 |
| Cached input / 1M | $1 ↗ | $0.5 ↗ | o3 |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $60 | $10 | o3 |
| Modalities | text · vision | text · vision | Tie |
| Released | 2026-09-03 | 2025-04-16 | — |
| Cited benchmark scores | 8 | 7 | — |
Reliability
OpenAI status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
GPT-6 Astra vs …
Models sharing the most benchmarksMore matchups
o3 vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
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