GPT-6.1 Terra vs o3
Price, context window & benchmark comparison
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Verdict: GPT-6.1 Terra is 43% cheaper than o3 on a typical 3:1 input/output mix. GPT-6.1 Terra has the larger context window (1.1M vs 200K).
| GPT-6.1 Terra | o3 | |
|---|---|---|
| Input price / 1M | $1.00 | $2.00 |
| Output price / 1M | $5.00 | $8.00 |
| Blended price (3:1) | $2.00 | $3.50 |
| Cached input / 1M | $0.05 | $0.50 |
| Context window | 1.1M | 200K |
| Max output | 128K | 100K |
| Intelligence index | 51.3 | — |
| Coding index | — | — |
| Providers | 7 | — |
| Best provider uptime (30m) | 100.0% | — |
| Vision input | Yes | Yes |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Released | 2026-10-26 | 2025-04-16 |
| Retirement | — | 2026-12-11 |
Cost calculator
FAQ
Which is cheaper, GPT-6.1 Terra or o3?
GPT-6.1 Terra is 43% cheaper than o3 on a typical 3:1 input/output mix.
GPT-6.1 Terra vs o3: which has a bigger context window?
GPT-6.1 Terra: 1,050,000 tokens. o3: 200,000 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: GPT-6.1 Terra ≈ $4,500, o3 ≈ $8,000.
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