Claude Sonnet 4.6 vs GPT-6 Astra
Price, context window & benchmark comparison
VS
Compare different models
Verdict: Claude Sonnet 4.6 is 3.3× cheaper than GPT-6 Astra on a typical 3:1 input/output mix. GPT-6 Astra scores higher on the Artificial Analysis Intelligence Index (52.7 vs 30.1). GPT-6 Astra has the larger context window (1.1M vs 1M).
| Claude Sonnet 4.6 | GPT-6 Astra | |
|---|---|---|
| Input price / 1M | $3.00 | $10.00 |
| Output price / 1M | $15.00 | $50.00 |
| Blended price (3:1) | $6.00 | $20.00 |
| Cached input / 1M | $0.30 | $1.00 |
| Context window | 1M | 1.1M |
| Max output | 128K | 128K |
| Intelligence index | 30.1 | 52.7 |
| Coding index | 63 | 76.9 |
| Providers | — | 6 |
| Best provider uptime (30m) | — | 100.0% |
| Vision input | Yes | Yes |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Released | 2026-02-17 | 2026-09-04 |
| Retirement | — | — |
Cost calculator
FAQ
Which is cheaper, Claude Sonnet 4.6 or GPT-6 Astra?
Claude Sonnet 4.6 is 3.3× cheaper than GPT-6 Astra on a typical 3:1 input/output mix.
Claude Sonnet 4.6 vs GPT-6 Astra: which has a bigger context window?
Claude Sonnet 4.6: 1,000,000 tokens. GPT-6 Astra: 1,050,000 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: Claude Sonnet 4.6 ≈ $13,500, GPT-6 Astra ≈ $45,000.
More comparisons
Claude Sonnet 4.6 vs GLM 5.3 PrimeClaude Sonnet 4.6 vs Qwen3.8 Max PrimeClaude Sonnet 4.6 vs Command A+Claude Sonnet 4.6 vs GPT-6 Luna ProClaude Sonnet 4.6 vs GPT-6 LunaClaude Sonnet 4.6 vs GPT-6 Sol ProClaude Sonnet 4.6 vs GPT-6 SolClaude Sonnet 4.6 vs Claude Opus 5.5Claude Sonnet 4.6 vs MiMo-V2.6-Pro-UltraSpeedClaude Sonnet 4.6 vs MiMo-V2.6-FlashClaude Sonnet 4.6 vs Grok 4.7Claude Sonnet 4.6 vs Qwen3.8 Omni FlashClaude Sonnet 4.6 vs GLM 5.3 FlashXClaude Sonnet 4.6 vs DeepSeek V4.1 FlashClaude Sonnet 4.6 vs GPT-6 Astra ProClaude Sonnet 4.6 vs Qwen3.8 Max (0902)GPT-6 Astra vs GLM 5.3 PrimeGPT-6 Astra vs Qwen3.8 Max PrimeGPT-6 Astra vs Command A+GPT-6 Astra vs GPT-6 Luna ProGPT-6 Astra vs GPT-6 LunaGPT-6 Astra vs GPT-6 Sol ProGPT-6 Astra vs GPT-6 SolGPT-6 Astra vs Claude Opus 5.5