Grok 4.5 vs GPT-5.6 Sol API Price Comparison
Prices updated: ·52 quotes
As of : At official rates, Grok 4.5 is $2.0000/1M input tokens and GPT-5.6 Sol is $4.0000 — Grok 4.5 is ~50% cheaper than GPT-5.6 Sol. Via relay providers, the lowest Grok 4.5 rate is $0.0276 (Qingfengge API) and GPT-5.6 Sol is $0.0138 (ShannonAPI). Context windows: Grok 4.5 500K, GPT-5.6 Sol 1050K. Grok 4.5 and GPT-5.6 Sol support image input. 52 provider quotes tracked (Grok 4.5: 20, GPT-5.6 Sol: 32), updated daily.
Grok 4.5Frontier
Official
$2.0000
/ 1M tokens
Best Price
$0.0276
/ 1M tokens
20 providers · 500K Context · 👁 Vision
GPT-5.6 SolFrontier
Official
$4.0000
/ 1M tokens
Best Price
$0.0138
/ 1M tokens
32 providers · 1050K Context · 👁 Vision
At official prices, Grok 4.5 is ~50% cheaper. At the best relay price, GPT-5.6 Sol is ~50% cheaper.
Price Comparison
| Grok 4.5 | GPT-5.6 Sol | |
|---|---|---|
| Official input / 1M tokens | $2.0000 ✓ | $4.0000 |
| Official output / 1M tokens | $6.0000 ✓ | $20.0000 |
| Cheapest input / 1M tokens | $0.0276 | $0.0138 ✓ |
| Cheapest output / 1M tokens | $0.0828 | $0.0828 |
| providers | 20 | 32 |
| Context | 500K | 1050K |
| Vision | ✓ | ✓ |
Grok 4.5 — All Providers
Detail page →GPT-5.6 Sol — All Providers
Detail page →Frequently Asked Questions
Which is cheaper, Grok 4.5 or GPT-5.6 Sol?
At official price, Grok 4.5 is cheaper by ~50%. At the best relay price, GPT-5.6 Sol with a ~50% difference.
What context window do Grok 4.5 and GPT-5.6 Sol support?
Grok 4.5 has a 500K token context window; GPT-5.6 Sol has 1050K tokens.
Do Grok 4.5 and GPT-5.6 Sol support image input?
Grok 4.5 supports image input; GPT-5.6 Sol supports image input.
What is the cheapest way to access Grok 4.5 or GPT-5.6 Sol?
Grok 4.5's lowest input price is $0.0276/1M tokens (Qingfengge API). GPT-5.6 Sol's is $0.0138/1M tokens (ShannonAPI). Relay providers typically offer lower prices with different SLA terms.
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