Grok 4 vs GPT-5.5 API Price Comparison
Prices updated: ·109 quotes
As of : At official rates, Grok 4 is $1.2500/1M input tokens and GPT-5.5 is $5.0000 — Grok 4 is ~75% cheaper than GPT-5.5. Via relay providers, the lowest Grok 4 rate is $0.0083 (TreeRouter) and GPT-5.5 is $0.0483 (Zhiyuan AI). Context windows: Grok 4 1000K, GPT-5.5 1050K. Grok 4 and GPT-5.5 support image input. 109 provider quotes tracked (Grok 4: 76, GPT-5.5: 33), updated daily.
Grok 4Frontier
Official
$1.2500
/ 1M tokens
Best Price
$0.0083
/ 1M tokens
76 providers · 1000K Context · 👁 Vision
GPT-5.5Frontier
Official
$5.0000
/ 1M tokens
Best Price
$0.0483
/ 1M tokens
33 providers · 1050K Context · 👁 Vision
At official prices, Grok 4 is ~75% cheaper. At the best relay price, Grok 4 is ~83% cheaper.
Price Comparison
| Grok 4 | GPT-5.5 | |
|---|---|---|
| Official input / 1M tokens | $1.2500 ✓ | $5.0000 |
| Official output / 1M tokens | $2.5000 ✓ | $30.0000 |
| Cheapest input / 1M tokens | $0.0083 ✓ | $0.0483 |
| Cheapest output / 1M tokens | $0.0207 ✓ | $0.2897 |
| providers | 76 | 33 |
| Context | 1000K | 1050K |
| Vision | ✓ | ✓ |
Grok 4 — All Providers
Detail page →GPT-5.5 — All Providers
Detail page →Frequently Asked Questions
Which is cheaper, Grok 4 or GPT-5.5?
At official price, Grok 4 is cheaper by ~75%. At the best relay price, Grok 4 with a ~83% difference.
What context window do Grok 4 and GPT-5.5 support?
Grok 4 has a 1000K token context window; GPT-5.5 has 1050K tokens.
Do Grok 4 and GPT-5.5 support image input?
Grok 4 supports image input; GPT-5.5 supports image input.
What is the cheapest way to access Grok 4 or GPT-5.5?
Grok 4's lowest input price is $0.0083/1M tokens (TreeRouter). GPT-5.5's is $0.0483/1M tokens (Zhiyuan AI). Relay providers typically offer lower prices with different SLA terms.
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