GPT-5.4 vs Grok 4.3
List-price comparison · GPT-5.4 details · Grok 4.3 details
For a typical workload (100,000 requests / mo), Grok 4.3 costs 72% less — $250.00/mo vs $900.00/mo.
| GPT-5.4 | Grok 4.3 | |
|---|---|---|
| Input / 1M tokens | $2.50 | $1.25 |
| Output / 1M tokens | $15.00 | $2.50 |
| Typical request (1,200 in + 400 out) | $0.009 | $0.0025 |
| Context window | 1050k tokens | 1M tokens |
| Max output | 128k tokens | — |
| Tier | Flagship | Flagship |
| Provider | OpenAI | xAI |
Projected monthly cost
Rows open both models in the calculator — adjust volume and token counts there.
GPT-5.4
Excellent general-purpose reasoning and broad world knowledge, with strong performance on coding, math, and multi-modal (image + file) inputs.
Output tokens are priced well above input tokens, so verbose responses dominate cost — tight max-token limits and prompt caching matter.
Grok 4.3
Strong real-time knowledge via X/Twitter integration and competitive general reasoning at a lower price than other flagship models.
Smaller third-party ecosystem and fewer enterprise compliance certifications than OpenAI/Anthropic/Google offerings.
More comparisons
Vendor list rates · per-request examples assume 1,200 input + 400 output tokens.