Most capable model for complex professional work with reasoning support.
LLM Gateway routes requests to the best providers that are able to handle your prompt size and parameters.
Most capable model for complex professional work with reasoning support. You can access it through LLM Gateway's OpenAI-compatible API with automatic provider routing, fallback, and cost analytics.
Pricing for GPT-5.4 on LLM Gateway starts at $2.50 per million input tokens and $15.00 per million output tokens, depending on the provider. The pricing table above always reflects the current per-provider rates.
GPT-5.4 supports a context window of up to 1,050,000 tokens on its largest provider deployment.
GPT-5.4 is served by OpenAI, Azure through LLM Gateway. Requests are automatically routed to the best available provider, with fallback when a provider has issues.
Yes. GPT-5.4 supports both tool (function) calling and structured JSON outputs through LLM Gateway.
GPT-5.4 was released on March 6, 2026.
GPT-5.6 Sol
1,050,000 context$5.00 in / $30.00 out per 1M
GPT-5.6 Terra
1,050,000 context$2.00 in / $12.00 out per 1M
GPT-5.6 Luna
1,050,000 context$0.20 in / $1.20 out per 1M
GPT Realtime 2.1
128,000 context$4.00 in / $24.00 out per 1M
GPT Realtime 2.1 Mini
128,000 context$0.60 in / $2.40 out per 1M
GPT-5.5
1,050,000 context$5.00 in / $30.00 out per 1M