GPT-5.4 vs GPT Chat Latest
How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for GPT-5.4 and GPT Chat Latest.
GPT-5.4
GPT-5.4 is OpenAI’s latest frontier model, unifying the Codex and GPT lines into a single system. It features a 1M+ token context window (922K input, 128K output) with support for...
GPT Chat Latest
GPT Chat Latest points to OpenAI's stable API alias `chat-latest` that always resolves to the latest Instant chat model used in ChatGPT. As OpenAI rolls out new Instant model updates...
Technical Specifications
| Specification | GPT-5.4 | GPT Chat Latest |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Context Window | 1,050,000 tokens | 400,000 tokens |
| Agent Suitability | N/A | N/A |
| Time to First Token (TTFT) | N/A | N/A |
| Deployment Model | managed api | managed api |
| Production Stability | beta | stable |
| API Available | Yes | Yes |
| Released Date | 2026-03-05 | 2026-05-05 |
API Pricing Comparison
Input Price per Million Tokens
GPT-5.4
$2.50
GPT Chat Latest
$5.00
Output Price per Million Tokens
GPT-5.4
$15.00
GPT Chat Latest
$30.00
Want to test both models live?
Run side-by-side prompt prompts in our dynamic Sandbox. Check execution speeds, latency metrics, and compute actual costs in real-time.
Benchmark Performance Metrics
Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.
GPT-5.4 Quirks & Gotchas
No developer gotchas reported.
GPT Chat Latest Quirks & Gotchas
No developer gotchas reported.