API cost decision in 10 seconds
OpenAI GPT Latest vs 🔥GPT-5.5
The standard workload cost is tied; choose by context window, provider fit, latency, or model quality.
Pricing data updated:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
The standard workload cost is tied; choose by context window, provider fit, latency, or model quality.
Both models are estimated at $20 for the standard 1M input plus 500K output workload.
Cost-first pickTie
Context-first pickTie
Sample savings$00%
10x traffic gap$0
Context-window winner: Tie. Cost does not separate this pair on the standard workload, so the next decision point is context window and model behavior.
Cost sensitivity
Workload Sensitivity
The two models stay tied across the input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | OpenAI GPT Latest | GPT-5.5 |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Tie | $40 | $40 |
| Balanced workload | 1M input + 1M output | Tie | $35 | $35 |
| Output-heavy chatbot | 1M input + 5M output | Tie | $155 | $155 |
Estimate your workload cost
Your Workload Cost
This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.
Quick Decision
Tie has the lower input price, Tie has the lower output price, and Tie offers the larger context window.
For a 1M input token plus 500K output token workload, the estimated API cost is $20 for OpenAI GPT Latest and $20 for GPT-5.5.
Choose OpenAI GPT Latest when its provider, model quality, latency, or availability is more important than the numeric price/context winner.
Choose GPT-5.5 when its provider, model quality, latency, or availability is more important than the numeric price/context winner.
| Feature | OpenAI GPT Latest (OpenAI) | 🔥GPT-5.5 (OpenAI) |
|---|---|---|
| Input Price prompt tokens per 1M | $5 | $5 |
| Completion Price per 1M tokens | $30 | $30 |
| Sample Workload Cost 1M input + 500K output | $20 | $20 |
| Context Window | 1.05M | 1.05M |
| Release Date | 2026-04-27 | 2026-04-24 |
| Popularity | #17 |
This model always redirects to the latest model in the OpenAI GPT family.
GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It features a 1M+ token...
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Tie | Both models are estimated at $20 for the standard 1M input plus 500K output workload. |
| High-volume input processing | Tie | Lower prompt-token price matters most when prompts or retrieved passages dominate the bill. |
| Long responses and chatbots | Tie | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Tie | A larger context window leaves more room for retrieved passages and source files. |