GPT-5.4 mini vs GPT-5.5 Pro
GPT-5.4 mini vs GPT-5.5 Pro: GPT-5.4 mini is cheaper for input-heavy usage ($0.75/M vs $30.00/M input tokens), while GPT-5.4 mini is better for long-context tasks (1,050,000 tokens).
Direct answer: choose GPT-5.4 mini for lower token spend and choose GPT-5.4 mini when your workload needs longer context.
Common pricing searches covered on this page: GPT-5.4 mini vs GPT-5.5 Pro • GPT-5.4 mini vs GPT-5.5 Pro pricing • GPT-5.4 mini vs GPT-5.5 Pro API pricing and 5 4 mini vs 5 5 pro pricing.
Cost Comparison (1000 input + 500 output tokens, 100 requests/day)
GPT-5.4 mini
GPT-5.5 Pro
Cost Differences
GPT-5.5 Pro costs more than GPT-5.4 mini
Quick Recommendation
Winner for direct API pricing: GPT-5.4 mini. At the default workload, GPT-5.4 mini saves about $351.00/month ($4,270.50/year) versus GPT-5.5 Pro.
Feature Comparison
| Feature | GPT-5.4 mini | GPT-5.5 Pro |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Input Price | $0.75/1M tokens | $30.00/1M tokens |
| Output Price | $4.50/1M tokens | $180.00/1M tokens |
| Context Window | 1,050,000 tokens | 1,050,000 tokens |
| Max Output | 65,536 tokens | 128,000 tokens |
| Category | efficient | reasoning |
| Capabilities | textvisioncode | textvisioncodereasoning |
| Release Date | 3/6/2026 | 4/24/2026 |
GPT-5.4 mini vs GPT-5.5 Pro: Which Should You Choose?
Choosing between GPT-5.4 mini and GPT-5.5 Pro depends on your priorities: cost efficiency, context length, or raw capability. GPT-5.4 mini is the more affordable option at $0.75/1M input tokens — 98% cheaper than GPT-5.5 Pro.
These models target different tiers: GPT-5.4 mini is a efficient model while GPT-5.5 Pro is reasoning. This means they're optimized for different workloads. GPT-5.5 Pro targets more demanding workloads, while GPT-5.4 mini provides a cost-effective option for everyday tasks.
Output costs matter too. GPT-5.4 mini charges $4.50/1M output tokens vs $180.00 for GPT-5.5 Pro. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. GPT-5.4 mini has the edge here at $4.50/1M output tokens.
Multimodal capabilities: Both models support vision (image understanding), so you can send images alongside text prompts with either option.
Best Use Cases
Choose GPT-5.4 mini when:
- • Budget is a primary concern
- • You're already using OpenAI's API ecosystem
- • You're running high-volume, latency-sensitive workloads
Choose GPT-5.5 Pro when:
- • You need more capabilities (reasoning)
- • You need longer outputs (up to 128,000 tokens)
- • You're already using OpenAI's API ecosystem
Pros and Caveats at a Glance
GPT-5.4 mini
- • Input pricing: $0.75/M tokens
- • Output pricing: $4.50/M tokens
- • Context window: 1,050,000 tokens
- • Max output: 65,536 tokens
Watch out for
- • Trade-offs are minor in this matchup.
GPT-5.5 Pro
- • Input pricing: $30.00/M tokens
- • Output pricing: $180.00/M tokens
- • Context window: 1,050,000 tokens
- • Max output: 128,000 tokens
Watch out for
- • Higher input cost than GPT-5.4 mini
- • Higher output cost than GPT-5.4 mini
Try Different Scenarios
Use the calculator below to see how costs change with different usage patterns
GPT-5.4 mini (OpenAI)
GPT-5.5 Pro (OpenAI)
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Which is cheaper, GPT-5.4 mini or GPT-5.5 Pro?▼
What is the context window difference between GPT-5.4 mini and GPT-5.5 Pro?▼
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