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GPT-5.4 vs GPT-5.5
OpenAI's mid-tier at $2.50/$15 vs premium at $5/$30. GPT-5.5 is 2x more expensive but offers 2.6x the context window (1.05M vs 400K). Is the premium worth it for your workload?
Pricing data verified: Jul 3, 2026
| Specification | GPT-5.4 (OpenAI) | GPT-5.5 (OpenAI) |
|---|---|---|
| Input Price (per 1M tokens) | $2.50 | $5.00 |
| Output Price (per 1M tokens) | $15.00 | $30.00 |
| Context Window | 400K tokens | 1.05M tokens |
| Tier | Mid | Premium |
| Provider | OpenAI | OpenAI |
Calculate Your Exact Costs
See the real price difference between GPT-5.4 and GPT-5.5 for your specific workload.
Other OpenAI Models
Which Model for Which Use Case?
Long-Document Processing
GPT-5.5's 1.05M context window (2.6x GPT-5.4's 400K) makes it the clear choice for processing long documents, legal contracts, research papers, and large codebases. If your workload consistently exceeds 400K tokens, GPT-5.5 is your only option — the 2x price premium is justified by the context requirement.
Code Generation & Debugging
Both models handle coding tasks well. GPT-5.4 at $2.50/$15 delivers strong code quality for most development workflows. GPT-5.5 at $5/$30 may have an edge on the most complex multi-file refactoring tasks. For most coding work where context stays under 400K, GPT-5.4 offers better value at half the price.
Content Generation
Blog posts, marketing copy, documentation, creative writing. GPT-5.4 at $2.50/$15 produces high-quality content at half the output cost of GPT-5.5 ($30/1M). For bulk content generation where context stays manageable, GPT-5.4's 50% savings on output tokens add up quickly at scale.
Complex Reasoning & Analysis
Multi-step reasoning, research synthesis, nuanced analysis. GPT-5.5's premium tier may deliver meaningfully better quality on the most complex tasks. If your use case demands the absolute best reasoning (financial analysis, medical research, legal reasoning), the 2x premium may be justified. For standard analysis tasks, GPT-5.4 is sufficient.
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Frequently Asked Questions
How much more expensive is GPT-5.5 than GPT-5.4?
GPT-5.5 costs $5.00/$30.00 per 1M tokens vs GPT-5.4 at $2.50/$15.00 — exactly 2x more on both input and output. For a typical workload of 1M input + 500K output tokens/month, GPT-5.4 costs $10 vs GPT-5.5's $20, a $10/month difference. At 10M input + 5M output, the gap grows to $100/month. The price difference is consistent and predictable.
Is GPT-5.5 worth 2x the price?
It depends on your needs. GPT-5.5 offers a 1.05M context window (2.6x GPT-5.4's 400K) and premium-tier quality. If you need the larger context for long documents or the highest quality on complex reasoning, the 2x premium is justified. For most production workloads where 400K context suffices, GPT-5.4 at half the price offers better value.
Which has a larger context window?
GPT-5.5 has a much larger context at 1.05M tokens vs GPT-5.4's 400K tokens — 2.6x more context. If your workload involves long documents, large codebases, or extended conversations exceeding 400K tokens, GPT-5.5 is your only option between these two. The context difference is the primary justification for the 2x price premium.
When should I use GPT-5.4 over GPT-5.5?
Choose GPT-5.4 ($2.50/$15) for most production workloads — content generation, code assistance, chatbots, data analysis, and any task where 400K context is sufficient. You get strong mid-tier quality at half the price. Choose GPT-5.5 ($5/$30) when you need the 1.05M context window, require the absolute best reasoning quality, or want premium-tier capabilities.
Can GPT-5.4 handle the same tasks as GPT-5.5?
For most production workloads, GPT-5.4 delivers competitive quality at half the price. It handles coding, content generation, analysis, and general reasoning well. GPT-5.5 excels on the most complex multi-step reasoning tasks and offers 2.6x more context. The quality gap is meaningful but not dramatic — the price gap is exactly 2x. For 80%+ of use cases, GPT-5.4 offers better value per dollar spent.
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