The most capable model OpenAI offers, but the steep output cost means it's only justifiable for genuinely high-stakes, complex tasks.
95
Coding
93
Writing
92
Research
10
Images
5
Value
82
Long Context
Use this when
Demanding professional workflows requiring deep reasoning, nuanced writing, and sophisticated multi-step problem solving where cost is secondary to quality.
Skip this if
You're running high-volume, cost-sensitive, or latency-critical applications where GPT-4o or a flash-tier model would deliver 90% of the quality at 10% of the cost.
Pricing
$15.00/1M in
$120.00/1M out
→0%since May 2026
Context
400k tokens
Speed
Deliberate
GPT-5 Prospecs & pricing
Verified Sep 4, 2026 against the AI Gateway catalog
Output cost of $120/1M tokens is exceptionally high and will compound quickly in agentic or multi-turn workflows. Budget carefully. Context window of 400K is generous but falls short of Gemini 3.1 Pro's 1M+ offering for ultra-long document tasks.
State-of-the-art reasoning and instruction-following surpassing GPT-4o by a significant margin
400K context window enables analysis of full codebases, legal documents, or lengthy research corpora
Exceptional at complex multi-step coding tasks including debugging, architecture design, and code review
Superior nuanced writing with consistent voice, tone control, and factual grounding compared to Claude Sonnet 4.6
Weaknesses
At $120/1M output tokens, it is among the most expensive models available — roughly 10x the cost of GPT-4o Mini and far pricier than Gemini 3.1 Pro
No native image generation capability despite multimodal input support
Deliberate inference speed makes it unsuitable for real-time or high-volume interactive applications
Real-world use cases
What people actually use GPT-5 Pro for.
Auditing and refactoring a 50,000-line legacy codebase for security vulnerabilities and architectural improvements
Drafting a high-stakes legal brief or regulatory submission requiring precise language and comprehensive source synthesis
Conducting deep competitive research by analyzing hundreds of pages of financial filings, patents, and technical documentation in a single context
How GPT-5 Pro compares
The nearest models people weigh against it, and what actually separates them.
vs GPT-4 Turbo — Against GPT-4 Turbo (OpenAI), GPT-5 Pro costs about 70% more per token, takes 3.1x the context and answers slower. GPT-4 Turbo is the one to check first if the price difference matters more than the ceiling.
vs GPT-4 Turbo (older v1106) — Against GPT-4 Turbo (older v1106) (OpenAI), GPT-5 Pro costs about 70% more per token, takes 3.1x the context and answers slower. GPT-4 Turbo (older v1106) is the one to check first if the price difference matters more than the ceiling.
vs GPT-4 Turbo Preview — Against GPT-4 Turbo Preview (OpenAI), GPT-5 Pro costs about 70% more per token, takes 3.1x the context and answers slower. GPT-4 Turbo Preview is the one to check first if the price difference matters more than the ceiling.
Price History
GPT-5 Pro pricing over time
→0% since May 30
90 data points · tracked daily since May 30, 2026
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Start using GPT-5 Pro
Demanding professional workflows requiring deep reasoning, nuanced writing, and sophisticated multi-step problem solving where cost is secondary to quality.. Start free — no card required.
GPT-4 Turbo is OpenAI's high-capability flagship model featuring a 128K context window, trained on data up to April 2024. It delivers strong reasoning, coding, and instruction-following across complex tasks.
Verdict
A capable but aging flagship that has been outpaced by cheaper, faster successors in OpenAI's own lineup.
Quality score
75%
Pricing
$10.00/1M in
$30.00/1M out
Speed
Balanced
3/5 speed
Context
128k tokens
GPT-4 Turbo is available via the OpenAI API. It has largely been succeeded by GPT-4o, which is faster, supports vision natively, and is cheaper. Organizations should evaluate whether migrating to GPT-4o or o3 makes more sense before building new workflows on this model.
GPT-4 Turbo (v1106) is an older snapshot of OpenAI's flagship GPT-4 Turbo model released in November 2023, offering a 128K context window with strong general-purpose reasoning and instruction-following capabilities. It predates later GPT-4 Turbo updates and GPT-4o, making it a legacy choice for workflows locked to this specific version.
Verdict
A reliable but outdated GPT-4 snapshot that only makes sense when version pinning is a hard requirement.
Quality score
66%
Pricing
$10.00/1M in
$30.00/1M out
Speed
Balanced
3/5 speed
Context
128k tokens
This is a pinned model snapshot (v1106) and will not receive capability updates. OpenAI may deprecate older snapshots over time. Knowledge cutoff is April 2023. Not recommended for new deployments given the superior cost-performance of GPT-4o and GPT-4.1.
Legacy128K ContextPinned SnapshotGPT-4Premium
Best for
Teams requiring a pinned, stable version of GPT-4 Turbo for reproducible outputs in long-document analysis or complex instruction pipelines.
GPT-4 Turbo Preview is an early access version of GPT-4 Turbo, OpenAI's then-flagship model featuring a 128K context window and knowledge improvements over the original GPT-4. It was designed to deliver GPT-4-class reasoning at reduced cost compared to the original GPT-4.
Verdict
A once-capable flagship now overshadowed by faster, cheaper, and smarter successors.
Quality score
67%
Pricing
$10.00/1M in
$30.00/1M out
Speed
Balanced
3/5 speed
Context
128k tokens
This is a 'preview' variant that OpenAI has largely deprecated in favor of gpt-4-turbo and gpt-4o. The endpoint may be retired or redirected by OpenAI without notice. Check the OpenAI model deprecation schedule before building production applications on this model.
GPT-4Long ContextLegacyPremiumOpenAI
Best for
Complex multi-step reasoning, long-document analysis, and professional writing tasks requiring strong instruction-following.
OpenAI: GPT-5 Pro (OpenAI) is now indexed. It supersedes GPT-4o. The most capable model OpenAI offers, but the steep output cost means it's only justifiable for genuinely high-stakes, complex tasks.
GPT-5 Pro costs $15 per million input tokens and $120 per million output tokens on the API. A month of 10M input and 2M output tokens runs about $390.00 at list price, before any batch or caching discounts.
What is the context window of GPT-5 Pro?
GPT-5 Pro has a 400k tokens context window, with up to 272k tokens of output per response. That is the total of prompt plus response the model can hold in one request.
What is the knowledge cutoff of GPT-5 Pro?
GPT-5 Pro's training data runs through September 30, 2024, and the model was released on October 6, 2025. For anything after that date it needs web search or documents in the prompt.
What is GPT-5 Pro best for?
GPT-5 Pro is best for demanding professional workflows requiring deep reasoning, nuanced writing, and sophisticated multi-step problem solving where cost is secondary to quality.. It is a strong fit when that workflow matters more than the tradeoffs around premium pricing and deliberate speed.
When should I avoid GPT-5 Pro?
You're running high-volume, cost-sensitive, or latency-critical applications where GPT-4o or a flash-tier model would deliver 90% of the quality at 10% of the cost.
What is a cheaper alternative to GPT-5 Pro?
GPT-4 Turbo (OpenAI) at $10.00/1M/1M input against GPT-5 Pro's $15.00/1M/1M — roughly 70% less per token all in. A capable but aging flagship that has been outpaced by cheaper, faster successors in OpenAI's own lineup. Compare it first if GPT-5 Pro's pricing is the thing stopping you.
What is a faster alternative to GPT-5 Pro?
GPT-4 Turbo (older v1106) — balanced against GPT-5 Pro's deliberate, with 128k tokens of context. Worth the swap when response time is what your users notice rather than the last few points of reasoning depth.
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