GPT-5.5
OpenAI's latest agentic flagship for coding, research, computer-use workflows, and long multi-step knowledge work.
A capable but aging flagship that has been outpaced by cheaper, faster successors in OpenAI's own lineup.
Complex multi-step tasks requiring deep reasoning, long document analysis, or sophisticated code generation where cost is secondary to quality.
You're cost-sensitive or need real-time speed — GPT-4o Mini, Claude Haiku, or Gemini Flash deliver far better value per dollar for most standard tasks.
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.
128K context window handles full codebases, long legal documents, and lengthy transcripts
Strong instruction-following with reliable JSON mode and function calling
Broad world knowledge with an April 2024 training cutoff
Consistent output quality on complex, multi-turn reasoning tasks
At $10/$30 per million tokens, it's significantly more expensive than Claude Sonnet 4.6 or Gemini 1.5 Pro for comparable output quality
Largely superseded by GPT-4o and newer OpenAI models that are faster and cheaper
No native image generation capability; multimodal input only, no output
What people actually use OpenAI: GPT-4 Turbo for.
Analyzing a 100-page legal contract and extracting key clauses with citations
Generating a full REST API with authentication, error handling, and test coverage from a detailed spec
Synthesizing research across multiple long academic papers into a structured literature review
Price History
→0% since May 9
48 data points · tracked daily since May 9, 2026
Complex multi-step tasks requiring deep reasoning, long document analysis, or sophisticated code generation where cost is secondary to quality.. Start free — no card required.
Recommendations are made independently based on real-world use and public benchmarks. See our disclosures for details.
Similar models worth checking before you commit.
OpenAI's latest agentic flagship for coding, research, computer-use workflows, and long multi-step knowledge work.
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.
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.
Pricing moves, ranking shifts, and capability updates.
OpenAI: GPT-4 Turbo (OpenAI) is now indexed. A capable but aging flagship that has been outpaced by cheaper, faster successors in OpenAI's own lineup.
View modelOpenAI: GPT-4 Turbo is best for complex multi-step tasks requiring deep reasoning, long document analysis, or sophisticated code generation where cost is secondary to quality.. It is a strong fit when that workflow matters more than the tradeoffs around premium pricing and balanced speed.
You're cost-sensitive or need real-time speed — GPT-4o Mini, Claude Haiku, or Gemini Flash deliver far better value per dollar for most standard tasks.
Meta: Llama 3.1 8B Instruct is the lower-cost option to compare first when you want a similar workflow fit with less token spend.
GPT-5.5 is the better pick when response time matters more than maximum depth or premium quality.
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