GPT-5.5
OpenAI's latest agentic flagship for coding, research, computer-use workflows, and long multi-step knowledge work.
The sharpest everyday workhorse in OpenAI's lineup, best when you need precise instructions met over long documents or complex codebases.
Developers and researchers needing accurate instruction-following and long-document analysis at a cost-efficient rate.
You need advanced mathematical reasoning or multi-step logical deduction — use o3 or o4-mini instead.
Priced at $2/1M input and $8/1M output tokens — cheaper than GPT-4o at launch. The 1M context window is real but performance near the ceiling is less tested than Gemini's equivalent. No built-in image generation or voice modality.
1M token context window enables full codebase or document corpus ingestion in a single call
Noticeably improved instruction-following over GPT-4o, especially for multi-step structured tasks
Strong coding performance that rivals Claude Sonnet 4.6 on real-world agentic programming tasks
Competitive $2/$8 input/output pricing undercuts GPT-4o equivalents while improving quality
No native image generation capability — requires separate DALL-E integration
Lacks the deep chain-of-thought reasoning of o3 or o4-mini for complex math and logic problems
Long-context retrieval quality degrades in the 500K–1M range compared to Gemini 3.1 Pro's native architecture
What people actually use OpenAI: GPT-4.1 for.
Ingesting an entire 300-page legal contract and extracting all liability clauses with precise citations
Building a multi-file code refactoring agent that rewrites legacy Python 2 codebases to Python 3
Summarizing and cross-referencing a full academic literature corpus to identify research gaps
Price History
→0% since May 9
48 data points · tracked daily since May 9, 2026
Developers and researchers needing accurate instruction-following and long-document analysis at a cost-efficient rate.. Start free — no card required.
Recommendations are made independently based on real-world use and public benchmarks. See our disclosures for details.
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Pricing moves, ranking shifts, and capability updates.
OpenAI: GPT-4.1 (OpenAI) is now indexed. It supersedes GPT-4o. The sharpest everyday workhorse in OpenAI's lineup, best when you need precise instructions met over long documents or complex codebases.
View modelOpenAI: GPT-4.1 is best for developers and researchers needing accurate instruction-following and long-document analysis at a cost-efficient rate.. It is a strong fit when that workflow matters more than the tradeoffs around balanced pricing and balanced speed.
You need advanced mathematical reasoning or multi-step logical deduction — use o3 or o4-mini instead.
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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