A solid, practical upgrade over GPT-4o that hits the sweet spot between capability and cost — but not the best in any single category.
Teams needing reliable, high-quality outputs across coding, writing, and analysis without paying premium GPT-5 prices.
400K context window handles large codebases, lengthy documents, and multi-document research in a single pass
Strong instruction-following and structured output generation, outperforming GPT-4o on complex multi-step tasks
Asymmetric pricing ($1.25 input vs $10 output) rewards prompt-heavy workflows like RAG and document analysis
Reliable tool use and function calling, making it well-suited for agentic pipelines
Output cost of $10/1M tokens is steep for high-volume generation tasks — Claude Sonnet 4.6 is cheaper for output-heavy workloads
See what OpenAI: GPT-5.1 actually costs at your usage level
Based on OpenAI: GPT-5.1 API pricing: $1.25/1M input · $10/1M output. Real costs vary by provider discounts and caching. Check the provider for exact current rates.
Price History
→0% since May 9
4 data points · tracked daily since May 9, 2026
Teams needing reliable, high-quality outputs across coding, writing, and analysis without paying premium GPT-5 prices.. Start free — no card required.
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Pricing moves, ranking shifts, and capability updates.
OpenAI: GPT-5.1 (OpenAI) is now indexed. It supersedes GPT-4o. A solid, practical upgrade over GPT-4o that hits the sweet spot between capability and cost — but not the best in any single category.
View modelOpenAI: GPT-5.1 is best for teams needing reliable, high-quality outputs across coding, writing, and analysis without paying premium gpt-5 prices.. It is a strong fit when that workflow matters more than the tradeoffs around balanced pricing and balanced speed.
You need the highest-tier reasoning (use o3), low-cost bulk generation (use GPT-4o mini or Claude Haiku), or native image output.
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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You need the highest-tier reasoning (use o3), low-cost bulk generation (use GPT-4o mini or Claude Haiku), or native image output.
No native image generation; multimodal input only, so it can't compete with Gemini 3.1 Pro on full multimodal output
Not a dedicated reasoning model — falls short of o3 or Gemini 3.1 Pro on deep mathematical or logical benchmarks
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.
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.
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