Best OpenAI flagship for agentic coding, research, and computer-use work.
Agentic coding, computer-use workflows, and complex research tasks
58.6% on SWE-Bench Pro, ahead of GPT-5.4 on the same public coding benchmark
82.7% on Terminal-Bench 2.0 for complex command-line workflows
1M token API context window for large-codebase and document-heavy workflows
Claude Opus 4.7 leads GPT-5.5 on SWE-Bench Pro for pure coding ceiling
Premium API pricing makes it less attractive for high-volume low-risk work
See what GPT-5.5 actually costs at your usage level
Based on GPT-5.5 API pricing: $5/1M input · $30/1M output. Real costs vary by provider discounts and caching. Check the provider for exact current rates.
Price History
Tracking since Apr 26, 2026 · more data builds daily
1 data point · tracked daily since Apr 26, 2026
Agentic coding, computer-use workflows, and complex research tasks. 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.
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.
Pricing moves, ranking shifts, and capability updates.
OpenAI's GPT-5.5 is now included in model rankings with SWE-Bench Pro, Terminal-Bench, pricing, and context-window data.
View modelGPT-5.5 is best for agentic coding, computer-use workflows, and complex research tasks. It is a strong fit when that workflow matters more than the tradeoffs around premium pricing and balanced speed.
You only care about the highest public coding benchmark score or need a cheaper high-volume model.
Mistral: Mistral Nemo is the lower-cost option to compare first when you want a similar workflow fit with less token spend.
OpenAI: GPT-4 Turbo is the better pick when response time matters more than maximum depth or premium quality.
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You only care about the highest public coding benchmark score or need a cheaper high-volume 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.
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.
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