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
What people actually use GPT-5.5 for.
Running multi-file implementation and debugging loops in Codex
Building agents that research, operate tools, and verify work over long tasks
Analyzing large business, scientific, or technical documents with 1M context
See what GPT-5.5 actually costs at your usage level
Based on GPT-5.5 API pricing: $30/1M input · $180/1M output. Real costs vary by provider discounts and caching. Check the provider for exact current rates.
Price History
↑500% since May 8
32 data points · tracked daily since May 8, 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.
GPT-5.5 output pricing changed from $30.00/1M to $180.00/1M (↑ more expensive, 500% increase).
View modelGPT-5.5 input pricing changed from $5.00/1M to $30.00/1M (↑ more expensive, 500% increase).
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.
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.
OpenAI: GPT-4 Turbo is the better pick when response time matters more than maximum depth or premium quality.
Newsletter
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You only care about the highest public coding benchmark score or need a cheaper high-volume model.
Ranked from public benchmark and pricing data verified April 26, 2026: SWE-Bench Pro 58.6%, Terminal-Bench 2.0 82.7%, $5/$30 per 1M tokens, 1M API context.
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.
GPT-5.5 output pricing changed from $180.00/1M to $30.00/1M (↓ cheaper, 83% cut).
View modelGPT-5.5 input pricing changed from $30.00/1M to $5.00/1M (↓ cheaper, 83% cut).
View modelGPT-5.5 input pricing changed from $5.00/1M to $30.00/1M (↑ more expensive, 500% increase).
View modelGPT-5.5 output pricing changed from $30.00/1M to $180.00/1M (↑ more expensive, 500% increase).
View modelGPT-5.5 input pricing changed from $5.00/1M to $30.00/1M (↑ more expensive, 500% increase).
View modelGPT-5.5 output pricing changed from $30.00/1M to $180.00/1M (↑ more expensive, 500% increase).
View modelGPT-5.5 output pricing changed from $180.00/1M to $30.00/1M (↓ cheaper, 83% cut).
View modelGPT-5.5 input pricing changed from $30.00/1M to $5.00/1M (↓ cheaper, 83% cut).
View modelGPT-5.5 input pricing changed from $5.00/1M to $30.00/1M (↑ more expensive, 500% increase).
View modelGPT-5.5 output pricing changed from $30.00/1M to $180.00/1M (↑ more expensive, 500% increase).
View modelOpenAI's GPT-5.5 is now included in model rankings with SWE-Bench Pro, Terminal-Bench, pricing, and context-window data.
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