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🇺🇸 United States🧠 GeneralistReleased April 2026

GPT-5.5

OpenAI
Free
Verdict

The default choice when quality matters more than budget.

Overview

GPT-5.5 is OpenAI's most capable model at launch. It understands a task earlier, plans, uses tools and checks its own work until completion. It targets agentic coding, computer use and knowledge work. 1M-token context. High output pricing, best reserved for cases where quality matters more than budget.

Skill profile

FrenchReasoningSpeedCreativitySafety
Arena Elo1482
Verified benchmarks
SWE-Bench82.6%

What do these scores mean?

SWE-Bench82.6%excellent

Resolving real GitHub issues under real conditions (SWE-bench Verified).

Strengths

  • Top-tier reasoning
  • Excellent at code
  • Strong French quality
  • World-class on Arena

Limitations

  • High output cost
  • No native GDPR guarantee

Who is it for

A good fit if…
  • you need advanced reasoning or analysis
  • you build with a coding agent
  • you work in French
Skip it if…
  • your budget is tight
  • you handle sensitive EU data

Ideal use cases

  • Agentic coding and long-horizon tasks
  • Research and document analysis
  • Multi-tool automation

Access & availability

Paid API per tokenFree tier available

Key specifications

Context
1M
Input price
$5.00 $/M
Output price
$30.00 $/M
Speed
—
Price verified Jun 1, 2026·Official source ↗Benchmarks not audited

Estimate your monthly cost

Per-token API pricing
$363/ month with GPT-5.5

For the same usage

Indicative estimate based on standard API rates (excluding caching, batch and volume discounts). Always check the official pricing before committing.

Privacy

Not GDPR-compliant
Advanced data · for experts
Architecture, modalities, detailed cost, full benchmarks
▾
Architecture
—
Size
—
Cutoff date
Nov 2025
Inputs
text, image
Outputs
text
License
commercial
Hosting
—
Hallucination score
—
Estimated cost (API)
Typical exchange (~3k in / 1k out)
≈ $0.0450
1M in + 1M out
≈ $35.00
All benchmarks
Arena Elo1482
MMLU—
GPQA—
HumanEval—
SWE-Bench82.6%
MATH—
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