GPT-5.5 vs Claude Opus 4.7
The most capable models from OpenAI and Anthropic, head to head. Compare pricing, context windows, and find the best value for demanding workloads.
Pricing data verified: May 14, 2026
| Specification | GPT-5.5 (OpenAI) | Claude Opus 4.7 (Anthropic) |
|---|---|---|
| Input Price (per 1M tokens) | $5.00 | $5.00 |
| Output Price (per 1M tokens) | $30.00 | $25.00 |
| Context Window | 1M tokens | 1M tokens |
| Tier | Premium | Premium |
| Provider | OpenAI | Anthropic |
Calculate Your Exact Costs
Premium models for demanding workloads — see the real cost difference for your usage.
Other Premium-Tier Models
Which Premium Model for Which Use Case?
Research & Analysis
Complex multi-step reasoning, literature review, data synthesis. Both models handle this well. Claude Opus 4.7's 17% output savings adds up at scale.
Long Document Processing
Both have 1M context windows. For document-heavy workloads with large outputs, Claude Opus 4.7's lower output pricing gives it an edge.
Complex Code Generation
Architectural decisions, multi-file refactoring, complex debugging. Both excel here. GPT-5.5 may have slight edge in certain coding benchmarks.
AI Agents & Autonomous Tasks
Multi-step autonomous workflows where the model reasons and acts. Output-heavy by nature — Claude Opus 4.7's cheaper output pricing makes a meaningful difference.
Modeling premium workloads?
APIpulse Pro lets you compare all 33 models including GPT-5.5 Pro ($30/$180), save scenarios, and export cost reports for your team.
Frequently Asked Questions
Is GPT-5.5 cheaper than Claude Opus 4.7?
Input pricing is identical at $5/M tokens. Claude Opus 4.7 is 17% cheaper on output ($25/M vs $30/M). For output-heavy workloads, Claude Opus 4.7 is the better value.
Which has a larger context window?
Both GPT-5.5 and Claude Opus 4.7 offer 1M token context windows. They're equally capable for processing very long documents, codebases, or extended conversations.
When should I use GPT-5.5 Pro instead?
GPT-5.5 Pro costs $30/M input and $180/M output — 6x more expensive. Use it only for tasks requiring the absolute highest capability: complex multi-step reasoning, research analysis, or tasks where accuracy is critical. For most workloads, standard GPT-5.5 or Claude Opus 4.7 provide better value.
Are premium models worth the cost over mid-tier models?
It depends on your task complexity. For straightforward text generation, mid-tier models (GPT-5 at $1.25/$10, Claude Sonnet 4 at $3/$15) offer 3-5x better value. Premium models justify their cost for complex reasoning, long-context tasks, and nuanced analysis where quality directly impacts outcomes.