Claude Opus 4.7 vs GPT-5.5 — Premium AI API Comparison 2026

Requests per Day

Days per Month

Anthropic

Claude Opus 4.7

$0.00

per month

Input cost

Output cost

Cost per request

Requests/month

OpenAI

GPT-5.5

$0.00

per month

Input cost

Output cost

Cost per request

Requests/month

Which Model for Which Use Case?

Cost-Effective Premium

Both models cost $5.00/M input, but Opus 4.7 is 17% cheaper on output at $25 vs $30. For output-heavy workloads like content generation, summarization, and code review, Opus 4.7 delivers premium quality at a slightly lower cost.

Best value: Claude Opus 4.7 (17% cheaper output)

OpenAI Ecosystem

GPT-5.5 integrates seamlessly with the OpenAI ecosystem — Assistants API, function calling, plugins, and tools. If your stack already runs on OpenAI and you need native ecosystem support, GPT-5.5 is the natural choice despite the slight cost premium.

Best ecosystem: GPT-5.5 (OpenAI integrations)

Enterprise Cost Optimization

At 1M requests/month with 500K output tokens, Opus 4.7 saves $2.50/month compared to GPT-5.5. For enterprise-scale deployments, the 17% output cost difference adds up — saving $300/year at this volume, and more at higher scale.

Enterprise: Opus 4.7 saves $300/year at scale

Slightly Cheaper Output

When output volume is high, Opus 4.7's $25/M vs GPT-5.5's $30/M makes a real difference. At $17.50 for 1M input + 500K output, Opus 4.7 costs $2.50 less per month than GPT-5.5's $20.00 — a modest but consistent saving.

High-output tasks: Opus 4.7 ($17.50/mo vs $20.00/mo)

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Frequently Asked Questions

Are Claude Opus 4.7 and GPT-5.5 the same price?

They have the same input price ($5.00/M tokens) but slightly different output prices. Claude Opus 4.7 costs $25.00/M output while GPT-5.5 costs $30.00/M output — making Opus 4.7 17% cheaper for output tokens.

Which is better for coding — Opus 4.7 or GPT-5.5?

Both are top-tier for coding. Opus 4.7 offers strong code generation and analysis at $25/M output, while GPT-5.5 provides excellent reasoning at $30/M output. For most coding tasks, Opus 4.7 delivers comparable quality at 17% lower output cost.

How much would I save using Opus 4.7 instead of GPT-5.5?

For a workload of 1M input + 500K output tokens/month, both cost $5.00 for input, but Opus 4.7 costs $12.50 for output vs GPT-5.5's $15.00 — saving $2.50/month (17%). At scale (10M input + 5M output), you save $25/month — $300/year.

When should I choose GPT-5.5 over Opus 4.7?

Choose GPT-5.5 when: (1) you need the OpenAI ecosystem and tool integrations, (2) you require GPT-5.5's specific strengths in certain benchmarks, (3) you need the 1.05M context window. Choose Opus 4.7 when: (1) you want 17% cheaper output costs, (2) similar input pricing, (3) strong quality for coding, analysis, and creative tasks.