Claude 4 Opus vs GPT-5 — Pricing Comparison 2026

Requests per Day

Days per Month

Anthropic

Claude 4 Opus (Retired)

$0.00

per month

Input cost

Output cost

Cost per request

Requests/month

OpenAI

GPT-5

$0.00

per month

Input cost

Output cost

Cost per request

Requests/month

Which Model for Which Use Case?

Claude 4 Opus Migration

With Claude 4 Opus deprecating June 15, GPT-5 offers the most direct premium alternative — 92% cheaper with 36% more context. Same tier, dramatically lower cost.

Best value migration: GPT-5 (92% cheaper)

Complex Reasoning & Code

GPT-5 excels at complex reasoning, code generation, and multimodal tasks — the same use cases where Claude 4 Opus was strongest. The 272K context handles longer documents than Opus's 200K.

Premium reasoning: GPT-5 ($1.25/$10)

Direct Anthropic Successor

If you need Anthropic's ecosystem and style, Claude Opus 4.8 ($5/$25) is the direct successor — 67% cheaper than Claude 4 Opus with 5x more context (1M tokens).

Direct successor: Claude Opus 4.8 ($5/$25) | Budget premium: GPT-5 ($1.25/$10)

Maximum Cost Savings

For workloads where quality is important but budget matters, GPT-5 at $1.25/$10 is 92% cheaper than Claude 4 Opus. For even deeper savings, consider Llama 4 Maverick ($0.27/$0.85) — 98% cheaper with 1M context.

Premium savings: GPT-5 (92% cheaper) | Budget option: Llama 4 Maverick (98% cheaper)

Need deeper cost analysis?

APIpulse lets you compare all 87 models, save scenarios, and export PDF reports.

87 models across 10 providers

Save up to 10 scenarios

Export PDF cost reports

Optimize — save up to 40%

Free Tools →

Frequently Asked Questions

Is GPT-5 cheaper than Claude 4 Opus?

Yes, dramatically. Claude 4 Opus costs $15.00/M input and $75.00/M output. GPT-5 costs $1.25/M input and $10.00/M output. GPT-5 is 92% cheaper on input and 87% cheaper on output. For a typical workload of 1M input + 500K output tokens/month, GPT-5 costs $6.25 vs Claude 4 Opus's $52.50 — saving you $46.25/month (88%).

How does GPT-5 quality compare to Claude 4 Opus?

Claude 4 Opus was Anthropic's flagship model with excellent reasoning and coding capabilities, but it was retired on June 15, 2026. GPT-5 from OpenAI is a direct competitor with a 272K token context window — 36% larger than Claude 4 Opus's 200K. GPT-5 excels at complex reasoning, code generation, and multimodal tasks. For Opus-level quality at a lower price, GPT-5 is the most direct premium alternative.

What happened when Claude 4 Opus was retired on June 15?

Since June 15, 2026, Claude 4 Opus API calls return 410 Gone errors. You must migrate to a replacement model. Options: (1) GPT-5 ($1.25/$10) — 92% cheaper, 272K context, direct premium competitor. (2) Claude Opus 4.8 ($5/$25) — direct Anthropic successor, 67% cheaper with 5x more context. (3) Llama 4 Maverick ($0.27/$0.85) — 98% cheaper, open source, 1M context. (4) DeepSeek V4 Pro ($0.44/$0.87) — budget open source with 1M context.

Can GPT-5 handle the same tasks as Claude 4 Opus?

Yes. GPT-5 handles complex reasoning, code generation, document analysis, and multimodal tasks that previously required Claude 4 Opus. GPT-5's 272K context window handles longer documents than Opus's 200K. The API is compatible with OpenAI's SDK, making migration straightforward. For tasks that specifically need Anthropic's style, Claude Opus 4.8 ($5/$25) is the direct successor.