Comparison · 2026-04-12 · 6 min read
GPT-5 vs Claude 4: A Complete Pricing Breakdown
We compare input, output, and per-request costs between OpenAI's GPT-5 family and Anthropic's Claude 4 lineup to help you pick the right model.
The Two Heavyweights of 2026
OpenAI's GPT-5 and Anthropic's Claude 4 represent the current pinnacle of large language models. But which one is actually cheaper to run at scale? The answer depends heavily on your use case, token ratios, and volume.
Input Token Pricing
GPT-5 charges $2.50 per million input tokens, while Claude 4 Opus comes in at $15.00 per million. That's a 6× difference on the input side alone. However, Claude 4 Sonnet offers a middle ground at $3.00 per million input tokens, making it competitive with GPT-5 for many workloads.
For applications with long system prompts or heavy context (like RAG pipelines), input pricing dominates your bill. In these cases, GPT-5 or Claude 4 Sonnet are clear winners over Claude 4 Opus.
Output Token Pricing
The output side tells a different story. GPT-5 charges $10.00 per million output tokens, while Claude 4 Opus charges $75.00 per million. Claude 4 Sonnet sits at $15.00 per million output tokens.
For code generation, long-form content, or any task that produces substantial output, these differences compound quickly.
Effective Cost Per Request
Let's model a typical chatbot interaction: 800 input tokens and 200 output tokens.
At 100K requests per month, that's the difference between $400 and $2,700.
Context Window Considerations
Both GPT-5 and Claude 4 offer 200K+ context windows, but pricing per token remains constant regardless of how much context you use. The real question is whether you *need* that much context — shorter prompts save money on both platforms.
Our Recommendation
For most production workloads, GPT-5 offers the best price-to-performance ratio. If you need Claude's specific strengths (nuanced reasoning, instruction following), Claude 4 Sonnet is the cost-effective choice. Reserve Claude 4 Opus for tasks where quality absolutely cannot be compromised and budget is secondary.
Use our Calculator to model your exact costs across both providers.
Related Reading
- Anthropic Claude Cost Advisory — 6 strategies to minimize Claude spend across Haiku, Sonnet, and Opus tiers.
- 5 Tactics That Cut Our LLM Costs by 50% — Practical optimizations that apply to both GPT-5 and Claude.
- API Pricing Strategies — Go beyond per-token pricing with committed use, batch, and provisioned throughput.
- Subscription vs. API — Not sure if you need API access? Compare subscription and API economics.