GPT-5.6 Terra vs Claude Sonnet 5
Side-by-side comparison of API pricing, specs, benchmarks, and capabilities
Claude Sonnet 5 is 31.4% cheaper on blended cost ($6.00 vs $8.75/Mtok) — note: different model classes (mid tier vs flagship)
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Oby OpenAI
|
Claude Sonnet 5 Intro price
Aby Anthropic
|
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|---|---|---|
| Overview | ||
| Status | Current flagship | Current mid tier |
| Released | Jul 9, 2026 | Jun 30, 2026 |
| Pricing per million tokens | ||
| Input | $2.50/Mtok | $2.00/Mtok |
| Output | $15.00/Mtok | $10.00/Mtok |
| Blended avg | $8.75/Mtok | $6.00/Mtok |
| Cached input | $0.250/Mtok | $0.200/Mtok |
| Specifications | ||
| Context window | 1M tokens | 1M tokens |
| Parameters | Proprietary | Proprietary |
| Speed (TPS) | — | — |
| Modalities | ||
| Input |
textimage
|
textimage
|
| Providers | ||
| Available from |
OpenAI — $2.50/$15.00/Mtok
|
Anthropic — $2.00/$10.00/Mtok
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Cost at scale — 1M tokens (50/50 input/output)
| Volume | GPT-5.6 Terra | Claude Sonnet 5 | Savings |
|---|---|---|---|
| 1M tokens | $8.75 | $6 | $2.75 (31.4%) |
| 10M tokens | $87.5 | $60 | $27.5 (31.4%) |
| 100M tokens | $875 | $600 | $275 (31.4%) |
| 1000M tokens | $8750 | $6000 | $2750 (31.4%) |
Try Claude Sonnet 5 on Anthropic
The cheaper option here — Claude Sonnet 5 costs $6.00/Mtok blended on Anthropic.
Summary
GPT-5.6 Terra by OpenAI costs $2.50/Mtok input and $15.00/Mtok output, with a 1M-token context window. It supports text, image input.
Claude Sonnet 5 by Anthropic costs $2.00/Mtok input and $10.00/Mtok output, with a 1M-token context window. It supports text, image input.
On a blended cost basis, Claude Sonnet 5 is 31.4% cheaper than GPT-5.6 Terra.
Note: Pricing is per million tokens. Actual costs vary with usage patterns, prompt caching, and batch discounts. Always verify against official provider pricing pages.