Claude Sonnet 5 vs Claude Opus 4.8
Side-by-side comparison of API pricing, specs, benchmarks, and capabilities
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by Anthropic
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by Anthropic
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|---|---|---|
| Overview | ||
| Status | Current mid tier | Current flagship |
| Released | Jun 30, 2026 | May 28, 2026 |
| Pricing per million tokens | ||
| Input | $2.00/Mtok | $5.00/Mtok |
| Output | $10.00/Mtok | $25.00/Mtok |
| Blended avg | $6.00/Mtok | $15.00/Mtok |
| Cached input | $0.200/Mtok | $0.500/Mtok |
| Specifications | ||
| Context window | 1M tokens | 200K tokens |
| Parameters | Proprietary | Proprietary |
| Speed (TPS) | — | — |
| Modalities | ||
| Input |
textimage
|
textimage
|
| Benchmarks from Vellum LLM Leaderboard | ||
| Avg benchmark score | 80 | |
| Perf / dollar | 5.3 | |
| GPQA Diamond | — | 93.6 |
| SWE-Bench | — | 88.6 |
| Providers | ||
| Available from |
Anthropic — $2.00/$10.00/Mtok
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Anthropic — $5.00/$25.00/Mtok
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Cost at scale — 1M tokens (50/50 input/output)
| Volume | Claude Sonnet 5 | Claude Opus 4.8 | Savings |
|---|---|---|---|
| 1M tokens | $6 | $15 | $9 (60%) |
| 10M tokens | $60 | $150 | $90 (60%) |
| 100M tokens | $600 | $1500 | $900 (60%) |
| 1000M tokens | $6000 | $15000 | $9000 (60%) |
Summary
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.
Claude Opus 4.8 by Anthropic costs $5.00/Mtok input and $25.00/Mtok output, with a 200K-token context window. It supports text, image input.
On a blended cost basis, Claude Sonnet 5 is 150% cheaper than Claude Opus 4.8. It also has a larger context window.
On benchmarks, Claude Opus 4.8 scores higher (80 vs ) on average. In terms of value, Claude Opus 4.8 has better performance per dollar (5.3 vs ).
Note: Pricing is per million tokens. Actual costs vary with usage patterns, prompt caching, and batch discounts. Always verify against official provider pricing pages.