Claude Opus 5 vs GPT-5.6 Sol
Side-by-side comparison of API pricing, specs, benchmarks, and capabilities
| Specification |
by Anthropic
|
by OpenAI
|
|---|---|---|
| Overview | ||
| Status | Current flagship | Current flagship |
| Released | Jul 24, 2026 | Jul 9, 2026 |
| Pricing per million tokens | ||
| Input | $5.00/Mtok | $5.00/Mtok |
| Output | $25.00/Mtok | $30.00/Mtok |
| Blended avg | $15.00/Mtok | $17.50/Mtok |
| Cached input | $0.500/Mtok | $0.500/Mtok |
| Specifications | ||
| Context window | 1M tokens | 1M tokens |
| Parameters | Proprietary | Proprietary |
| Speed (TPS) | — | — |
| Modalities | ||
| Input |
textimage
|
textimage
|
| Benchmarks source: Vellum LLM Leaderboard | ||
| Avg benchmark score | 77.8 | 83.8 |
| Perf / dollar | 5.2 | 4.8 |
| BrowseComp | 90.8 | 92.2 |
| Humanity's Last Exam | 64.7 | 47.2 |
| AutoBench | 26 | 18.1 |
| GPQA Diamond | — | 94.6 |
| SWE-Bench Verified | — | 96.2 |
| Terminal-Bench 2.1 | — | 88.8 |
| OSWorld-Verified | — | 62.6 |
| ARC-AGI 2 | — | 92.5 |
| HumanEval | — | 96.2 |
| Independent composite scores each on its own scale — not part of the average above | ||
| AA Intelligence Index | 60.7 | 58.9 |
| AA Agentic Index | 55.3 | 54 |
| AA-Omniscience Index (−100–100) | 31.3 | 21.7 |
| GDPval-AA v2 | 1861.5 ELO | 1736.1 ELO |
| LMSYS Chatbot Arena | — | 1484.9 ELO |
| Providers | ||
| Available from |
Anthropic — $5.00/$25.00/Mtok
|
OpenAI — $5.00/$30.00/Mtok
|
Cost at scale
1M tokens · 50/50 input/output| Volume | Claude Opus 5 | GPT-5.6 Sol | Savings |
|---|---|---|---|
| 1M tokens | $15 | $17.5 | $2.5 (14.3%) |
| 10M tokens | $150 | $175 | $25 (14.3%) |
| 100M tokens | $1500 | $1750 | $250 (14.3%) |
| 1000M tokens | $15000 | $17500 | $2500 (14.3%) |
The cheaper option here — Claude Opus 5 costs $15.00/Mtok blended on Anthropic.
Summary
Claude Opus 5 by Anthropic costs $5.00/Mtok input and $25.00/Mtok output, with a 1M-token context window. It supports text, image input.
GPT-5.6 Sol by OpenAI costs $5.00/Mtok input and $30.00/Mtok output, with a 1M-token context window. It supports text, image input.
On a blended cost basis, Claude Opus 5 is 14.3% cheaper than GPT-5.6 Sol.
On benchmarks, GPT-5.6 Sol scores higher (83.8 vs 77.8) on average. In terms of value, Claude Opus 5 has better performance per dollar (5.2 vs 4.8).
Note: Pricing is per million tokens. Actual costs vary with usage patterns, prompt caching, and batch discounts. Always verify against official provider pricing pages.