Claude Opus 5 vs GPT-5.6 Sol: Specs & Benchmark Comparison
Claude Opus 5 is developed by Anthropic, while GPT-5.6 Sol comes from OpenAI. Both were released in July 2026.
The two models share 7 published benchmarks. Claude Opus 5 leads on 5 of them, GPT-5.6 Sol on 2. The widest gaps are on ARC-AGI-3, where Claude Opus 5 scores 30.2% against 7.8%; OSWorld 2.0, where Claude Opus 5 scores 70.6% against 62.6%. Averaged across everything we track, Claude Opus 5 sits at 55.2% and GPT-5.6 Sol at 64.5%.
On price the two are close: Claude Opus 5 costs $5 per million input tokens and $25 per million output tokens, GPT-5.6 Sol $5 and $30. Both accept a context window of about 1M tokens. Both accept text and images as input.
| Characteristic | Claude Opus 5 | GPT-5.6 Sol |
|---|---|---|
| Company | Anthropic | OpenAI |
| Release Date | July 24, 2026 | July 9, 2026 |
| Parameters | — | — |
| Multimodal | Yes | Yes |
| Context (input) | 1.0M | 1.1M |
| Context (output) | 128K | 128K |
| Input Price / 1M | $5.00 | $5.00 |
| Output Price / 1M | $25.00 | $30.00 |
| Average Score | 55.2% | 64.5% |
| Benchmarks | ||
| ARC-AGI-3 | 30.2% | 7.8% |
| OSWorld 2.0 | 70.6% | 62.6% |
| AutomationBench | 26.0% | 18.1% |
| FrontierCode 1.1 | 53.4% | 47.5% |
| DeepSWE 1.1 | 68.8% | 73.0% |
| HealthBench Professional | 59.8% | 60.5% |
| BrowseComp | 90.8% | 90.4% |
Visual Benchmark Comparison
Verdict
Claude Opus 5 leads in 2 out of 4 comparison categories.
Both models show comparable average scores: Claude Opus 5 — 0.6, GPT-5.6 Sol — 0.6.
Claude Opus 5 is 1.2x cheaper: input $5.00/1M vs $5.00/1M tokens.
GPT-5.6 Sol supports a larger context: 1M vs 1M tokens.
Claude Opus 5 is newer: released 7/24/2026 vs 7/9/2026.
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Frequently Asked Questions
Which is better for coding — Claude Opus 5 or GPT-5.6 Sol?
Which model is cheaper — Claude Opus 5 or GPT-5.6 Sol?
Which has a larger context window — Claude Opus 5 or GPT-5.6 Sol?
The Claude Opus 5 and GPT-5.6 Sol comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Claude Opus 5 or GPT-5.6 Sol page. See also the complete list of AI model comparisons.