LLM Comparison
Claude Opus 5 vs GPT-6.1 Sol
Side-by-side specs, pricing & capabilities
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2/6 models| Organization | ||
| OpenTools Score | 91 6.1 | |
| Family | Claude Opus | GPT-6.1 |
| Status | Current | Current |
| Release Date | Jul 2026 | Sep 2026 |
| Context Window | 1.0M tokens | 1.1M tokens |
| Input Price | $5.00/M tokens | $2.00/M tokens |
| Output Price | $25.00/M tokens | $10.00/M tokens |
| Pricing Notes | Claude Opus 5 is priced at $5 per million input tokens and $25 per million output tokens; fast mode is priced separately at Fable-level rates. | OpenAI Standard API, USD per million tokens for prompts with at most 272K input tokens: $2 input, $0.10 cached input, $2.50 cache writes, $10 output. Above 272K input, 2x input/cache and 1.5x output apply to the entire request. Fast mode is 2x Standard (not available with EU data residency); Batch and Flex are 50% below Standard. Regional processing adds 10% where available. Reasoning output tokens are billed as output. The maximum input limit is 922K tokens. |
| Capabilities | textvisionreasoningcodingtool-useagentslong-context | textvisionreasoningcodingtool-usecomputer-uselong-contextcontext-caching |
| Training Cutoff | — | 2026-04-30 |
| Max Output | 128K tokens | 128K tokens |
| API Identifier | claude-opus-5 | gpt-6.1-sol |
| Benchmarks | ||
| Artificial Analysis Intelligence Index v4.3 | 50.7 indexartificial-analysis | — |
| Artificial Analysis Intelligence Index v4.3 | 51 indexhttps://artificialanalysis.ai/models/claude-opus-5 | — |
| GPQA Diamond | 93.2%artificial-analysis | — |
| SciCode | 56.4%artificial-analysis | — |
| Terminal-Bench 2.1 | 89.1%artificial-analysis | — |
| View Claude Opus 5 | View GPT-6.1 Sol | |
Cost Calculator
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| Model | Input | Output | Total / mo | vs Best |
|---|---|---|---|---|
| GPT-6.1 SolCheapest | $2.00 | $5.00 | $7.00 | — |
| Claude Opus 5 | $5.00 | $12.50 | $17.50 | +150% |
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Anthropic
Claude Opus 5
Claude Opus 5 is Anthropic's Opus-class model for complex agentic coding and enterprise work. Official Claude docs list the claude-opus-5 API ID, 1M token context window, 128k max output, adaptive thinking, and $5 input / $25 output pricing per million tokens.
OpenAI
GPT-6.1 Sol
GPT-6.1 Sol is OpenAI's proprietary reasoning model for coding, computer use, and professional workflows. The gpt-6.1-sol API model accepts text and images and returns text. OpenAI documents a 1,050,000-token context window, 922,000 maximum input tokens, and 128,000 maximum output tokens. OpenAI reports first-party HealthBench results; Artificial Analysis independently evaluated the max-effort configuration under its v4.3.2 Intelligence Index.
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