API model · 7 comparisons
Claude Sonnet 5.5 compared
How Claude Sonnet 5.5 stacks up against other models on price, limits and the inputs it accepts. Pick a matchup for the full side-by-side, a monthly cost calculator and our verdict.
Prices checked 15 October 2026 from the OpenRouter API.
Claude Sonnet 5.5 at a glance
- Input / 1M tokens
- $2.00
- Output / 1M tokens
- $10.00
- Context window
- 1,000,000 tokens
- Longest reply
- 128,000 tokens
- Accepts
- file, image, text
- Providers on OpenRouter
- 5
- Best provider uptime, 24 h
- 100%
Compare Claude Sonnet 5.5 with
Claude Sonnet 5.5 vs GPT-6 Sol
Claude Sonnet 5.5 and GPT-6 Sol are both mid-priced, all-round models from Anthropic and OpenAI. They cost the same for everyday requests, so the real differences show up with long documents and repeated prompts.
See the comparison vs Claude Opus 5.5Claude Sonnet 5.5 vs Claude Opus 5.5
Sonnet 5.5 and Opus 5.5 are Anthropic's mid-range and top-tier models. They accept the same inputs and read the same amount of text. The big difference is price: Opus costs exactly twice as much.
See the comparison vs Gemini 3.1 Pro PreviewClaude Sonnet 5.5 vs Gemini 3.1 Pro Preview
Claude Sonnet 5.5 and Gemini 3.1 Pro Preview cost about the same to start. The deciding factors are what you need to send, because only Gemini takes audio and video, and whether you're comfortable building on a preview model.
See the comparison vs GPT-6.1 SolClaude Sonnet 5.5 vs GPT-6.1 Sol
Claude Sonnet 5.5 and GPT-6.1 Sol are evenly matched on normal-sized requests. Both work with text, images and files. The differences appear with very long prompts.
See the comparison vs DeepSeek V4.1 FlashDeepSeek V4.1 Flash vs Claude Sonnet 5.5
DeepSeek V4.1 Flash is a low-cost open-weight model served by many providers. Claude Sonnet 5.5 is a mid-priced all-rounder that also reads files. The price gap is huge, so the question is what Sonnet gives you for the extra money.
See the comparison vs Claude Haiku 5.5Claude Haiku 5.5 vs Claude Sonnet 5.5
Haiku 5.5 is Anthropic's low-cost model, and Sonnet 5.5 is its mid-range all-rounder. They take the same inputs and read the same amount of text. Sonnet costs 20 times more per token.
See the comparison vs GPT-6 LunaClaude Sonnet 5.5 vs GPT-6 Luna
Claude Sonnet 5.5 is a mid-priced all-rounder. GPT-6 Luna is OpenAI's budget model at a twentieth of the price. Both read text, images and files. The question is whether Luna is good enough for your feature.
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