Claude Sonnet 5.5 vs Gemini 4 Argon: API cost comparison
For a typical chatbot (1,500 input + 400 output tokens, 100,000 requests a month), Gemini 4 Argon is 14% cheaper: $715 vs $829 for Claude Sonnet 5.5. Paste your own prompt below to compare the exact cost of your workload.
0 characters0 words0 tokens (GPT o200k)
| Model | Per month |
|---|---|
| Claude Sonnet 5.5 | |
| Gemini 4 Argon |
≈ = estimated token count: only OpenAI publishes its tokenizer. Claude counts use Anthropic’s published ratios; use the count_tokens API for an exact number.
Price per million tokens
USD, standard tier. Prices checked on October 28, 2026.
| Claude Sonnet 5.5 | Gemini 4 Argon | |
|---|---|---|
| Input | $2 | $2 |
| Output | $10 | $10 |
| Cached input | $0.1 | $0.1 |
| Cache write (5 min) | $2.5 | Not charged separately |
| Long prompts | Same price at any length | Same price at any length |
| Batch API | 50% off | 50% off |
| Provider | Anthropic (Claude) | Google (Gemini) |
Gemini 4 Argon: Launch price through November 30, 2026; $4 / $20 from December 1, 2026.
Monthly cost for common workloads
| Workload | Claude Sonnet 5.5 | Gemini 4 Argon |
|---|---|---|
| Chatbot 1,500 input + 400 output tokens, 100,000 requests a month | $829 | $715 |
| Document Q&A (RAG) 8,000 input + 500 output tokens, half the input cached, 20,000 requests a month | $340 | $276 |
| Long-document summary 150,000 input + 2,000 output tokens, 1,000 requests a month | $449 | $335 |
| Bulk classification (Batch API) 500 input + 20 output tokens, 1 million requests a month, Batch API where available | $815 | $625 |
Token counts are converted per model: the same text becomes a different number of tokens on each provider (see below). The cheaper option in each row is highlighted.
Frequently asked questions
Is Claude Sonnet 5.5 cheaper than Gemini 4 Argon?
Per million tokens, Claude Sonnet 5.5 costs $2 / $10 (input / output) and Gemini 4 Argon costs $2 / $10. For a typical chatbot workload (1,500 input + 400 output tokens, 100,000 requests a month), Gemini 4 Argon is 14% cheaper: $715 vs $829 for Claude Sonnet 5.5. Token counts differ between providers, so compare the cost of the same prompt rather than the price per token.
How much do Claude Sonnet 5.5 and Gemini 4 Argon cost per million tokens?
Claude Sonnet 5.5: $2 / $10 for input / output, $0.1 for cached input. Gemini 4 Argon: $2 / $10, $0.1 for cached input. Prices in US dollars, standard tier, checked on October 28, 2026.
Do Claude Sonnet 5.5 and Gemini 4 Argon count tokens the same way?
Claude Sonnet 5.5 uses Anthropic's newer tokenizer, which produces about 30% more tokens than earlier Claude models. We estimate about 1.43× the GPT o200k count for the same text. Gemini 4 Argon's tokenizer is not published. We estimate about 1.05× the GPT o200k count for the same text.
Do Claude Sonnet 5.5 and Gemini 4 Argon have a Batch API discount?
Both do: Claude Sonnet 5.5 gets 50% off and Gemini 4 Argon 50% off for requests sent through the Batch API, which may take up to 24 hours.
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