Anthropic
Claude Sonnet 4.6
$0.00
per month
Input cost
Output cost
Cost per request
Requests/month
Google
Gemini 2.5 Pro
$0.00
per month
Input cost
Output cost
Cost per request
Requests/month

Other Models to Consider

DeepSeek V4 Flash
DeepSeek
$0.14 / $0.28 per 1M
1M context
Gemini 3 Flash
Google
$0.50 / $3.00 per 1M
1M context
Mistral Small 4
Mistral
$0.15 / $0.60 per 1M
128K context

Which Model for Which Use Case?

Code Generation & Debugging

Claude Sonnet 4.6 leads on coding tasks — better at following complex instructions, generating production-quality code, and handling multi-file refactoring. For developer tools and code-heavy workflows, Sonnet is the stronger choice.

Better for coding: Sonnet 4.6

Cost-Optimized Production

Gemini 2.5 Pro offers solid performance at 58% lower input cost. For classification, extraction, summarization, and other tasks where "very good" is sufficient, Gemini 2.5 Pro delivers excellent value.

Better value: Gemini 2.5 Pro

Structured Output & Function Calling

Both models handle structured output well, but Sonnet 4.6 has an edge in precise JSON generation and function calling reliability. For API integrations requiring strict schema adherence, Sonnet is more consistent.

More reliable: Sonnet 4.6

Multimodal & Google Ecosystem

Gemini 2.5 Pro integrates natively with Google Cloud, Vertex AI, and Google Workspace. If you're already in the Google ecosystem, Gemini offers seamless integration that Sonnet can't match.

Better ecosystem: Gemini 2.5 Pro

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Frequently Asked Questions

Is Gemini 2.5 Pro cheaper than Claude Sonnet 4.6?

Yes. Gemini 2.5 Pro costs $1.25/M input (58% cheaper than Sonnet's $3.00/M) and $10.00/M output (33% cheaper than Sonnet's $15.00/M). The input cost difference is substantial.

When would I choose Sonnet 4.6 over Gemini 2.5 Pro?

Choose Sonnet 4.6 for coding, complex instruction-following, and tasks where Anthropic's safety and quality standards matter. Sonnet excels at structured output, function calling, and nuanced analysis.

Which model is better for coding?

Claude Sonnet 4.6 generally leads on code generation, debugging, and refactoring tasks. Its instruction-following precision makes it more reliable for complex coding workflows, though Gemini 2.5 Pro is competitive on many benchmarks.

How much can I save by choosing Gemini 2.5 Pro?

For 1,000 input tokens and 500 output tokens at 1,000 requests/day, Gemini 2.5 Pro costs roughly $187.50/month vs Sonnet 4.6's $360/month — saving you about $172/month or roughly 48%.

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