$5.00 input / $30.00 output
💰 Calculate Your Savings
See how much you'd save by switching from GPT-5.5 to DeepSeek V4 Pro
$2,296/yr
savings by switching to DeepSeek V4 Pro
GPT-5.5: $2,400/yr → DeepSeek V4 Pro: $104/yr (96% savings)
Frequently Asked Questions
What is the cheapest GPT-5.5 alternative?
DeepSeek V4 Pro is the cheapest at $0.435/$0.87 per million tokens — 91% cheaper on input and 97% cheaper on output than GPT-5.5. For a typical workload of 1M input + 500K output tokens per month, you'd save approximately $54,170 per year by switching.
How much cheaper is Claude Opus 4.8 vs GPT-5.5?
Claude Opus 4.8 costs $5.00 input / $25.00 output per million tokens, compared to GPT-5.5's $5/$30. While the input price is the same, output tokens are 17% cheaper. For a typical workload of 1M input + 500K output tokens per month, you'd save approximately $3,000 per year on output costs alone.
Is Gemini 3.1 Pro a good replacement for GPT-5.5?
Gemini 3.1 Pro is an excellent mid-tier replacement at $2.00/$12 per million tokens — 60% cheaper on both input and output than GPT-5.5. It offers 1M token context (comparable to GPT-5.5's 1.05M) and strong reasoning capabilities. Best for teams wanting premium quality at a significantly lower cost.
Can I switch from GPT-5.5 without rewriting my code?
Mostly yes. Most alternative providers offer OpenAI-compatible APIs, so switching often requires just changing the API endpoint and key. DeepSeek, Anthropic (via SDK), and several others support the OpenAI API format directly. For providers with different APIs, tools like APIpulse generate migration code automatically.
What's the best GPT-5.5 alternative for coding tasks?
For coding tasks, Claude Sonnet 5 ($2/$10) is widely considered the strongest mid-tier alternative with excellent code generation and 1M context. For budget-conscious teams, DeepSeek V4 Pro ($0.435/$0.87) offers surprisingly strong coding performance at 91-97% less cost. Claude Opus 4.8 ($5/$25) is the closest quality match if you need premium-tier output.
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