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All model prices

Gemini 4 Carbon vs GPT-6.1 Terra API pricing

For a chat message (1K input, 500 output), GPT-6.1 Terra costs $0.0035 per request and Gemini 4 Carbon costs $0.007, so GPT-6.1 Terra is about 2× cheaper.

On the overall leaderboard Gemini 4 Carbon ranks #2 and GPT-6.1 Terra ranks #12.

Prices are the standard pay-as-you-go prices in OpenRouter's public model list, with input at the cache-miss price. Models OpenRouter does not list use the vendor's official price; those listed in CNY are converted to USD at this round's exchange rate.

Work it out for your own usageSee the model leaderboard

Prices and rankings

USD per million tokensGemini 4 CarbonGPT-6.1 Terra
Input$2$1
Output$10$5
Cached input$0.1$0.05
ProvidergoogleOpenAI
Release date—2026-10-26
Overall rank#2#12
Coding rank——
Reasoning rank——
Knowledge rank#2#19
Professional work rank——
Verified2026-11-132026-11-13
Price sourcePrice sourcePrice source

Cost per request by usage

Without cache discounts or batch pricing.

UsageGemini 4 CarbonGPT-6.1 TerraDifference
Chat message1K in / 500 out$0.007$7 per 1,000$0.0035$3.5 per 1,000GPT-6.1 Terra is 2× cheaper
Long document100K in / 2K out$0.22$220 per 1,000$0.11$110 per 1,000GPT-6.1 Terra is 2× cheaper
Agent session500K in / 50K out$1.5$1,500 per 1,000$0.75$750 per 1,000GPT-6.1 Terra is 2× cheaper

More price comparisons

Gemini 4 Carbon vs other models

GPT-6.1 Terra vs other models