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GPT Terra Latest vs GPT-5.6 Sol

Side-by-side API pricing and Artificial Analysis performance for GPT Terra Latest (~openai) and GPT-5.6 Sol (OpenAI). Green cells mark the better value in each row.

Prices updated Sep 19, 2026, 9:55 PM UTC · refreshed hourly

GPT Terra Latest

~openai

GPT-5.6 Sol

OpenAI

Pricing
Input $/1M$2.00$2.00
Output $/1M$12.00$10.00
Blended $/1M (3:1)$4.50$4.00
RAG example (30K in / 2K out)$0.084$0.08
Quality & speed
Intelligence Index47
Coding Index77.4
Agentic Index50.5
Output speed (tok/s)66
Time to first token71.21s
Specs
Context window1.05M1.05M
Input modalitiesfile, image, textfile, image, text

FAQ

Which is cheaper, GPT Terra Latest or GPT-5.6 Sol?

GPT-5.6 Sol has the lower blended API price at $4.00 per 1M tokens (3:1 input:output mix), versus $4.50 for the other model. Prices are live from OpenRouter and refresh about hourly.

Which is better for RAG workloads?

For a typical RAG request (30K input / 2K output tokens), GPT-5.6 Sol costs about $0.08 per request versus $0.084. Also compare context windows: GPT Terra Latest offers 1.05M and GPT-5.6 Sol offers 1.05M.

Which scores higher on Artificial Analysis benchmarks?

GPT-5.6 Sol leads on the Artificial Analysis Intelligence Index (47 vs —). Check coding and agentic indices on this page for workload-specific tradeoffs.