Gemini 3 Pro vs GPT-5.6 Terra
GPT-5.6 Terra leads the LLM Stats Score 49.4 to 38.4. Gemini 3 Pro and GPT-5.6 Terra cost the same.
Google · OpenAI · Updated for 2026
Which is better?
GPT-5.6 Terra leads the overall LLM Stats Score 49.4 to 38.4, ranking #23 overall.
In the 3 individual benchmarks reported for both models, GPT-5.6 Terra wins 2; this is a narrower head-to-head signal than the composite indexes.
GPT-5.6 Terra also accepts a larger context window (1,050,000 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Gemini 3 Pro
- you want predictable pricing at $2.00/M input and $12.00/M output
Choose GPT-5.6 Terra
- overall performance matters — it scores 49.4 and ranks #23 on LLM Stats
- your work emphasizes reasoning and coding — it leads those capability indexes
- you value its reported benchmark strengths — it wins 2 of 3 exact shared results
- you process long inputs — it offers a 1,050,000 token context window
- you want the most recent training data — it shipped Jul 2026
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
21 reported for Gemini 3 Pro · 45 for GPT-5.6 Terra
Gemini 3 Pro outperforms in 1 benchmarks (MMMU-Pro), while GPT-5.6 Terra is better at 2 benchmarks (GPQA, MRCR v2 (8-needle)).
GPT-5.6 Terra shows notably better performance in the majority of benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Gemini 3 Pro ($2.00/1M tokens) costs the same as GPT-5.6 Terra ($2.00/1M tokens).
For output processing, Gemini 3 Pro ($12.00/1M tokens) costs the same as GPT-5.6 Terra ($12.00/1M tokens).
In conclusion, Gemini 3 Pro and GPT-5.6 Terra cost the same.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
GPT-5.6 Terra accepts 1,050,000 input tokens compared to Gemini 3 Pro's 1,048,576 tokens. GPT-5.6 Terra can generate longer responses up to 128,000 tokens, while Gemini 3 Pro is limited to 65,536 tokens.
Input capabilities
Documented input modalities across available providers
Both Gemini 3 Pro and GPT-5.6 Terra support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Gemini 3 Pro
GPT-5.6 Terra
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
Gemini 3 Pro was released on 2025-11-18, while GPT-5.6 Terra was released on 2026-07-09.
GPT-5.6 Terra is 8 months newer than Gemini 3 Pro.
Nov 18, 2025
10 months ago
Jul 9, 2026
3 months ago
7mo newerKnowledge Cutoff
When training data ends
Gemini 3 Pro has a knowledge cutoff of 2025-01-31, while GPT-5.6 Terra has a cutoff of 2026-02-16.
GPT-5.6 Terra has more recent training data (up to 2026-02-16), making it potentially better informed about events through that date compared to Gemini 3 Pro (2025-01-31).
Jan 2025
Feb 2026
1.1 yr newerProvider Availability
Gemini 3 Pro is available from Google. GPT-5.6 Terra is available from OpenAI.
Gemini 3 Pro
GPT-5.6 Terra
Outputs Comparison
Judge for yourself.
Run your own prompts against Gemini 3 Pro and GPT-5.6 Terra side-by-side, then vote on the output you prefer.
FAQ
Common questions about Gemini 3 Pro vs GPT-5.6 Terra.