GPT-6.1 Terra vs o3
GPT-6.1 Terra leads the LLM Stats Score 47.5 to 30.4. GPT-6.1 Terra is 1.8x cheaper per token.
OpenAI · OpenAI · Updated for 2026
Which is better?
GPT-6.1 Terra leads the overall LLM Stats Score 47.5 to 30.4, ranking #36 overall.
On price, GPT-6.1 Terra is roughly 1.8x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
GPT-6.1 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 GPT-6.1 Terra
- overall performance matters — it scores 47.5 and ranks #36 on LLM Stats
- your work emphasizes reasoning and coding — it leads those capability indexes
- cost matters — it's about 1.8x cheaper per token
- you process long inputs — it offers a 1,050,000 token context window
- you want the most recent training data — it shipped Oct 2026
Choose o3
- you want predictable pricing at $2.00/M input and $8.00/M output
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
8 reported for GPT-6.1 Terra · 22 for o3
GPT-6.1 Terra and o3don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, GPT-6.1 Terra ($1.00/1M tokens) is 2.0x cheaper than o3 ($2.00/1M tokens).
For output processing, GPT-6.1 Terra ($5.00/1M tokens) is 1.6x cheaper than o3 ($8.00/1M tokens).
In conclusion, o3 is more expensive than GPT-6.1 Terra.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
GPT-6.1 Terra accepts 1,050,000 input tokens compared to o3's 200,000 tokens. GPT-6.1 Terra can generate longer responses up to 128,000 tokens, while o3 is limited to 100,000 tokens.
Input capabilities
Documented input modalities across available providers
Both GPT-6.1 Terra and o3 support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
GPT-6.1 Terra
o3
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
GPT-6.1 Terra was released on 2026-10-26, while o3 was released on 2025-04-16.
GPT-6.1 Terra is 19 months newer than o3.
Oct 26, 2026
5 days ago
1.5yr newerApr 16, 2025
1.5 years ago
Knowledge Cutoff
When training data ends
GPT-6.1 Terra has a knowledge cutoff of 2026-06-01, while o3 has a cutoff of 2024-05-31.
GPT-6.1 Terra has more recent training data (up to 2026-06-01), making it potentially better informed about events through that date compared to o3 (2024-05-31).
Jun 2026
2.1 yr newerMay 2024
Provider Availability
GPT-6.1 Terra is available from OpenAI. o3 is available from OpenAI.
GPT-6.1 Terra
o3
Outputs Comparison
Judge for yourself.
Run your own prompts against GPT-6.1 Terra and o3 side-by-side, then vote on the output you prefer.
FAQ
Common questions about GPT-6.1 Terra vs o3.