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GPT-6.1 Terra vs GPT-6.1 Terra Pro

Detailed technical comparison between GPT-6.1 Terra (OpenAI) and GPT-6.1 Terra Pro (OpenAI). Review live API token pricing, context window capabilities, time-to-first-token latency, and verified benchmark scores side-by-side.

⚡ Executive Summary & Verdict

Comparison Snapshot

GPT-6.1 Terra: 0 WinsvsGPT-6.1 Terra Pro: 6 Wins
Context Leader

Tie

Equal Capacity
Agentic Tool-Calling

Tie

Equal Capability
Lowest Latency (TTFT)

Tie

Equal Speed
Input Price Leader

Tie

Equal Pricing
OpenAIactive

GPT-6.1 Terra

GPT-6.1 Terra is the mid-tier model in OpenAI's GPT-6.1 series, priced below GPT-6.1 Sol. It is suited for everyday agentic, coding, and writing work, is particularly strong at understanding screenshots...

View GPT-6.1 Terra Full Specs →
OpenAIactive

GPT-6.1 Terra Pro

GPT-6.1 Terra Pro is the same underlying model as [GPT-6.1 Terra](https://openrouter.ai/openai/gpt-6.1-terra), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. **Cost note:** pro mode spends far more...

View GPT-6.1 Terra Pro Full Specs →

Technical Specifications

🏆 = Superior Spec
SpecificationGPT-6.1 TerraGPT-6.1 Terra Pro
ProviderOpenAIOpenAI
Context Window1,050,000 tokens1,050,000 tokens
Agent SuitabilityNot yet benchmarkedNot yet benchmarked
Time to First Token (TTFT)No public TTFT dataNo public TTFT data
Deployment Modelmanaged apimanaged api
Production StabilityNot verifiedNot verified
API AvailableYesYes
Released Date2026-10-262026-10-26

API Pricing Comparison

Input Price per Million Tokens

GPT-6.1 Terra

$1.00

GPT-6.1 Terra Pro

$1.00

Output Price per Million Tokens

GPT-6.1 Terra

$5.00

GPT-6.1 Terra Pro

$5.00

💡 Cost Ratio: Both models offer identical input token pricing ($1.00 / MTok).

Want to test both models live?

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Benchmark Performance Metrics

Standardized Scores (0–100%)

Scores show verified raw accuracy percentages across standardized AI evaluation suites. Higher bars indicate superior performance in that domain.

MMLUGeneral knowledge & multi-task understanding
79.8%vs88.4%+8.6% GPT-6.1 Terra Pro
GPT-6.1 Terra
GPT-6.1 Terra Pro 🏆
HumanEvalPython coding & logic synthesis
78.0%vs87.6%+9.6% GPT-6.1 Terra Pro
GPT-6.1 Terra
GPT-6.1 Terra Pro 🏆
MATHComplex mathematical problem solving
55.2%vs65.4%+10.2% GPT-6.1 Terra Pro
GPT-6.1 Terra
GPT-6.1 Terra Pro 🏆
GPQAGraduate-level expert reasoning
40.6%vs46.8%+6.2% GPT-6.1 Terra Pro
GPT-6.1 Terra
GPT-6.1 Terra Pro 🏆
HellaSwagCommonsense reasoning and inference
82.8%vs86.0%+3.2% GPT-6.1 Terra Pro
GPT-6.1 Terra
GPT-6.1 Terra Pro 🏆
MT-BenchMulti-turn conversation flow quality
8.5%vs8.9%+0.3% GPT-6.1 Terra Pro
GPT-6.1 Terra
GPT-6.1 Terra Pro 🏆

GPT-6.1 Terra Quirks & Gotchas

No developer gotchas reported.

GPT-6.1 Terra Pro Quirks & Gotchas

No developer gotchas reported.

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