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GPT-6.1 Sol vs GPT-6.1 Terra

Detailed technical comparison between GPT-6.1 Sol (OpenAI) and GPT-6.1 Terra (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 Sol: 0 WinsvsGPT-6.1 Terra: 6 Wins
Context Leader

Tie

Equal Capacity
Agentic Tool-Calling

Tie

Equal Capability
Lowest Latency (TTFT)

Tie

Equal Speed
Input Price Leader

GPT-6.1 Terra

$1.00 / MTok
OpenAIactive

GPT-6.1 Sol

GPT-6.1 Sol is an upgrade to GPT-6 Sol from OpenAI, positioned below the flagship GPT-6 Astra in the GPT-6 series. It is suited for agentic coding, computer use, document-heavy professional...

View GPT-6.1 Sol Full Specs →
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 →

Technical Specifications

🏆 = Superior Spec
SpecificationGPT-6.1 SolGPT-6.1 Terra
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 StabilityStable releaseNot verified
API AvailableYesYes
Released Date2026-09-292026-10-26

API Pricing Comparison

Input Price per Million Tokens

GPT-6.1 Sol

$2.00

GPT-6.1 Terra

$1.00

Output Price per Million Tokens

GPT-6.1 Sol

$10.00

GPT-6.1 Terra

$5.00

💡 Cost Ratio: GPT-6.1 Terra is 2.0x cheaper per input token than GPT-6.1 Sol.

Want to test both models live?

Run side-by-side prompt benchmarks in our dynamic multi-model Sandbox. Compare execution speeds, latency metrics, and compute actual costs in real-time.

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
79.0%vs79.8%+0.8% GPT-6.1 Terra
GPT-6.1 Sol
GPT-6.1 Terra 🏆
HumanEvalPython coding & logic synthesis
77.2%vs78.0%+0.8% GPT-6.1 Terra
GPT-6.1 Sol
GPT-6.1 Terra 🏆
MATHComplex mathematical problem solving
54.4%vs55.2%+0.8% GPT-6.1 Terra
GPT-6.1 Sol
GPT-6.1 Terra 🏆
GPQAGraduate-level expert reasoning
39.8%vs40.6%+0.8% GPT-6.1 Terra
GPT-6.1 Sol
GPT-6.1 Terra 🏆
HellaSwagCommonsense reasoning and inference
82.0%vs82.8%+0.8% GPT-6.1 Terra
GPT-6.1 Sol
GPT-6.1 Terra 🏆
MT-BenchMulti-turn conversation flow quality
8.5%vs8.5%+0.1% GPT-6.1 Terra
GPT-6.1 Sol
GPT-6.1 Terra 🏆

GPT-6.1 Sol Quirks & Gotchas

No developer gotchas reported.

GPT-6.1 Terra Quirks & Gotchas

No developer gotchas reported.

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