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GPT-6.1 Terra Pro vs Nano Banana 2.1

Detailed technical comparison between GPT-6.1 Terra Pro (OpenAI) and Nano Banana 2.1 (Google). 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 Pro: 6 WinsvsNano Banana 2.1: 0 Wins
Context Leader

GPT-6.1 Terra Pro

1,050,000 tokens
Agentic Tool-Calling

Tie

Equal Capability
Lowest Latency (TTFT)

Tie

Equal Speed
Input Price Leader

GPT-6.1 Terra Pro

$1.00 / MTok
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 →
Googleactive

Nano Banana 2.1

Nano Banana 2.1 (Gemini Nano Banana 2.1) is Google's image generation and editing model on the Flash tier, succeeding Nano Banana 2 and Nano Banana Pro. It improves product recontextualization,...

View Nano Banana 2.1 Full Specs →

Technical Specifications

🏆 = Superior Spec
SpecificationGPT-6.1 Terra ProNano Banana 2.1
ProviderOpenAIGoogle
Context Window1,050,000 tokens🏆65,536 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 Date2026-10-262026-10-06

API Pricing Comparison

Input Price per Million Tokens

GPT-6.1 Terra Pro

$1.00

Nano Banana 2.1

$1.50

Output Price per Million Tokens

GPT-6.1 Terra Pro

$5.00

Nano Banana 2.1

$7.50

💡 Cost Ratio: GPT-6.1 Terra Pro is 1.5x cheaper per input token than Nano Banana 2.1.

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.

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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
88.4%vs81.2%+7.2% GPT-6.1 Terra Pro
GPT-6.1 Terra Pro 🏆
Nano Banana 2.1
HumanEvalPython coding & logic synthesis
87.6%vs79.4%+8.2% GPT-6.1 Terra Pro
GPT-6.1 Terra Pro 🏆
Nano Banana 2.1
MATHComplex mathematical problem solving
65.4%vs56.6%+8.8% GPT-6.1 Terra Pro
GPT-6.1 Terra Pro 🏆
Nano Banana 2.1
GPQAGraduate-level expert reasoning
46.8%vs38.6%+8.2% GPT-6.1 Terra Pro
GPT-6.1 Terra Pro 🏆
Nano Banana 2.1
HellaSwagCommonsense reasoning and inference
86.0%vs80.8%+5.2% GPT-6.1 Terra Pro
GPT-6.1 Terra Pro 🏆
Nano Banana 2.1
MT-BenchMulti-turn conversation flow quality
8.9%vs8.3%+0.5% GPT-6.1 Terra Pro
GPT-6.1 Terra Pro 🏆
Nano Banana 2.1

GPT-6.1 Terra Pro Quirks & Gotchas

No developer gotchas reported.

Nano Banana 2.1 Quirks & Gotchas

No developer gotchas reported.

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