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Claude Opus 5.5 vs Nano Banana 2.1

Detailed technical comparison between Claude Opus 5.5 (Anthropic) 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

Claude Opus 5.5: 3 WinsvsNano Banana 2.1: 3 Wins
Context Leader

Claude Opus 5.5

1,000,000 tokens
Agentic Tool-Calling

Tie

Equal Capability
Lowest Latency (TTFT)

Tie

Equal Speed
Input Price Leader

Nano Banana 2.1

$1.50 / MTok
Anthropicactive

Claude Opus 5.5

Claude Opus 5.5 is an advanced artificial intelligence model engineered by Anthropic. Tailored for complex multi-step reasoning, programming synthesis, and extended document comprehension, Claude Opus 5.5 represents a key architectural iteration in the Anthropic model family. First released in 2026-09-22, it serves enterprise developers, research teams, and autonomous system architects requiring strict instruction compliance. Featuring an input capacity of 1,000,000 tokens (approximately 1,333 words), Claude Opus 5.5 processes multi-file code repositories, lengthy technical reports, and complex prompts in a single inference call.

View Claude Opus 5.5 Full Specs →
Googleactive

Nano Banana 2.1

Nano Banana 2.1 is an advanced artificial intelligence model engineered by Google. Tailored for complex multi-step reasoning, programming synthesis, and extended document comprehension, Nano Banana 2.1 represents a key architectural iteration in the Google model family. First released in 2026-10-06, it serves enterprise developers, research teams, and autonomous system architects requiring strict instruction compliance. Featuring an input capacity of 65,536 tokens (approximately 87 words), Nano Banana 2.1 processes multi-file code repositories, lengthy technical reports, and complex prompts in a single inference call.

View Nano Banana 2.1 Full Specs →

Technical Specifications

🏆 = Superior Spec
SpecificationClaude Opus 5.5Nano Banana 2.1
ProviderAnthropicGoogle
Context Window1,000,000 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 StabilityBeta Access (est.)Stable GA (est.)
API AvailableYesYes
Released Date2026-09-222026-10-06

API Pricing Comparison

Input Price per Million Tokens

Claude Opus 5.5

$4.00

Nano Banana 2.1

$1.50

Output Price per Million Tokens

Claude Opus 5.5

$20.00

Nano Banana 2.1

$7.50

💡 Cost Ratio: Nano Banana 2.1 is 2.7x cheaper per input token than Claude Opus 5.5.

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
80.4%vs81.2%+0.8% Nano Banana 2.1
Claude Opus 5.5
Nano Banana 2.1 🏆
HumanEvalPython coding & logic synthesis
78.6%vs79.4%+0.8% Nano Banana 2.1
Claude Opus 5.5
Nano Banana 2.1 🏆
MATHComplex mathematical problem solving
55.8%vs56.6%+0.8% Nano Banana 2.1
Claude Opus 5.5
Nano Banana 2.1 🏆
GPQAGraduate-level expert reasoning
41.2%vs38.6%+2.6% Claude Opus 5.5
Claude Opus 5.5 🏆
Nano Banana 2.1
HellaSwagCommonsense reasoning and inference
83.4%vs80.8%+2.6% Claude Opus 5.5
Claude Opus 5.5 🏆
Nano Banana 2.1
MT-BenchMulti-turn conversation flow quality
8.6%vs8.3%+0.3% Claude Opus 5.5
Claude Opus 5.5 🏆
Nano Banana 2.1

Claude Opus 5.5 Quirks & Gotchas

No developer gotchas reported.

Nano Banana 2.1 Quirks & Gotchas

No developer gotchas reported.

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