AI Models · Paid vs Paid

GPT-6 Astra Pro Paid vs Nano Banana 2.1 Paid

GPT-6 Astra Pro vs Nano Banana 2.1 compared — price per token, context window, multimodality, openness and which to choose. Full 2026 breakdown.

GPT-6 Astra Pro — full profile ›  ·  Nano Banana 2.1 — full profile ›

Prices & specs refreshed from live data · olud.ai

Open-model prices = cheapest provider via OpenRouter; official maker rates may be higher.

GPT-6 Astra ProPaidOpenAI
$10 /M input
$50 /M outputManaged API (no infra to run)
TypeProprietary
Context window1.1M tokens
MultimodalYes
Self-hostNo
Nano Banana 2.1PaidGoogle
$1.5 /M input
$7.5 /M outputManaged API (no infra to run)
TypeProprietary
Context window66K tokens
MultimodalYes
Self-hostNo
Choose Nano Banana 2.1 for the lower output price ($7.5/M vs $50/M). Choose GPT-6 Astra Pro if you need the larger 1.1M context window.

GPT-6 Astra Pro vs Nano Banana 2.1 specs

SpecGPT-6 Astra ProNano Banana 2.1Winner
MakerOpenAIGoogle–
TypeProprietaryProprietary–
Context window1.1M tokens66K tokensGPT-6 Astra Pro
Input price$10/M$1.5/MNano Banana 2.1
Output price$50/M$7.5/MNano Banana 2.1
Vision / multimodalYesYes= Tie
Tool / function callingYesYes= Tie
Self-hostableNo (API only)No (API only)–
LicenseProprietaryProprietary–

Price gap & when to choose each

6.7×cheaper per output token

Nano Banana 2.1 is ~6.7× cheaper than GPT-6 Astra Pro on output tokens ($7.5 vs $50 per M tokens).

Choose GPT-6 Astra Pro if…
  • You want frontier performance through a managed API
  • You need the longer 1.1M context window
  • You value reliability & ecosystem
  • You don't want to manage infrastructure
Choose Nano Banana 2.1 if…
  • You want frontier performance through a managed API
  • You want the lower output price
  • You value reliability & ecosystem
  • You don't want to manage infrastructure

Feature comparison

CapabilityGPT-6 Astra ProNano Banana 2.1
Open weights (downloadable)✗✗
Self-hostable✗✗
Runs fully offline✗✗
Vision / multimodal✓✓
Tool / function calling✓✓
1M+ context window✓✗

How GPT-6 Astra Pro and Nano Banana 2.1 score

🤝 Neck and neck on these criteria (2.9 vs 2.9 / 5).
CriterionGPT-6 Astra ProNano Banana 2.1
Cost-efficiency2.04.0
Context window5.03.0
Openness1.51.5
Self-hosting1.01.0
Multimodality5.05.0

Scores come from live data — output price (cost), context length, open vs closed weights (openness & self-hosting) and vision/tool support (multimodality). Raw task quality isn't scored here; it depends on your benchmark — see the verdict.

What each model is

GPT-6 Astra Pro Paid

OpenAI · Proprietary

GPT-6 Astra Pro is the same underlying model as [GPT-6 Astra](https://openrouter.ai/openai/gpt-6-astra), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. **Cost note:** pro mode spends far more...

Nano Banana 2.1 Paid

Google · Proprietary

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,...

Frequently asked questions

GPT-6 Astra Pro vs Nano Banana 2.1 — which is cheaper?

Nano Banana 2.1 is cheaper on output ($7.5/M vs $50/M).

Which has the larger context window?

GPT-6 Astra Pro offers the larger context window (1.1M tokens).

GPT-6 Astra Pro vs Nano Banana 2.1 — which should I pick in 2026?

Choose Nano Banana 2.1 for the lower output price ($7.5/M vs $50/M). Choose GPT-6 Astra Pro if you need the larger 1.1M context window.

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