GPT-6.1 Terra vs Nano Banana 2 (Gemini 3.1 Flash Image)

Pick up to 3 models · pricing, context and capabilities · simulate your product cost

Data updated on November 14, 2026· 230 models

OpenAIGPT-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.

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Reasoning estimated
▲
Speed estimated
Input
Output
Context
▲1.1 M tokens
Max output
▲128 K
Input, $ per 1M tokens
$1.00
Output, $ per 1M tokens
$5.00
Cache read, $ per 1M
$0.050
Batch (input / output)
$0.500 / $2.50
Tool calling
Yes
Released
▲10/26/2026
Knowledge cutoff
2026-06-01
API id
openai/gpt-6.1-terra
GoogleBanana 2

Gemini 3.1 Flash Image, a.k.a.

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Reasoning estimated
Speed estimated
▲
Input
Output
Context
131 K tokens
Max output
33 K
Input, $ per 1M tokens
▲$0.500
Output, $ per 1M tokens
▲$3.00
Cache read, $ per 1M
$0.050
Batch (input / output)
—
Tool calling
No
Released
05/28/2026
Knowledge cutoff
2025-01
API id
google/gemini-3.1-flash-image
Third model (optional)
text image audio video PDF / file reasoning (1 to 5, estimated by family) speed (1 to 4, estimated by family)▲ best value among the selected

Which is the better API choice: GPT-6.1 Terra vs Nano Banana 2 (Gemini 3.1 Flash Image)?

  • Nano Banana 2 (Gemini 3.1 Flash Image): cheapest input (50% less than GPT-6.1 Terra)
  • Nano Banana 2 (Gemini 3.1 Flash Image): cheapest output
  • GPT-6.1 Terra: largest context (1.1 M)
  • GPT-6.1 Terra: the newest (10/26/2026)
  • GPT-6.1 Terra: most reasoning (estimated)
  • Nano Banana 2 (Gemini 3.1 Flash Image): the fastest (estimated)

Nano Banana 2 (Gemini 3.1 Flash Image) costs 50% less on input and 40% less on output than GPT-6.1 Terra ($0.500 / $3.00 versus $1.00 / $5.00 per million tokens). GPT-6.1 Terra accepts more context (1.1 M). GPT-6.1 Terra offers a batch tier at half price for jobs that do not need an immediate answer.

What would your product cost?

Estimate the monthly cost with your app's real volume. List prices, no cache or batch discounts.

GPT-6.1 Terra
$35.00/mo
Nano Banana 2 (Gemini 3.1 Flash Image)
$19.50/mo

With Nano Banana 2 (Gemini 3.1 Flash Image) you save $15.50 a month versus GPT-6.1 Terra (44% less).

The 6 cheapest for this scenario (chat, last 12 months)

  1. 1Lyria 3 Pro Preview Google$0.00
  2. 2Lyria 3 Clip Preview Google$0.00
  3. 3Qwen3.7 Flash Qwen$0.97
  4. 4DeepSeek V4.1 Flash DeepSeek$1.57
  5. 5DeepSeek V4 Flash 0731 DeepSeek$1.85
  6. 6Ministral 3 3B 2512 Mistral$1.90

Paste your prompt: tokens and cost per model

Rough estimate (about 4 characters per token). Nothing is sent to any server.

76tokens approx.287 characters

Cost of sending it 1,000 times (input only)

  1. 1Claude Haiku 5.5 Anthropic$0.008
  2. 2Nano Banana 2 (Gemini 3.1 Flash Image) Google$0.038
  3. 3GPT-6.1 Terra OpenAI$0.076
  4. 4Claude Sonnet 5.5 Anthropic$0.152
  5. 5Claude Opus 5.5 Anthropic$0.304
  6. 6Claude Opus 5 Anthropic$0.380
  7. 7Claude Fable 5.2 Anthropic$0.608
  8. 8Claude Fable 5.1 Anthropic$0.760

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Frequently asked questions

Which is the better API choice: GPT-6.1 Terra vs Nano Banana 2 (Gemini 3.1 Flash Image)?

Nano Banana 2 (Gemini 3.1 Flash Image) costs 50% less on input and 40% less on output than GPT-6.1 Terra ($0.500 / $3.00 versus $1.00 / $5.00 per million tokens). GPT-6.1 Terra accepts more context (1.1 M). GPT-6.1 Terra offers a batch tier at half price for jobs that do not need an immediate answer.

Which is cheaper: GPT-6.1 Terra and Nano Banana 2 (Gemini 3.1 Flash Image)?

Nano Banana 2 (Gemini 3.1 Flash Image) is cheaper: $0.500 per million input tokens and $3.00 per million output tokens, versus $1.00 / $5.00 for GPT-6.1 Terra.

Which has more context: GPT-6.1 Terra and Nano Banana 2 (Gemini 3.1 Flash Image)?

GPT-6.1 Terra accepts 1.1 M tokens of context; Nano Banana 2 (Gemini 3.1 Flash Image) accepts 131 K.

Which is newer: GPT-6.1 Terra and Nano Banana 2 (Gemini 3.1 Flash Image)?

GPT-6.1 Terra was released on 10/26/2026; Nano Banana 2 (Gemini 3.1 Flash Image) on 05/28/2026.

What would 10,000 requests a month cost with GPT-6.1 Terra and Nano Banana 2 (Gemini 3.1 Flash Image)?

With 1,500 input and 400 output tokens per request: GPT-6.1 Terra: $35.00; Nano Banana 2 (Gemini 3.1 Flash Image): $19.50 a month, at list price.

Where do the prices come from and how often are they updated?

From the public catalogs of OpenRouter, models.dev and LiteLLM, which publish each provider's list prices. They sync once a day and the last update date is shown above the comparison.

What does price per million tokens mean?

It is what the provider charges per million tokens you send (input) or the model generates (output). A token is roughly 4 characters. Output almost always costs more than input.

Sources: OpenRouter, models.dev and LiteLLM. Prices in USD per million tokens, list price, no volume discounts. Prompt tokens are an estimate; each provider's tokenizer may differ.