Gemini 2.5 Flash-Lite vs GPT-5.4 Nano
Complete pricing and performance comparison between Google's Gemini 2.5 Flash-Lite and OpenAI's GPT-5.4 Nano.
Quick Verdict
Cheaper
Gemini 2.5 Flash-Lite
2.0x cheaper input, 3.1x cheaper output
Larger Context
Gemini 2.5 Flash-Lite
1.0M vs 400K
Pricing Comparison
| Spec | Gemini 2.5 Flash-Lite | GPT-5.4 Nano | Difference |
|---|---|---|---|
| Provider | OpenAI | ||
| Input / 1M tokens | $0.1 | $0.2 | Gemini 2.5 Flash-Lite is 50% more expensive |
| Output / 1M tokens | $0.4 | $1.25 | Gemini 2.5 Flash-Lite is 68% more expensive |
| Context Window | 1.0M | 400K | 3x difference |
| Max Output | 66K | 128K | |
| Tokenizer | cl100k_base | o200k_base |
Performance Benchmarks
| Metric | Gemini 2.5 Flash-Lite | GPT-5.4 Nano | Winner |
|---|---|---|---|
| Quality Index | 13 | -- | N/A |
| Output Speed | 336 tok/s | -- | N/A |
| Value (Quality/$) | 127.0 | -- | Higher = better value |
Benchmark data from Artificial Analysis. Quality Index is a composite score across reasoning, coding, and knowledge tasks.
Cost at Scale
Estimated cost at different usage levels (3:1 input-to-output token ratio, typical for chat).
| Usage | Gemini 2.5 Flash-Lite | GPT-5.4 Nano | Savings |
|---|---|---|---|
Single request 1K in / 300 out | $0.0002 | $0.0006 | Same |
10 requests 10K in / 3K out | $0.0022 | $0.0057 | Gemini 2.5 Flash-Lite saves $0.0035 |
100 requests 100K in / 30K out | $0.022 | $0.058 | Gemini 2.5 Flash-Lite saves $0.036 |
1,000 requests 1M in / 300K out | $0.220 | $0.575 | Gemini 2.5 Flash-Lite saves $0.355 |
10,000 requests 10M in / 3M out | $2.20 | $5.75 | Gemini 2.5 Flash-Lite saves $3.55 |
1M requests/mo 1B in / 300M out | $220.00 | $575.00 | Gemini 2.5 Flash-Lite saves $355.00 |
Pros & Cons
Gemini 2.5 Flash-Lite Strengths
- +Cheaper input tokens
- +Cheaper output tokens
- +Larger context window (1.0M vs 400K)
GPT-5.4 Nano Strengths
- +Higher max output tokens
When to Use Each Model
Choose Gemini 2.5 Flash-Lite for
- →Budget-conscious projects where cost is the primary factor
- →Long documents, large codebases, or multi-turn conversations
Choose GPT-5.4 Nano for
- →Generating long-form content or detailed code
Frequently Asked Questions
Which is cheaper, Gemini 2.5 Flash-Lite or GPT-5.4 Nano?
For input tokens, Gemini 2.5 Flash-Lite is 2.0x cheaper at $0.1/1M tokens. For output tokens, Gemini 2.5 Flash-Lite is 3.1x cheaper at $0.4/1M tokens. At typical usage (1M input + 300K output), Gemini 2.5 Flash-Lite costs $0.220 vs GPT-5.4 Nano at $0.575.
What's the context window difference?
Gemini 2.5 Flash-Lite supports 1.0M context (1,048,576 tokens), while GPT-5.4 Nano supports 400K (400,000 tokens). Gemini 2.5 Flash-Lite can handle 3x more context in a single request.
Which model has better benchmarks?
When should I choose Gemini 2.5 Flash-Lite over GPT-5.4 Nano?
Choose Gemini 2.5 Flash-Lite when you need: Cheaper input tokens, Cheaper output tokens, Larger context window (1.0M vs 400K). Choose GPT-5.4 Nano when you need: Higher max output tokens.
How much would 10,000 API requests cost?
At 1K input + 300 output tokens per request (typical chat): Gemini 2.5 Flash-Lite = $2.20, GPT-5.4 Nano = $5.75. At 10K input + 1K output per request (longer conversations): Gemini 2.5 Flash-Lite = $14.00, GPT-5.4 Nano = $32.50.
Related Comparisons
GPT-5.4 vs GPT-5.4 Nano
$2.5 vs $0.2 per 1M input
Gemini 2.5 Flash-Lite vs GPT-5.4
$0.1 vs $2.5 per 1M input
GPT-5.4 Mini vs GPT-5.4 Nano
$0.75 vs $0.2 per 1M input
Gemini 2.5 Flash-Lite vs GPT-5.4 Mini
$0.1 vs $0.75 per 1M input
GPT-5 vs GPT-5.4 Nano
$1.25 vs $0.2 per 1M input
GPT-5.4 Nano vs GPT-5 Mini
$0.2 vs $0.25 per 1M input