GPT-5.4 vs Gemini 2.5 Flash Lite
Comprehensive comparison of OpenAI's GPT-5.4 and Google's Gemini 2.5 Flash Lite. Pricing, specs, benchmarks, use cases, and recommendations.
Quick Verdict
Overview
GPT-5.4 (OpenAI) and Gemini 2.5 Flash Lite (Google) represent two different approaches to AI. GPT-5.4 is a gpt5-class model with 256K context, priced at $2.50/$15.00 per 1M tokens. Gemini 2.5 Flash Lite is a gemini-class model with 1M context, priced at $0.10/$0.40 per 1M tokens.
Balanced performance and cost. The recommended model for most production workloads.. Google's most affordable Gemini model. Ideal for high-volume, cost-sensitive applications like classification and simple extraction.. Both are available through AI API Hub with USDT and USDC payments — no credit card required.
At current pricing, using Gemini 2.5 Flash Lite saves you approximately Save $2.40 per 1M input tokens versus the other, making it the more budget-friendly choice for high-volume applications.
Cost Calculator
Technical Specifications Comparison
| Specification | GPT-5.4 | Gemini 2.5 Flash Lite |
|---|---|---|
| Provider | OpenAI | |
| Release Date | 2026-05 | 2026-05 |
| Context Window | 256K | 1M |
| Max Output Tokens | 16,384 | 8,192 |
| Input Price | $2.50/1M | $0.10/1M |
| Output Price | $15.00/1M | $0.40/1M |
| Vision | Yes ✓ | Yes ✓ |
| Audio | No | No |
| Function Calling | Yes ✓ | No |
| JSON Mode | Yes ✓ | No |
| Streaming | Yes ✓ | Yes ✓ |
| Fine Tuning | Yes ✓ | No |
| Rate Limits | 10K RPM | 10K RPM |
| Status | active | active |
Pros & Cons
GPT-5.4
- ✓Excellent performance
- ✓Lower cost than 5.5
- ✓Daily workhorse
- ✗Not the latest frontier
- ✗Higher cost than DeepSeek
Gemini 2.5 Flash Lite
- ✓Free tier
- ✓Ultra-low cost
- ✓1M context
- ✓Fast inference
- ✗Weaker quality
- ✗Limited feature set
Benchmarks
| Benchmark | GPT-5.4 | Gemini 2.5 Flash Lite |
|---|---|---|
| MMLU | N/A | N/A |
| GPQA | N/A | N/A |
| SWE-bench | N/A | N/A |
| HumanEval | N/A | N/A |
| GSM8K | N/A | N/A |
| MATH | N/A | N/A |
| MMMU | N/A | N/A |
Best For
| Use Case | GPT-5.4 | Gemini 2.5 Flash Lite |
|---|---|---|
| Coding | ★ | ★ |
| AI Agents | ★★★ | ★★ |
| Research | ★ | ★ |
| Writing | ★★★ | ★★★ |
| Enterprise | ★★★ | ★ |
Performance & Pricing Analysis
Performance: GPT-5.4 delivers excellent performance with 256K context. Gemini 2.5 Flash Lite delivers free tier with 1M context. Both models serve different audiences — GPT-5.4 targets excellent performance and lower cost than 5.5, while Gemini 2.5 Flash Lite targets free tier and ultra-low cost.
Pricing: At $2.50/$15.00 vs $0.10/$0.40 per 1M tokens, Gemini 2.5 Flash Lite is the more affordable choice. For a typical workload of 1M requests/month at 1K tokens input and 500 tokens output, Gemini 2.5 Flash Lite saves approximately $9.70/month.
Recommendation: Choose Gemini 2.5 Flash Lite if you prioritize cost-efficiency. Both models are available through AI API Hub with USDT/USDC payments and instant activation. Start with $5 and access all models through one API key.
Frequently Asked Questions
What is the difference between GPT-5.4 and Gemini 2.5 Flash Lite?
GPT-5.4 is OpenAI's gpt5 model with 256K context at $2.50/1M input. Gemini 2.5 Flash Lite is Google's gemini model with 1M context at $0.10/1M input. They serve different ecosystems — access both through AI API Hub with one key.
Which model is cheaper?
Gemini 2.5 Flash Lite is cheaper at $0.10/1M input vs $2.50/1M for GPT-5.4. You save $2.40 per 1M input tokens with Gemini 2.5 Flash Lite.
Which model is better for coding?
Coding capabilities vary by model. Check the features section above for details.
Which model has a larger context window?
Gemini 2.5 Flash Lite has a larger context window (1M vs 256K) — $310% more capacity.
Can both models use function calling?
Function calling support varies. GPT-5.4 supports it. Gemini 2.5 Flash Lite does not support it.
How much does GPT-5.4 cost?
GPT-5.4 costs $2.50/1M input tokens and $15.00/1M output tokens with 256K context. Pay-as-you-go, no minimum. Sign up at AI API Hub and start with $5.
How much does Gemini 2.5 Flash Lite cost?
Gemini 2.5 Flash Lite costs $0.10/1M input tokens and $0.40/1M output tokens with 1M context. Pay-as-you-go, no minimum. Sign up at AI API Hub and start with $5.
Which model is better for enterprise use?
Neither model targets the premium enterprise tier exclusively. For enterprise needs, consider flagship models with higher quality guarantees.
Which model is better for AI agents?
Agent capabilities vary. Check the function calling support in the specs table above.
How do I access these APIs?
Access both GPT-5.4 and Gemini 2.5 Flash Lite through AI API Hub: (1) Register at api.apiyihe.org/register?aff=8JZC, (2) Deposit USDT/USDC, (3) Get your API key, (4) Use OpenAI-compatible endpoint https://api.apiyihe.org/v1 with model names "gpt-5.4" or "gemini-2.5-flash-lite". One API key gives access to all models.
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