GPT-4.1 mini vs Gemini 2.5 Flash
Side-by-side comparison of API pricing, specs, benchmarks, and capabilities
| Specification |
by OpenAI
|
by Google
|
|---|---|---|
| Overview | ||
| Status | Current budget | Deprecated budget |
| Released | Apr 14, 2025 | Jun 17, 2025 |
| Pricing per million tokens | ||
| Input | $0.400/Mtok | $0.300/Mtok |
| Output | $1.60/Mtok | $2.50/Mtok |
| Blended avg | $0.700/Mtok | $0.850/Mtok |
| Cached input | $0.100/Mtok | — |
| Specifications | ||
| Context window | 1M tokens | 1M tokens |
| Parameters | Proprietary | Proprietary |
| Speed (TPS) | — | — |
| Modalities | ||
| Input |
textimage
|
textimageaudiovideo
|
| Benchmarks source: Vellum LLM Leaderboard | ||
| Avg benchmark score | 55.7 | 50.2 |
| Perf / dollar | 79.6 | 59.1 |
| GPQA Diamond | 65 | 78.3 |
| SWE-Bench Verified | 30 vendor | 38 |
| Humanity's Last Exam | 12 vendor | 12.1 |
| ARC-AGI 2 | 15 vendor | 15 |
| AIME 2025 | 40 vendor | 78 |
| MMMLU | 78.5 | 78 |
| MATH 500 | 70 vendor | 72 |
| Terminal-Bench 2.1 | — | 16.9 |
| LiveCodeBench | — | 63.5 |
| BFCL | 70 vendor | — |
| HumanEval | 23.6 | — |
| Independent composite scores each on its own scale — not part of the average above | ||
| LMSYS Chatbot Arena | 1382.8 ELO | 1410.2 ELO |
| AA Intelligence Index | 14.8 | — |
| AA Agentic Index | 1.8 | — |
| AA-Omniscience Index (−100–100) | -53.6 | — |
| Providers | ||
| Available from |
OpenAI — $0.400/$1.60/Mtok
|
Google — $0.300/$2.50/Mtok
|
Cost at scale
1M tokens · 50/50 input/output| Volume | GPT-4.1 mini | Gemini 2.5 Flash | Savings |
|---|---|---|---|
| 1M tokens | $0.7 | $0.85 | $0.15 (17.6%) |
| 10M tokens | $7 | $8.5 | $1.5 (17.6%) |
| 100M tokens | $70 | $85 | $15 (17.6%) |
| 1000M tokens | $700 | $850 | $150 (17.6%) |
When to pick which
distilled from the pricing and spec data above- cost dominates: $0.700/Mtok blended vs $0.850 — 17.6% less on the same 50/50 token mix
- your workload re-reads context (agents, RAG, long chats): cached input costs $0.100/Mtok — 75% off its list input price, a discount Gemini 2.5 Flash doesn't offer
- raw capability matters more than price: 55.7 vs 50.2 average benchmark score
- this pairing gives Gemini 2.5 Flash no edge on price, context, cache discount, or measured performance — pick it only for qualitative fit (ecosystem, compliance, model behavior on your prompts)
Price movement
recorded changes since we began tracking each model · last checked Aug 15, 2026| Model | Changes | Latest move | Old → new $/M |
|---|---|---|---|
| GPT-4.1 mini | 0 | — no move | Stable since we began tracking — no change recorded |
| Gemini 2.5 Flash | 2 | price rise on Jul 4, 2026 | $0.075/$0.3 → $0.3/$2.5/Mtok |
The cheaper option here — GPT-4.1 mini costs $0.700/Mtok blended on OpenAI.
Summary
GPT-4.1 mini by OpenAI costs $0.400/Mtok input and $1.60/Mtok output, with a 1M-token context window. It supports text, image input.
Gemini 2.5 Flash by Google costs $0.300/Mtok input and $2.50/Mtok output, with a 1M-token context window. It supports text, image, audio, video input.
On a blended cost basis, GPT-4.1 mini is 17.6% cheaper than Gemini 2.5 Flash.
On benchmarks, GPT-4.1 mini scores higher (55.7 vs 50.2) on average. In terms of value, GPT-4.1 mini has better performance per dollar (79.6 vs 59.1).
Note: Pricing is per million tokens. Actual costs vary with usage patterns, prompt caching, and batch discounts. Always verify against official provider pricing pages.