Gemini 2.5 Pro vs GPT-4.1
A complete head-to-head: pricing, context window, benchmarks, modality coverage, and openness, with a programmatic verdict synthesized from the underlying data.
Updated
Gemini 2.5 Pro specs · GPT-4.1 specs- PriceGPT-4.1
GPT-4.1 is roughly 1.3× cheaper on output tokens ($8.00 vs $10.00 per 1M).
- Context windowGemini 2.5 Pro
Gemini 2.5 Pro accepts 2.1M tokens vs 1M, 2.1× the room for long documents and codebases.
- BenchmarksTie
Across 1 shared benchmarks the two models split wins evenly. Look at task-specific scores rather than the average.
- ModalitiesGemini 2.5 Pro
Gemini 2.5 Pro supports 4 modalities (text, vision, audio, video) vs 2 for GPT-4.1.
- OpennessTie
Both are closed-weight, API-only.
On balance Gemini 2.5 Pro edges ahead, winning 2 of 5 categories against GPT-4.1's 1. GPT-4.1 is roughly 1.3× cheaper on output tokens ($8.00 vs $10.00 per 1M). Gemini 2.5 Pro accepts 2.1M tokens vs 1M, 2.1× the room for long documents and codebases.
Across 1 shared benchmarks the two models split wins evenly. Look at task-specific scores rather than the average. They differ in modality coverage, Gemini 2.5 Pro handles text, vision, audio, video while GPT-4.1 handles text, vision, which can be the deciding factor before you even look at benchmarks. Both are closed-weight, API-only.
Both shipped within roughly a month of each other in 2025, so they share the same generation of training data and tooling. Gemini 2.5 Pro is usually picked for long context and rag workloads, while GPT-4.1 sees more deployments in long context and rag. If pricing matters more than every last benchmark point, run the numbers in the calculator below before committing.
Side-by-side specs
| Spec | Gemini 2.5 Pro | GPT-4.1 |
|---|---|---|
| Provider | OpenAI | |
| Released | Mar 2025 | Apr 2025 |
| Modalities | text, vision, audio, video | text, vision |
| Context window | 2.1M tokens | 1M tokens |
| Max output | , | 32.8K tokens |
| Input · 1M | $1.25 / 1M tokens | $2.00 / 1M tokens |
| Output · 1M | $10.00 / 1M tokens | $8.00 / 1M tokens |
| Knowledge cutoff | 2025-01 | 2024-06 |
| Open weights | No | No |
| API available | Yes | Yes |
Pricing at scale
What you'd actually pay at typical workloads. Numbers come from each model's published per-million-token rates.
- Light usage, 100k in / 50k out per day$18.75 vs $18.00
- Heavy usage, 1M in / 500k out per day$188 vs $180
- RAG workload, 5M in / 200k out per day$248 vs $348
Light usage, 100k in / 50k out per day: $18.75 vs $18.00 per month, model B comes out ahead. Heavy usage, 1M in / 500k out per day: $188 vs $180 per month, model B comes out ahead. RAG workload, 5M in / 200k out per day: $248 vs $348 per month, model A comes out ahead.
Estimated spend for the listed models at your usage. Numbers are derived from each model's published per-million-token rates.
- Gemini 2.5 Pro$0.625
- GPT-4.1$0.600
Benchmarks compared
Only sourced numbers. Where a benchmark is missing for one model we show the available value rather than fabricating the other.
- MMLU86.086.2
- HumanEval,90.6
- GPQA84.0
Gemini 2.5 Pro fits when…
- 2M-token context window
- Strong on long-document tasks
- Native multimodal handling
- Long-context tasks, handles 2.1M tokens vs 1M for GPT-4.1.
- Multimodal needs covering audio, video.
GPT-4.1 fits when…
- 1M-token context window, strong for long-doc workloads
- Mature SDK and tooling integrations
- Reliable JSON-mode and function-calling
- Cost-sensitive workloads, 1.3× cheaper than Gemini 2.5 Pro on output tokens.
Consider Gemini 3 Pro
Google's late-2025 flagship, set new benchmarks on long-context, vision, and reasoning at competitive pricing.
Frequently asked
Is Gemini 2.5 Pro or GPT-4.1 cheaper?
GPT-4.1 is cheaper at $8.00 / 1M tokens per million output tokens, vs $10.00 / 1M tokens for Gemini 2.5 Pro.Which has the larger context window?
Gemini 2.5 Pro accepts 2.1M tokens vs 1M for GPT-4.1.Is Gemini 2.5 Pro or GPT-4.1 better for coding?
Both Gemini 2.5 Pro and GPT-4.1 are competitive on coding benchmarks. See each model's individual spec page for HumanEval and SWE-bench scores where published. For an opinionated pick, consult our Best LLM for Coding ranking.Are either of these models open source?
Neither model ships open weights, both are accessible only via their respective providers' APIs.When were Gemini 2.5 Pro and GPT-4.1 released?
Gemini 2.5 Pro was released by Google on 2025-03-25. GPT-4.1 was released by OpenAI on 2025-04-14.
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