AI Models · Open-Source vs Paid

XIMiMo-V2.5-Pro Open vs GPT-5.6 Terra Paid

MiMo-V2.5-Pro vs GPT-5.6 Terra compared — price per token, context window, multimodality, openness and which to choose. Can the open-source model replace the paid one? Full 2026 breakdown.

Prices & specs refreshed from live data · olud.ai

Open-model prices = cheapest provider via OpenRouter; official maker rates may be higher.

XIMiMo-V2.5-ProOpenXiaomi
$0.44 /M input
$0.87 /M outputNo per-token fees if you self-host
TypeOpen-weight
Context window1.1M tokens
MultimodalNo
Self-hostYes
GPT-5.6 TerraPaidOpenAI
$2 /M input
$12 /M outputManaged API (no infra to run)
TypeProprietary
Context window1.1M tokens
MultimodalYes
Self-hostNo
Choose MiMo-V2.5-Pro if you want to self-host, keep your data private and skip per-token fees — it's open-weight and runs on your own hardware. Choose GPT-5.6 Terra if you want frontier capability through a managed API with zero infrastructure to run.

MiMo-V2.5-Pro vs GPT-5.6 Terra specs

SpecMiMo-V2.5-ProGPT-5.6 TerraWinner
MakerXiaomiOpenAI
TypeOpen-weightProprietaryXIMiMo-V2.5-Pro
Context window1.1M tokens1.1M tokens= Tie
Input price$0.44/M · free self-host$2/MXIMiMo-V2.5-Pro
Output price$0.87/M · free self-host$12/MXIMiMo-V2.5-Pro
Vision / multimodalNoYesGPT-5.6 Terra
Tool / function callingYesYes= Tie
Self-hostableYesNo (API only)XIMiMo-V2.5-Pro
LicenseOpen weightsProprietaryXIMiMo-V2.5-Pro

Price gap & when to choose each

14×cheaper per output token

MiMo-V2.5-Pro is ~14× cheaper than GPT-5.6 Terra on output tokens ($0.87 vs $12 per M tokens).

XIChoose MiMo-V2.5-Pro if…
  • You want to self-host or run on your cloud
  • You prioritize data privacy & control
  • You want the lowest operating costs
  • You are building open or reproducible AI
Choose GPT-5.6 Terra if…
  • You want frontier performance through a managed API
  • You value reliability & ecosystem
  • You don't want to manage infrastructure

Feature comparison

CapabilityMiMo-V2.5-ProGPT-5.6 Terra
Open weights (downloadable)
Self-hostable
Runs fully offline
Vision / multimodal
Tool / function calling
1M+ context window

Benchmarks: MiMo-V2.5-Pro vs GPT-5.6 Terra

Independent benchmark scores measured by Artificial Analysis. Higher is better (except latency).

MiMo-V2.5-Pro delivers 5.2× more intelligence per dollar.
MiMo-V2.5-Pro
GPT-5.6 Terra
Intelligence index
26.4
42.3
Coding index
60.2
76.7
GPQA
86.6%
92.5%
Humanity's Last Exam
35.7%
42.9%
Long Context Reasoning
79.7%
83%
SciCode
50.6%
55%
IFBench
79.9%
71.2%
τ²-Bench
94.2%
86.3%
τ-Bench Banking
9.9%
40.2%
Terminal-Bench
65.2%
88%
Terminal-Bench Hard
43.2%
57.6%
Speed
44.4 tok/s
115.5 tok/s
Latency
7.72s
107.22s
Intelligence per $
48.5
9.4

Benchmark data by Artificial Analysis.

How MiMo-V2.5-Pro and GPT-5.6 Terra score

🏆 Best value & openness: MiMo-V2.5-Pro (4.7 vs 3.2 / 5)
CriterionMiMo-V2.5-ProGPT-5.6 Terra
Cost-efficiency5.03.5
Context window5.05.0
Openness5.01.5
Self-hosting5.01.0
Multimodality3.55.0

Scores come from live data — output price (cost), context length, open vs closed weights (openness & self-hosting) and vision/tool support (multimodality). Raw task quality isn't scored here; it depends on your benchmark — see the verdict.

What each model is

MiMo-V2.5-Pro Open

Xiaomi · Open-weight

MiMo-V2.5-Pro is Xiaomi’s flagship model, delivering strong performance in general agentic capabilities, complex software engineering, and long-horizon tasks, with top rankings on benchmarks such as ClawEval, GDPVal, and SWE-bench Pro....

GPT-5.6 Terra Paid

OpenAI · Proprietary

GPT-5.6 Terra is a balanced model in OpenAI's GPT-5.6 series, positioned between the flagship Sol tier and the cost-efficient Luna tier. It is suited for everyday coding, reasoning, and agentic...

Other models in these families

These variants are tracked but not compared here — one page per family keeps the comparison readable.

Other variants tracked
MiMo-V2.5

Frequently asked questions

Is MiMo-V2.5-Pro as good as GPT-5.6 Terra?

MiMo-V2.5-Pro is open-weight and competitive on many tasks, but GPT-5.6 Terra may still lead on the hardest reasoning and agentic work. The gap keeps narrowing — benchmark both on your actual use case before deciding.

Can I run MiMo-V2.5-Pro locally?

Yes. MiMo-V2.5-Pro has open weights, so you can self-host it on your own GPUs or run it via a low-cost API. GPT-5.6 Terra is API-only and cannot be self-hosted.

How much cheaper is MiMo-V2.5-Pro?

MiMo-V2.5-Pro costs $0.87/M output vs $12/M for GPT-5.6 Terra — roughly 14x cheaper via API, and free if you self-host.

MiMo-V2.5-Pro vs GPT-5.6 Terra — which should I pick in 2026?

Choose MiMo-V2.5-Pro if you want to self-host, keep your data private and skip per-token fees — it's open-weight and runs on your own hardware. Choose GPT-5.6 Terra if you want frontier capability through a managed API with zero infrastructure to run.

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