Which is cheaper, GPT-6.1 Terra and MiMo V2.6 Pro?

MiMo V2.6 Pro has the lowest input price. Per 1M input tokens: GPT-6.1 Terra from $1.00 and MiMo V2.6 Pro from $0.39.

Which has the larger context window, GPT-6.1 Terra and MiMo V2.6 Pro?

GPT-6.1 Terra has the largest context window: GPT-6.1 Terra 1,050,000 tokens and MiMo V2.6 Pro 1,048,576 tokens.

Which is smarter, GPT-6.1 Terra and MiMo V2.6 Pro?

GPT-6.1 Terra scores highest on the Artificial Analysis Intelligence Index: GPT-6.1 Terra 51.3 and MiMo V2.6 Pro 29.9.

Can I switch between GPT-6.1 Terra and MiMo V2.6 Pro without changing my code?

Yes. All of them are served through FastRouter's OpenAI-compatible API, so switching is a change of the model parameter (openai/gpt-6.1-terra, xiaomi/mimo-v2.6-pro).

GPT-6.1 Terra vs MiMo V2.6 Pro

Side-by-side pricing per provider, context window, benchmark scores and speed, all on one OpenAI-compatible API.

Estimate monthly cost for these models

GPT-6.1 Terra OpenAIopenai/gpt-6.1-terra

MiMo V2.6 Pro Xiaomixiaomi/mimo-v2.6-pro

Creator

OpenAI

Xiaomi

Released

Oct 26, 2026

Sep 21, 2026

Context window

1.05M

Max output

128K

131K

Input / 1MLowest provider price

$1.00

$0.39

Output / 1MLowest provider price

$5.00

$0.78

Providers

IntelligenceArtificial Analysis index

51.3

29.9

Accepts

Text, Image, Files

Text, Image, Video, Audio

Produces

Text

Tool calling

Yes

Structured output

Yes

Reasoning

Yes

GPT-6.1 Terra vs MiMo V2.6 Pro: summary

GPT-6.1 Terra and MiMo V2.6 Pro are both available through FastRouter's OpenAI-compatible API, so switching between them is a change of model id, not a new integration.

GPT-6.1 Terra, from OpenAI, has a 1,050,000-token context window, costs $1.00/1M input and $5.00/1M output tokens and scores 51.3 on the Artificial Analysis Intelligence Index.

MiMo V2.6 Pro, from Xiaomi, has a 1,048,576-token context window, costs $0.39/1M input and $0.78/1M output tokens and scores 29.9 on the Artificial Analysis Intelligence Index.

MiMo V2.6 Pro is the cheapest on input, 2.6× cheaper than the next model, GPT-6.1 Terra has the largest context window and GPT-6.1 Terra scores highest for intelligence.

Switch with one line

client = OpenAI(base_url="https://api.fastrouter.ai/api/v1", api_key="<FASTROUTER_API_KEY>") client.chat.completions.create(model="openai/gpt-6.1-terra", messages=[...]) # or client.chat.completions.create(model="xiaomi/mimo-v2.6-pro", messages=[...])

Full API docs

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More comparisons

Benchmark scores sourced from ArtificialAnalysis