GPT-6.1 Terra vs Hermes 4 405B

Price, context window & benchmark comparison

OpenAI

GPT-6.1 Terra

OpenAI
$1.00 / $5.00
Input / Output · per 1M tokens
VS
Nous Research

Hermes 4 405B

Nous Research
$1.00 / $3.00
Input / Output · per 1M tokens
Compare different models
OpenAI
Nous Research
Verdict: Hermes 4 405B is 25% cheaper than GPT-6.1 Terra on a typical 3:1 input/output mix. GPT-6.1 Terra has the larger context window (1.1M vs 131K).
GPT-6.1 TerraHermes 4 405B
Input price / 1M$1.00$1.00
Output price / 1M$5.00$3.00
Blended price (3:1)$2.00$1.50
Cached input / 1M$0.05$0.20
Context window1.1M131K
Max output128K118K
Intelligence index51.3—
Coding index——
Providers7—
Best provider uptime (30m)100.0%—
Vision inputYesNo
ReasoningYesYes
Tool callingYesNo
Released2026-10-262025-08-26
Retirement——

Cost calculator

FAQ

Which is cheaper, GPT-6.1 Terra or Hermes 4 405B?

Hermes 4 405B is 25% cheaper than GPT-6.1 Terra on a typical 3:1 input/output mix.

GPT-6.1 Terra vs Hermes 4 405B: which has a bigger context window?

GPT-6.1 Terra: 1,050,000 tokens. Hermes 4 405B: 131,072 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: GPT-6.1 Terra ≈ $4,500, Hermes 4 405B ≈ $3,500.

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