LLM Comparison 2026

Compare 13+ proprietary and 8+ open-source LLMs with detailed benchmarks, pricing, and use cases

13+
Models
6
Benchmarks
$0.10-$20
Input Pricing
2M
Max Context
GPT-5.4
OpenAI
256K

Latest frontier with best reasoning

Pricing
$20 / $80 per 1M
Benchmarks
MMLU: 94.2% | HumanEval: 94.8% | GSM8K: 99.5%
Strengths
  • State-of-the-art reasoning
  • Best math/logic
  • Superior code gen
  • Contextual understanding
Claude 4.6 Opus
Anthropic
500K

Best safety & enterprise reliability

Pricing
$18 / $90 per 1M
Benchmarks
MMLU: 93.8% | HumanEval: 93.6% | GSM8K: 98.8%
Strengths
  • Best safety (99/100)
  • Extended thinking
  • Large context (500K)
  • Production-ready
GPT-5.2
OpenAI
256K

Balanced variant with strong performance

Pricing
$4 / $12 per 1M
Benchmarks
MMLU: 92.1% | HumanEval: 93.5% | GSM8K: 97.4%
Strengths
  • Great value
  • Balanced performance
  • Production use
  • Fast response times
DeepSeek V3
DeepSeek
128K

Open-source powerhouse rivaling GPT-4

Pricing
$0.27 / $1.10 per 1M
Benchmarks
MMLU: 87.5% | HumanEval: 89.6% | GSM8K: 94.8%
Strengths
  • 1/10th GPT cost
  • MoE efficiency
  • Strong coding
  • MIT license
Gemini 3 Ultra
Google
2M

Largest context with 2M tokens

Pricing
$2 / $10 per 1M
Benchmarks
MMLU: 91.2% | HumanEval: 92.1% | GSM8K: 96.8%
Strengths
  • 2M context window
  • Long documents
  • Multimodal
  • Google integration
Llama 4 405B (Open Source)
Meta
128K

Largest open-weights model

Pricing
Free (self-host)
Benchmarks
MMLU: 89.5% | HumanEval: 89.8% | GSM8K: 94.2%
Strengths
  • 405B parameters
  • Open weights
  • Fine-tunable
  • No API costs at scale

Top Open Source LLMs

DeepSeek V3
671B MoE (37B active) | MIT License

Rivals GPT-4 performance at 1/10th the cost. 89.6% HumanEval, 87.5% MMLU.

View on HuggingFace
Llama 4 405B
405B Parameters | Llama License

Meta's flagship with 89.8% HumanEval. Best for fine-tuning and customization.

View on HuggingFace
Why Choose Open Source LLMs?
Cost Control

Self-host to eliminate per-token costs. At scale, 10-100x cheaper than API calls.

Data Privacy

Keep sensitive data on your infrastructure. No third-party data retention.

Customization

Fine-tune on your domain data. Modify behavior and add specialized knowledge.

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