Compare

GPT-5 vs GPT-5.6 Sol

Pricing per million tokens, context window, capabilities — pulled from each provider's public docs. All 2 are available via the same AIgateway OpenAI-compatible endpoint; flip the model string to switch.

Search2/4
GPT-5
openai/gpt-5
GPT-5.6 Sol
openai/gpt-5.6-sol
Provider
OpenAI
OpenAI
Family
GPT-5
GPT-5
Modality
text
text
Context window
128,000 tok
1,050,000 tok
Max output
16,384 tok
128,000 tok
Released
2026-05-22
2026-07-10
License
Proprietary
Proprietary
Input price
$1.25 /1M
$5.00 /1M
Output price
$10.00 /1M
$30.00 /1M
Tools
yes
yes
Streaming
yes
yes
Vision
yes
yes
JSON mode
yes
yes
Reasoning
yes
yes
Prompt caching
Batch API
Try it
Open in playground →
Open in playground →
GPT-5
openai/gpt-5
Full spec →

OpenAI's model excelling at coding, writing, and reasoning.

Strengths
  • General-purpose chat
  • Long context
  • Tool use
Use cases
ChatbotsContent generationAgentic workflows
GPT-5.6 Sol
openai/gpt-5.6-sol
Full spec →

GPT-5.6 Sol is OpenAI's frontier GPT-5.6 model for complex professional work, using the Responses API for reasoning and stateful context management.

Strengths
  • General-purpose chat
  • Long context
  • Tool use
Use cases
ChatbotsContent generationAgentic workflows

Compare with another

Claude Opus 5 vs GPT-5.6 Sol
anthropic/claude-opus-5 · openai/gpt-5.6-sol
Grok 4.5 vs GPT-5.6 Sol
xai/grok-4.5 · openai/gpt-5.6-sol
Kimi K3 vs GPT-5.6 Sol
moonshot/kimi-k3 · openai/gpt-5.6-sol
Gemini 3.6 Flash vs GPT-5.6 Sol
google/gemini-3.6-flash · openai/gpt-5.6-sol
GPT-5.6 Sol vs Claude Fable 5
openai/gpt-5.6-sol · anthropic/claude-fable-5
GPT-5.6 Sol vs DeepSeek V4 Pro
openai/gpt-5.6-sol · deepseek/deepseek-v4-pro
GPT-5.6 Sol vs Gemini 3.1 Pro
openai/gpt-5.6-sol · google/gemini-3.1-pro
GPT-5.6 Sol vs MiniMax M3
openai/gpt-5.6-sol · minimax/m3
GPT-5.6 Sol vs Kimi-K2.6
openai/gpt-5.6-sol · moonshot/kimi-k2.6
SWITCH BETWEEN THEM

One key, all 2, one line different.

from openai import OpenAI

client = OpenAI(
    base_url="https://api.aigateway.sh/v1",
    api_key="sk-aig-...",
)

# GPT-5
client.chat.completions.create(
    model="openai/gpt-5",
    messages=[{"role":"user","content":"hello"}],
)

# GPT-5.6 Sol
client.chat.completions.create(
    model="openai/gpt-5.6-sol",
    messages=[{"role":"user","content":"hello"}],
)
Get an AIgateway keyRun an eval on these →