Compare

GPT-5.6 Sol vs Gemini 2.5 Flash

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.

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GPT-5.6 Sol
openai/gpt-5.6-sol
Gemini 2.5 Flash
google/gemini-2.5-flash
Provider
OpenAI
Google
Family
GPT-5
Modality
text
text
Context window
1,050,000 tok
1,000,000 tok
Max output
128,000 tok
8,192 tok
Released
2026-07-10
2026-05-22
License
Proprietary
Proprietary
Input price
$2.00 /1M
$0.300 /1M
Output price
$10.00 /1M
$2.50 /1M
Tools
yes
—
Streaming
yes
yes
Vision
yes
yes
JSON mode
yes
—
Reasoning
yes
—
Prompt caching
—
—
Batch API
—
—
Try it
Open in playground →
Open in playground →
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
Gemini 2.5 Flash
google/gemini-2.5-flash
Full spec →

Google's fast multimodal Gemini 2.5 model with strong reasoning and a 1M token context window.

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

Compare with another

Claude Sonnet 5.5 vs GPT-5.6 Sol
anthropic/claude-sonnet-5.5 · openai/gpt-5.6-sol
Claude Sonnet 5.5 vs Gemini 2.5 Flash
anthropic/claude-sonnet-5.5 · google/gemini-2.5-flash
GPT-6.1 Sol vs GPT-5.6 Sol
openai/gpt-6.1-sol · openai/gpt-5.6-sol
GPT-6.1 Sol vs Gemini 2.5 Flash
openai/gpt-6.1-sol · google/gemini-2.5-flash
Claude Opus 5.5 vs GPT-5.6 Sol
anthropic/claude-opus-5.5 · openai/gpt-5.6-sol
Claude Opus 5.5 vs Gemini 2.5 Flash
anthropic/claude-opus-5.5 · google/gemini-2.5-flash
Grok 4.7 vs GPT-5.6 Sol
xai/grok-4.7 · openai/gpt-5.6-sol
Grok 4.7 vs Gemini 2.5 Flash
xai/grok-4.7 · google/gemini-2.5-flash
Glm-5.3 vs GPT-5.6 Sol
zai-org/glm-5.3 · openai/gpt-5.6-sol
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-5.6 Sol
client.chat.completions.create(
    model="openai/gpt-5.6-sol",
    messages=[{"role":"user","content":"hello"}],
)

# Gemini 2.5 Flash
client.chat.completions.create(
    model="google/gemini-2.5-flash",
    messages=[{"role":"user","content":"hello"}],
)
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