New Models Added: GPT-5.6 Family and Grok 4.5
Date: 2026-07-10 / (1405-04-19)
Summary
AvalAI adds OpenAI's GPT-5.6 Sol, Terra, and Luna models and xAI's Grok 4.5 flagship model. These models expand the platform's options for agentic coding, long-context reasoning, knowledge work, and cost-tiered production routing across Chat Completions, Responses, and Messages-compatible workflows where supported.
Details
OpenAI GPT-5.6 Family
OpenAI's GPT-5.6 family is now available in three tiers:
gpt-5.6-sol: highest-capability GPT-5.6 model for difficult coding, expert analysis, tool-heavy workflows, and scientific reasoning.gpt-5.6-terra: balanced model for everyday production reasoning, agent workflows, and professional knowledge work.gpt-5.6-luna: cost-efficient model for high-volume reasoning, support, summarization, and document workflows.
Supported endpoints: v1/chat/completions, v1/responses, v1/messages
| Model | Input | Cached Input | Output | Best fit |
|---|---|---|---|---|
gpt-5.6-sol | $5.00/1M tokens | $0.50/1M tokens | $30.00/1M tokens | Highest-capability reasoning and agentic coding |
gpt-5.6-terra | $2.50/1M tokens | $0.25/1M tokens | $15.00/1M tokens | Balanced production workflows |
gpt-5.6-luna | $1.00/1M tokens | $0.10/1M tokens | $6.00/1M tokens | High-volume, cost-efficient tasks |
xAI Grok 4.5
grok-4.5 is xAI's new flagship for coding, agentic tasks, and knowledge work. It is suitable for software-engineering agents, long-running tool workflows, technical analysis, and Office-style document tasks.
Supported endpoints: v1/chat/completions, v1/responses (partial support)
| Model | Input | Cached Input | Output | Context-aware pricing above 200K |
|---|---|---|---|---|
grok-4.5 | $2.00/1M tokens | $0.50/1M tokens | $6.00/1M tokens | Input $4.00, cached input $1.00, output $12.50 per 1M tokens |
API Request/Response Examples
GPT-5.6 Sol request
bash
curl https://api.avalai.ir/v1/chat/completions \
-H "Content-Type: application/json" \
-H "Authorization: Bearer $AVALAI_API_KEY" \
-d '{
"model": "gpt-5.6-sol",
"messages": [
{
"role": "user",
"content": "Review this migration plan and list the top production risks."
}
]
}'Grok 4.5 request
bash
curl https://api.avalai.ir/v1/chat/completions \
-H "Content-Type: application/json" \
-H "Authorization: Bearer $AVALAI_API_KEY" \
-d '{
"model": "grok-4.5",
"messages": [
{
"role": "user",
"content": "Find and fix the bug, then explain it: function median(a){a.sort();return a[a.length/2]}"
}
]
}'Example response
json
{
"id": "chatcmpl-example",
"created": 1783708400,
"model": "gpt-5.6-sol",
"object": "chat.completion",
"choices": [
{
"finish_reason": "stop",
"index": 0,
"message": {
"role": "assistant",
"content": "Here are the highest-risk assumptions and recommended mitigations..."
}
}
],
"usage": {
"prompt_tokens": 24,
"completion_tokens": 118,
"total_tokens": 142
},
"estimated_cost": {
"unit": "0.0036600000",
"irt": 419.44,
"exchange_rate": 114600
}
}