GPT-6.1 Sol Pro vs GPT-6 Astra
Pick up to 3 models · pricing, context and capabilities · simulate your product cost
Data updated on November 14, 2026· 230 models
GPT-6.1 Sol Pro is the same underlying model as GPT-6.1 Sol, served with reasoning.mode set to pro for higher-quality responses on complex tasks.
- Reasoning estimated
- Speed estimated
- Input
- Output
- Context
- 1.1 M tokens
- Max output
- 128 K
- Input, $ per 1M tokens
- ▲$2.00
- Output, $ per 1M tokens
- ▲$10.00
- Cache read, $ per 1M
- $0.100
- Batch (input / output)
- $1.00 / $5.00
- Tool calling
- Yes
- Released
- ▲09/29/2026
- Knowledge cutoff
- —
- API id
- openai/gpt-6.1-sol-pro
GPT-6 Astra is OpenAI's flagship model for demanding end-to-end work.
- Reasoning estimated
- Speed estimated
- Input
- Output
- Context
- 1.1 M tokens
- Max output
- 128 K
- Input, $ per 1M tokens
- $10.00
- Output, $ per 1M tokens
- $50.00
- Cache read, $ per 1M
- $1.000
- Batch (input / output)
- $5.00 / $25.00
- Tool calling
- Yes
- Released
- 09/04/2026
- Knowledge cutoff
- 2026-04-30
- API id
- openai/gpt-6-astra
Which is the better API choice: GPT-6.1 Sol Pro vs GPT-6 Astra?
- GPT-6.1 Sol Pro: cheapest input (80% less than GPT-6 Astra)
- GPT-6.1 Sol Pro: cheapest output
- GPT-6.1 Sol Pro: the newest (09/29/2026)
GPT-6.1 Sol Pro costs 80% less on input and 80% less on output than GPT-6 Astra ($2.00 / $10.00 versus $10.00 / $50.00 per million tokens). All accept 1.1 M tokens of context. GPT-6.1 Sol Pro and GPT-6 Astra offer a batch tier at half price for jobs that do not need an immediate answer.
What would your product cost?
Estimate the monthly cost with your app's real volume. List prices, no cache or batch discounts.
With GPT-6.1 Sol Pro you save $280.00 a month versus GPT-6 Astra (80% less).
The 6 cheapest for this scenario (chat, last 12 months)
- 1Lyria 3 Pro Preview Google$0.00
- 2Lyria 3 Clip Preview Google$0.00
- 3Qwen3.7 Flash Qwen$0.97
- 4DeepSeek V4.1 Flash DeepSeek$1.57
- 5DeepSeek V4 Flash 0731 DeepSeek$1.85
- 6Ministral 3 3B 2512 Mistral$1.90
Paste your prompt: tokens and cost per model
Rough estimate (about 4 characters per token). Nothing is sent to any server.
Cost of sending it 1,000 times (input only)
- 1Claude Haiku 5.5 Anthropic$0.008
- 2GPT-6.1 Sol Pro OpenAI$0.152
- 3Claude Sonnet 5.5 Anthropic$0.152
- 4Claude Opus 5.5 Anthropic$0.304
- 5Claude Opus 5 Anthropic$0.380
- 6Claude Fable 5.2 Anthropic$0.608
- 7GPT-6 Astra OpenAI$0.760
- 8Claude Fable 5.1 Anthropic$0.760
Popular comparisons
- Claude Fable 5.2 vs GPT-6.1 Terra
- Claude Fable 5.2 vs Gemini 4 Hydrogen
- Claude Fable 5.2 vs DeepSeek V4.1 Flash 1017
- Claude Fable 5.2 vs Grok 4.7
- GPT-6.1 Terra vs Gemini 4 Hydrogen
- GPT-6.1 Terra vs DeepSeek V4.1 Flash 1017
- GPT-6.1 Terra vs Grok 4.7
- Gemini 4 Hydrogen vs DeepSeek V4.1 Flash 1017
- Gemini 4 Hydrogen vs Grok 4.7
- DeepSeek V4.1 Flash 1017 vs Grok 4.7
More free tools
See allFrequently asked questions
Which is the better API choice: GPT-6.1 Sol Pro vs GPT-6 Astra?
GPT-6.1 Sol Pro costs 80% less on input and 80% less on output than GPT-6 Astra ($2.00 / $10.00 versus $10.00 / $50.00 per million tokens). All accept 1.1 M tokens of context. GPT-6.1 Sol Pro and GPT-6 Astra offer a batch tier at half price for jobs that do not need an immediate answer.
Which is cheaper: GPT-6.1 Sol Pro and GPT-6 Astra?
GPT-6.1 Sol Pro is cheaper: $2.00 per million input tokens and $10.00 per million output tokens, versus $10.00 / $50.00 for GPT-6 Astra.
Which has more context: GPT-6.1 Sol Pro and GPT-6 Astra?
GPT-6.1 Sol Pro and GPT-6 Astra accept the same context: 1.1 M tokens.
Which is newer: GPT-6.1 Sol Pro and GPT-6 Astra?
GPT-6.1 Sol Pro was released on 09/29/2026; GPT-6 Astra on 09/04/2026.
What would 10,000 requests a month cost with GPT-6.1 Sol Pro and GPT-6 Astra?
With 1,500 input and 400 output tokens per request: GPT-6.1 Sol Pro: $70.00; GPT-6 Astra: $350.00 a month, at list price.
Where do the prices come from and how often are they updated?
From the public catalogs of OpenRouter, models.dev and LiteLLM, which publish each provider's list prices. They sync once a day and the last update date is shown above the comparison.
What does price per million tokens mean?
It is what the provider charges per million tokens you send (input) or the model generates (output). A token is roughly 4 characters. Output almost always costs more than input.
Sources: OpenRouter, models.dev and LiteLLM. Prices in USD per million tokens, list price, no volume discounts. Prompt tokens are an estimate; each provider's tokenizer may differ.