GPT-6.1 Sol pricing
OpenAI · API id gpt-6.1-sol · verified 2026-10-18
| Input | $2.00 |
| Cached input (cache hit) | $0.10 |
| Cache write | $2.50 |
| Output | $10.00 |
| Batch discount | 50% |
| Context window | 1,050,000 tokens |
| Max output | 128,000 tokens |
| Above 272K prompt tokens | $4.00 in / $15.00 out |
USD per 1M tokens unless noted. Official source
Estimate your workload on GPT-6.1 Sol →
What GPT-6.1 Sol costs for real workloads
| Workload | GPT-6.1 Sol | Grok 4.3 | Gemini 3.8 Flash | Gemini 3.6 Flash | Mistral Medium 3.5 |
|---|---|---|---|---|---|
| 10,000 chatbot replies 2,000 input + 400 output tokens each, 50% of the prompt cached | $61.00 | $24.50 | $23.25 | $23.25 | $46.50 |
| One 30-step coding agent run 12K system + tools prompt, 1K output and 3K tool result per step, caching on | $0.83 | $0.64 | $0.36 | $0.36 | $0.72 |
| 1M documents classified (batch) 600 input + 20 output tokens each, batch API where available | $700 | $640 | $263 | $263 | $525 |
Compared with the cheapest other mid models. Change the numbers in the calculator.
Billing notes
Mid tier, near-Astra quality. Cached input is 0.05x (vs 0.1x for gpt-6-sol). Long context: prompts >272K input tokens bill the whole request at 2x input/cache and 1.5x output. Reasoning tokens billed as output. Regional/data-residency endpoints +10%.
Where GPT-6.1 Sol ranks by use case
Position by cost among all models that fit each workload (1 = cheapest).
- Cheapest LLM for coding agents: #23 of 36 (Per run (cached): $0.83)
- Cheapest LLM for RAG chatbots: #24 of 36 (Per 1,000 answers: $13.15)
- Cheapest LLM for batch classification and extraction: #24 of 36 (Classify 1M docs: $700)
- Long-context document analysis (400K tokens): #18 of 29 (10 questions, cached: $3.03)
- Cheapest LLM for high-volume customer support: #24 of 36 (Per 1,000 replies: $5.15)
Counting tokens for a prompt? The token counter estimates GPT-6.1 Sol tokens (OpenAI (o200k_base) tokenizer) and input cost.
Head-to-head comparisons
- Claude Sonnet 5.5 vs GPT-6.1 Sol
- GPT-6.1 Sol vs Gemini 3.8 Flash
- GPT-6.1 Sol vs Grok 4.3
- GPT-6.1 Sol vs GPT-6 Sol
Other OpenAI models
- GPT-6 Astra: $10.00 / $50.00
- GPT-5.5: $5.00 / $30.00
- GPT-5.6 Sol: $4.00 / $20.00
- GPT-6 Sol: $2.00 / $10.00
- GPT-5.6 Terra: $2.00 / $12.00
- GPT-5.4 mini: $0.75 / $4.50
- GPT-5.6 Luna: $0.20 / $1.20
- GPT-6 Luna: $0.10 / $0.50
FAQ
How much does GPT-6.1 Sol cost per 1M tokens?
GPT-6.1 Sol costs $2.00 per 1M input tokens and $10.00 per 1M output tokens at standard rates (verified 2026-10-18).
Does GPT-6.1 Sol support prompt caching?
Yes. Cached input is billed at $0.10 per 1M tokens, and writing to the cache costs $2.50 per 1M tokens.
Is there a batch discount for GPT-6.1 Sol?
Yes. The batch API is 50% cheaper than standard requests.
What is the context window of GPT-6.1 Sol?
1,050,000 tokens, with up to 128,000 output tokens. Prompts over 272,000 tokens are billed at $4.00 input and $15.00 output for the whole request.