Google: Gemini 2.5 Flash vs OpenAI: GPT-6.1 Sol
Google: Gemini 2.5 Flash is cheaper than OpenAI: GPT-6.1 Sol by about 79% on a blended (75% input / 25% output) basis. Google: Gemini 2.5 Flash charges $0.300000 / $2.500000 per 1M input/output tokens; OpenAI: GPT-6.1 Sol charges $2.000000 / $10.000000.
| Field | Google: Gemini 2.5 Flash | OpenAI: GPT-6.1 Sol |
|---|---|---|
| Input $/Mtok | $0.300000 | $2.000000 |
| Output $/Mtok | $2.500000 | $10.000000 |
| Cache read $/Mtok | $0.030000 | $0.100000 |
| Cache write $/Mtok | – | $2.500000 |
| Input $/Mchar | n/a | 0.563428 |
| Output $/Mchar | n/a | 2.817139 |
| Context window | 1048576 | 1050000 |
| Tokenizer | gemini | o200k |
| Confidence? | official | official |
| Source | official-google | official-openai |
Confidence: official = vendor pricing page · api = OpenRouter per-host · aggregator = community list, may lag · unreviewed = automatic extraction awaiting review. When sources disagree the most authoritative wins. Details: /methodology#confidence
Price history
Same workload, monthly cost
Illustrative monthly cost at 10M tokens/month, split per workload preset. Not a substitute for the calculator, which uses your own volume, cache and batch assumptions.
| Workload | Google: Gemini 2.5 Flash | OpenAI: GPT-6.1 Sol |
|---|---|---|
| Coding agent | $4.10 | $24.00 |
| RAG chat | $6.30 | $32.00 |
| Summarisation (batch) | $5.20 | $28.00 |
| Classification | $3.44 | $21.60 |
| Chat assistant | $11.80 | $52.00 |
| Content generation | $20.60 | $84.00 |
Cite this page
Google: Gemini 2.5 Flash vs OpenAI: GPT-6.1 Sol: $0.300000/$2.500000 vs $2.000000/$10.000000 per 1M tokens as of 2026-10-04. Token Barometer by Dejan Strbad, https://tokenbarometer.com, data CC BY 4.0. https://tokenbarometer.com/compare/google_gemini-2.5-flash-vs-openai_gpt-6.1-sol
Google: Gemini 2.5 Flash page | OpenAI: GPT-6.1 Sol page | Open in calculator