Claude Opus 5.5 vs GPT-6.1 Sol
GPT-6.1 Sol costs less on both: $0.60 in and $3.00 out per million tokens, against $2.10 in and $6.00 out for Claude Opus 5.5. Both on one key at UplinkSwitch, each next to its developer's list price.
Prices · per million tokens, USD
| Tokens | Claude Opus 5.5claude-opus-5-5 | GPT-6.1 Solgpt-6.1-sol |
|---|---|---|
| Input | $2.10Anthropic lists $4.00 · 47% under | $0.60OpenAI lists $2.00 · 70% under |
| Cached input | $0.12Anthropic lists $0.20 · 40% under | $0.06OpenAI lists $0.10 · 40% under |
| Output | $6.00Anthropic lists $20.00 · 70% under | $3.00OpenAI lists $10.00 · 70% under |
| Context window | 1,000,000 tokens | 1,050,000 tokens |
| Max output | 128,000 tokens | 128,000 tokens |
| Input | text, image | text, image |
| Released | 2026-09-22 | 2026-09-29 |
| Anthropic lifecycle | active, retires no sooner than 2027-09-22 | — |
| Formats | Anthropic SDK, OpenAI SDK | OpenAI SDK |
| Developer | Anthropic | OpenAI |
List price: each developer's published rate, read October 2026. A model with no cached rate bills cached tokens at its input rate. Live from GET https://api.uplinkswitch.com/v1/catalog. Lifecycle from Anthropic's model deprecations, read 2026-10-19.
What the same work costs · USD, here and at list
| Work | Claude Opus 5.5 | GPT-6.1 Sol |
|---|---|---|
| 1,000 chat requests | $7.20list $18.00 | $2.70list $9.00 |
| 100 long documents | $11.70list $24.00 | $3.60list $12.00 |
| A month of both, daily | $567.00list $1,260.00 | $189.00list $630.00 |
A chat request is 2,000 input and 500 output tokens; a long document is 50,000 in and 2,000 out; the month is 1,000 chats and 100 documents a day for 30 days, uncached. Over that month GPT-6.1 Sol costs $378.00 less here.
Same key, same URL
One base URL and one key serve both models. The request below calls Claude Opus 5.5; put gpt-6.1-sol in the model field to call GPT-6.1 Sol instead.
shell
curl https://api.uplinkswitch.com/v1/chat/completions \
-H "authorization: Bearer sk-uplink-live-..." \
-H "content-type: application/json" \
-d '{"model":"claude-opus-5-5","messages":[{"role":"user","content":"Hello"}]}'Model pages: Claude Opus 5.5, GPT-6.1 Sol. Pricing by family: Claude, GPT. More comparisons: Claude Opus 5.5 vs Gemini 3.1 Pro Preview, DeepSeek V4 Pro 0813 vs Claude Opus 5.5, Claude Opus 5.5 vs Claude Sonnet 5.5, Claude Sonnet 5.5 vs GPT-6.1 Sol.
Questions
- Which costs less, Claude Opus 5.5 or GPT-6.1 Sol?
- GPT-6.1 Sol costs less on both: $0.60 in and $3.00 out per million tokens, against $2.10 in and $6.00 out for Claude Opus 5.5.
- Can I switch between them by changing the model id?
- Yes. Both answer in the OpenAI SDK format at the same base URL with the same key. Change the model id from claude-opus-5-5 to gpt-6.1-sol and nothing else.
- Is there a subscription?
- No. Prepaid credit from $10, with no subscription or monthly fee. Each top-up locks your prices for 30 days.
- Is Claude Opus 5.5 better than GPT-6.1 Sol?
- Better depends on the job; this page compares what the catalog can measure. GPT-6.1 Sol costs less on both: $0.60 in and $3.00 out per million tokens, against $2.10 in and $6.00 out for Claude Opus 5.5. Claude Opus 5.5 takes 1,000,000 tokens of context against 1,050,000 for GPT-6.1 Sol. GPT-6.1 Sol is the newer release. Both run on the same key, so the fair test is your own prompt sent to each model id.