Claude Fable 5 vs Claude Opus 4.8
Claude Opus 4.8 costs less on both: $1.50 in and $7.50 out per million tokens, against $3.00 in and $15.00 out for Claude Fable 5. Both on one key at UplinkSwitch, each next to its developer's list price.
Prices · per million tokens, USD
| Tokens | Claude Fable 5claude-fable-5 | Claude Opus 4.8claude-opus-4-8 |
|---|---|---|
| Input | $3.00Anthropic lists $10.00 · 70% under | $1.50Anthropic lists $5.00 · 70% under |
| Cached input | $0.30Anthropic lists $1.00 · 70% under | $0.15Anthropic lists $0.50 · 70% under |
| Output | $15.00Anthropic lists $50.00 · 70% under | $7.50Anthropic lists $25.00 · 70% under |
| Context window | 1,000,000 tokens | 1,000,000 tokens |
| Max output | 128,000 tokens | 128,000 tokens |
| Input | text, image | text, image |
| Released | 2026-06-09 | 2026-05-28 |
| Anthropic lifecycle | active, retires no sooner than 2027-06-09 | active, retires no sooner than 2027-05-28 |
| Formats | Anthropic SDK, OpenAI SDK | Anthropic SDK, OpenAI SDK |
| Developer | Anthropic | Anthropic |
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 Fable 5 | Claude Opus 4.8 |
|---|---|---|
| 1,000 chat requests | $13.50list $45.00 | $6.75list $22.50 |
| 100 long documents | $18.00list $60.00 | $9.00list $30.00 |
| A month of both, daily | $945.00list $3,150.00 | $472.50list $1,575.00 |
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 Claude Opus 4.8 costs $472.50 less here.
Newest in the line
- Claude Opus 5.5 is the newest in Claude Opus 4.8's line: $2.10 in and $6.00 out per million tokens here, against $4.00 and $20.00 at list. Claude Opus 5.5 vs Claude Opus 4.8.
Same key, same URL
One base URL and one key serve both models. The request below calls Claude Fable 5; put claude-opus-4-8 in the model field to call Claude Opus 4.8 instead.
shell
curl https://api.uplinkswitch.com/v1/chat/completions \
-H "authorization: Bearer sk-uplink-live-..." \
-H "content-type: application/json" \
-d '{"model":"claude-fable-5","messages":[{"role":"user","content":"Hello"}]}'Model pages: Claude Fable 5, Claude Opus 4.8. Pricing by family: Claude. More comparisons: Claude Opus 5 vs Claude Fable 5, GPT-5.6 Sol vs Claude Fable 5, Claude Sonnet 5 vs Claude Fable 5, Claude Opus 5.5 vs Claude Opus 4.8.
Questions
- Which costs less, Claude Fable 5 or Claude Opus 4.8?
- Claude Opus 4.8 costs less on both: $1.50 in and $7.50 out per million tokens, against $3.00 in and $15.00 out for Claude Fable 5.
- Can I switch between them by changing the model id?
- Yes. Both answer in the Anthropic SDK and OpenAI SDK format at the same base URL with the same key. Change the model id from claude-fable-5 to claude-opus-4-8 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 Fable 5 better than Claude Opus 4.8?
- Better depends on the job; this page compares what the catalog can measure. Claude Opus 4.8 costs less on both: $1.50 in and $7.50 out per million tokens, against $3.00 in and $15.00 out for Claude Fable 5. Both take 1,000,000 tokens of context. Claude Fable 5 is the newer release. Both run on the same key, so the fair test is your own prompt sent to each model id.