Which is cheaper, Claude Fable 5 and Claude Opus 4.7?

Claude Opus 4.7 has the lowest input price. Per 1M input tokens: Claude Fable 5 from $10.00 and Claude Opus 4.7 from $5.00.

Which is better for coding, Claude Fable 5 and Claude Opus 4.7?

Claude Fable 5 scores highest on the Artificial Analysis Coding Index: Claude Fable 5 76.5 and Claude Opus 4.7 73.6.

Which is faster, Claude Fable 5 and Claude Opus 4.7?

Claude Fable 5 has the highest median throughput on FastRouter: Claude Fable 5 <1 t/s and Claude Opus 4.7 <1 t/s.

Can I switch between Claude Fable 5 and Claude Opus 4.7 without changing my code?

Yes. All of them are served through FastRouter's OpenAI-compatible API, so switching is a change of the model parameter (anthropic/claude-fable-5, anthropic/claude-opus-4.7).

Claude Fable 5 vs Claude Opus 4.7

Side-by-side pricing per provider, context window, benchmark scores and speed, all on one OpenAI-compatible API.

Claude Fable 5 Anthropicanthropic/claude-fable-5

Claude Opus 4.7 Anthropicanthropic/claude-opus-4.7

Creator

Anthropic

Released

Jun 9, 2026

Apr 16, 2026

Context window

Max output

128K

Input / 1MLowest provider price

$10.00

$5.00

Output / 1MLowest provider price

$50.00

$25.00

Providers

IntelligenceArtificial Analysis index

49.6

40.7

CodingArtificial Analysis index

76.5

73.6

LatencyMedian time to first token

14s

4.5s

ThroughputMedian tokens per second

<1 t/s

Accepts

Text, Image, Files

Text, Image

Produces

Text

Tool calling

Yes

Structured output

Yes

Reasoning

Yes

Claude Fable 5 vs Claude Opus 4.7: summary

Claude Fable 5 and Claude Opus 4.7 are both available through FastRouter's OpenAI-compatible API, so switching between them is a change of model id, not a new integration.

Claude Fable 5, from Anthropic, has a 1,000,000-token context window, costs $10.00/1M input and $50.00/1M output tokens and scores 49.6 on the Artificial Analysis Intelligence Index.

Claude Opus 4.7, from Anthropic, has a 1,000,000-token context window, costs from $5.00/1M input and $25.00/1M output tokens across 3 providers and scores 40.7 on the Artificial Analysis Intelligence Index.

Claude Opus 4.7 is the cheapest on input, 2× cheaper than the next model, Claude Fable 5 scores highest for intelligence, Claude Fable 5 leads on coding and Claude Fable 5 has the highest throughput.

Switch with one line

client = OpenAI(base_url="https://api.fastrouter.ai/api/v1", api_key="<FASTROUTER_API_KEY>") client.chat.completions.create(model="anthropic/claude-fable-5", messages=[...]) # or client.chat.completions.create(model="anthropic/claude-opus-4.7", messages=[...])

Full API docs

Frequently asked questions

More comparisons

Benchmark scores sourced from ArtificialAnalysis