Compare

Inworld TTS 2 vs Sonar Deep Research

Pricing per million tokens, context window, capabilities — pulled from each provider's public docs. All 2 are available via the same AIgateway OpenAI-compatible endpoint; flip the model string to switch.

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IT
Inworld TTS 2
inworld/tts-2
Sonar Deep Research
perplexity/sonar-deep-research
Provider
Inworld
Perplexity
Family
Inworld TTS
Modality
audio-tts
text
Context window
127,000 tok
Max output
16,384 tok
Released
2026-05-05
2025-02-14
License
Proprietary
Proprietary
Input price
$2.00 /1M
Output price
$8.00 /1M
Per 1K chars
$0.035 /1K ch
Tools
Streaming
yes
Vision
JSON mode
Reasoning
yes
Prompt caching
Batch API
Try it
Open in playground →
Open in playground →
Inworld TTS 2
inworld/tts-2
Full spec →

Inworld's most powerful and expressive text-to-speech model. Builds on TTS 1.5 with rich expressive speech, real-time latency, natural language steering (e.g. [whisper], [say excitedly]), and stronger multilingual support across 15 production languages plus 90+ experimental languages.

Strengths
  • Natural speech synthesis
Use cases
VoiceoversIVRAudiobooks
Sonar Deep Research
perplexity/sonar-deep-research
Full spec →

Perplexity Sonar Deep Research — long-form web-grounded answers.

Strengths
  • General-purpose chat
  • Long context
  • Tool use
Use cases
ChatbotsContent generationAgentic workflows

Compare with another

GPT-5.5 Pro vs Inworld TTS 2
openai/gpt-5.5-pro · inworld/tts-2
GPT-5.5 Pro vs Sonar Deep Research
openai/gpt-5.5-pro · perplexity/sonar-deep-research
GPT-5.5 vs Inworld TTS 2
openai/gpt-5.5 · inworld/tts-2
GPT-5.5 vs Sonar Deep Research
openai/gpt-5.5 · perplexity/sonar-deep-research
Claude Opus 4.7 vs Inworld TTS 2
anthropic/claude-opus-4.7 · inworld/tts-2
Claude Opus 4.7 vs Sonar Deep Research
anthropic/claude-opus-4.7 · perplexity/sonar-deep-research
Claude Sonnet 4.6 vs Inworld TTS 2
anthropic/claude-sonnet-4.6 · inworld/tts-2
Claude Sonnet 4.6 vs Sonar Deep Research
anthropic/claude-sonnet-4.6 · perplexity/sonar-deep-research
Kimi-K2.6 vs Inworld TTS 2
moonshot/kimi-k2.6 · inworld/tts-2
SWITCH BETWEEN THEM

One key, all 2, one line different.

from openai import OpenAI

client = OpenAI(
    base_url="https://api.aigateway.sh/v1",
    api_key="sk-aig-...",
)

# Inworld TTS 2
client.chat.completions.create(
    model="inworld/tts-2",
    messages=[{"role":"user","content":"hello"}],
)

# Sonar Deep Research
client.chat.completions.create(
    model="perplexity/sonar-deep-research",
    messages=[{"role":"user","content":"hello"}],
)
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